./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-17 07:55:25,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-17 07:55:25,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-17 07:55:25,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-17 07:55:25,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-17 07:55:25,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-17 07:55:25,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-17 07:55:25,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-17 07:55:25,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-17 07:55:25,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-17 07:55:25,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-17 07:55:25,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-17 07:55:25,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-17 07:55:25,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-17 07:55:25,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-17 07:55:25,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-17 07:55:25,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-17 07:55:25,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-17 07:55:25,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-17 07:55:25,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-17 07:55:25,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-17 07:55:25,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-17 07:55:25,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-17 07:55:25,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-17 07:55:25,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-17 07:55:25,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-17 07:55:25,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-17 07:55:25,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-17 07:55:26,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-17 07:55:26,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-17 07:55:26,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-17 07:55:26,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-17 07:55:26,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-17 07:55:26,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-17 07:55:26,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-17 07:55:26,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-17 07:55:26,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-17 07:55:26,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-17 07:55:26,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-17 07:55:26,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-17 07:55:26,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-17 07:55:26,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-17 07:55:26,048 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-17 07:55:26,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-17 07:55:26,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-17 07:55:26,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-17 07:55:26,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-17 07:55:26,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-17 07:55:26,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-17 07:55:26,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-17 07:55:26,058 INFO L138 SettingsManager]: * Use SBE=true [2021-11-17 07:55:26,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-17 07:55:26,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-17 07:55:26,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-17 07:55:26,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-17 07:55:26,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-17 07:55:26,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-17 07:55:26,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-17 07:55:26,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-17 07:55:26,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-17 07:55:26,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-17 07:55:26,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-17 07:55:26,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-17 07:55:26,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 07:55:26,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-17 07:55:26,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-17 07:55:26,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-17 07:55:26,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-17 07:55:26,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-17 07:55:26,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-17 07:55:26,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-17 07:55:26,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-17 07:55:26,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-17 07:55:26,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb6aba39a63540626ae26255eab93a5f2c0864f87ba11cb320579066e7aefd2 [2021-11-17 07:55:26,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-17 07:55:26,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-17 07:55:26,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-17 07:55:26,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-17 07:55:26,349 INFO L275 PluginConnector]: CDTParser initialized [2021-11-17 07:55:26,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-17 07:55:26,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d09e0732/1f25bef7d3c34a4c8a26107b17d9e7e0/FLAGf036680c0 [2021-11-17 07:55:27,205 INFO L306 CDTParser]: Found 1 translation units. [2021-11-17 07:55:27,206 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-17 07:55:27,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d09e0732/1f25bef7d3c34a4c8a26107b17d9e7e0/FLAGf036680c0 [2021-11-17 07:55:27,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d09e0732/1f25bef7d3c34a4c8a26107b17d9e7e0 [2021-11-17 07:55:27,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-17 07:55:27,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-17 07:55:27,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-17 07:55:27,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-17 07:55:27,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-17 07:55:27,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:27" (1/1) ... [2021-11-17 07:55:27,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8091a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:27, skipping insertion in model container [2021-11-17 07:55:27,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:55:27" (1/1) ... [2021-11-17 07:55:27,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-17 07:55:27,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-17 07:55:29,961 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2021-11-17 07:55:29,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2021-11-17 07:55:29,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2021-11-17 07:55:29,972 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2021-11-17 07:55:29,998 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 07:55:30,037 INFO L203 MainTranslator]: Completed pre-run [2021-11-17 07:55:30,337 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305216,305229] [2021-11-17 07:55:30,338 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305385,305398] [2021-11-17 07:55:30,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305552,305565] [2021-11-17 07:55:30,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i[305720,305733] [2021-11-17 07:55:30,345 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-17 07:55:30,487 INFO L208 MainTranslator]: Completed translation [2021-11-17 07:55:30,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30 WrapperNode [2021-11-17 07:55:30,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-17 07:55:30,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-17 07:55:30,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-17 07:55:30,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-17 07:55:30,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,761 INFO L137 Inliner]: procedures = 411, calls = 1991, calls flagged for inlining = 210, calls inlined = 187, statements flattened = 4403 [2021-11-17 07:55:30,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-17 07:55:30,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-17 07:55:30,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-17 07:55:30,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-17 07:55:30,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-17 07:55:30,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-17 07:55:30,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-17 07:55:30,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-17 07:55:30,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (1/1) ... [2021-11-17 07:55:30,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-17 07:55:30,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-17 07:55:31,013 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) [2021-11-17 07:55:31,036 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 [2021-11-17 07:55:31,056 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_probe [2021-11-17 07:55:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_probe [2021-11-17 07:55:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-17 07:55:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-17 07:55:31,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-17 07:55:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-17 07:55:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-17 07:55:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-17 07:55:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-17 07:55:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-17 07:55:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-17 07:55:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-17 07:55:31,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-17 07:55:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-17 07:55:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure __dnet_set_hwaddr [2021-11-17 07:55:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __dnet_set_hwaddr [2021-11-17 07:55:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-17 07:55:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-17 07:55:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-17 07:55:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-17 07:55:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-17 07:55:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-17 07:55:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-17 07:55:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-17 07:55:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-17 07:55:31,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-17 07:55:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-17 07:55:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-17 07:55:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-17 07:55:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-17 07:55:31,061 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-17 07:55:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-17 07:55:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-17 07:55:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-17 07:55:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-17 07:55:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-17 07:55:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-17 07:55:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-17 07:55:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-17 07:55:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-17 07:55:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_reset_hw [2021-11-17 07:55:31,063 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_reset_hw [2021-11-17 07:55:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-17 07:55:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-17 07:55:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-17 07:55:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-17 07:55:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-17 07:55:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-17 07:55:31,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-17 07:55:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-17 07:55:31,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-17 07:55:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-17 07:55:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-17 07:55:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-17 07:55:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-17 07:55:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-17 07:55:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-17 07:55:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-17 07:55:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-17 07:55:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 07:55:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-17 07:55:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-17 07:55:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-17 07:55:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-17 07:55:31,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-17 07:55:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-17 07:55:31,069 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-17 07:55:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-17 07:55:31,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-17 07:55:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-17 07:55:31,070 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-17 07:55:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-17 07:55:31,070 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-17 07:55:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-17 07:55:31,070 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-17 07:55:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-17 07:55:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-17 07:55:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-17 07:55:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-17 07:55:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-17 07:55:31,071 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-17 07:55:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-17 07:55:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-17 07:55:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-17 07:55:31,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-17 07:55:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-17 07:55:31,073 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-17 07:55:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-17 07:55:31,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-17 07:55:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_dnet [2021-11-17 07:55:31,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_dnet [2021-11-17 07:55:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-17 07:55:31,074 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-17 07:55:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_readw_mac [2021-11-17 07:55:31,074 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_readw_mac [2021-11-17 07:55:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-17 07:55:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-17 07:55:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-17 07:55:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-17 07:55:31,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-17 07:55:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-17 07:55:31,075 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-17 07:55:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-17 07:55:31,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-17 07:55:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-17 07:55:31,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-17 07:55:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_close [2021-11-17 07:55:31,076 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_close [2021-11-17 07:55:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2021-11-17 07:55:31,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2021-11-17 07:55:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_handle_link_change [2021-11-17 07:55:31,077 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_handle_link_change [2021-11-17 07:55:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-17 07:55:31,080 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-17 07:55:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-17 07:55:31,081 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-17 07:55:31,081 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_writew_mac [2021-11-17 07:55:31,082 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_writew_mac [2021-11-17 07:55:31,082 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-17 07:55:31,082 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-17 07:55:31,082 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-17 07:55:31,083 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-17 07:55:31,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-17 07:55:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-17 07:55:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-17 07:55:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_remove [2021-11-17 07:55:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_remove [2021-11-17 07:55:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-17 07:55:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-17 07:55:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure dnet_open [2021-11-17 07:55:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dnet_open [2021-11-17 07:55:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure phy_connect [2021-11-17 07:55:31,086 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_connect [2021-11-17 07:55:31,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-17 07:55:31,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-17 07:55:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-17 07:55:31,119 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-17 07:55:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-17 07:55:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-17 07:55:31,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-17 07:55:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-17 07:55:31,120 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-17 07:55:31,748 INFO L236 CfgBuilder]: Building ICFG [2021-11-17 07:55:31,752 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-17 07:55:32,412 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-17 07:55:37,282 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-17 07:55:37,333 INFO L277 CfgBuilder]: Performing block encoding [2021-11-17 07:55:37,346 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-17 07:55:37,346 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-17 07:55:37,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 07:55:37 BoogieIcfgContainer [2021-11-17 07:55:37,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-17 07:55:37,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-17 07:55:37,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-17 07:55:37,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-17 07:55:37,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:55:27" (1/3) ... [2021-11-17 07:55:37,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aebc928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:37, skipping insertion in model container [2021-11-17 07:55:37,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:55:30" (2/3) ... [2021-11-17 07:55:37,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aebc928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:55:37, skipping insertion in model container [2021-11-17 07:55:37,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 07:55:37" (3/3) ... [2021-11-17 07:55:37,356 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-dnet.cil.i [2021-11-17 07:55:37,360 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-17 07:55:37,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-17 07:55:37,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-17 07:55:37,409 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 [2021-11-17 07:55:37,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-17 07:55:37,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 1366 states, 977 states have (on average 1.2620266120777892) internal successors, (1233), 990 states have internal predecessors, (1233), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) [2021-11-17 07:55:37,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-17 07:55:37,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:55:37,468 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:55:37,469 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)] === [2021-11-17 07:55:37,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:55:37,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1829789727, now seen corresponding path program 1 times [2021-11-17 07:55:37,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:55:37,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18137980] [2021-11-17 07:55:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:55:37,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:55:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:37,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:55:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:37,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:55:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:55:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:55:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:55:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:55:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:55:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:55:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:55:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:55:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:55:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-11-17 07:55:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:38,265 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-17 07:55:38,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:55:38,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18137980] [2021-11-17 07:55:38,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18137980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:55:38,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:55:38,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:55:38,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380280102] [2021-11-17 07:55:38,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:55:38,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:55:38,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:55:38,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:55:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:55:38,299 INFO L87 Difference]: Start difference. First operand has 1366 states, 977 states have (on average 1.2620266120777892) internal successors, (1233), 990 states have internal predecessors, (1233), 324 states have call successors, (324), 63 states have call predecessors, (324), 62 states have return successors, (317), 315 states have call predecessors, (317), 317 states have call successors, (317) Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:55:40,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:41,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:44,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:55:46,719 INFO L93 Difference]: Finished difference Result 3992 states and 5626 transitions. [2021-11-17 07:55:46,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:55:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 134 [2021-11-17 07:55:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:55:46,752 INFO L225 Difference]: With dead ends: 3992 [2021-11-17 07:55:46,753 INFO L226 Difference]: Without dead ends: 2639 [2021-11-17 07:55:46,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:55:46,765 INFO L933 BasicCegarLoop]: 2018 mSDtfsCounter, 2134 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 830 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-17 07:55:46,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2421 Valid, 4334 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1052 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-11-17 07:55:46,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-11-17 07:55:46,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2611. [2021-11-17 07:55:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 1888 states have (on average 1.257415254237288) internal successors, (2374), 1912 states have internal predecessors, (2374), 599 states have call successors, (599), 122 states have call predecessors, (599), 121 states have return successors, (596), 592 states have call predecessors, (596), 596 states have call successors, (596) [2021-11-17 07:55:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3569 transitions. [2021-11-17 07:55:46,950 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3569 transitions. Word has length 134 [2021-11-17 07:55:46,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:55:46,951 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3569 transitions. [2021-11-17 07:55:46,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:55:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3569 transitions. [2021-11-17 07:55:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-17 07:55:46,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:55:46,957 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:55:46,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-17 07:55:46,958 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-17 07:55:46,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:55:46,958 INFO L85 PathProgramCache]: Analyzing trace with hash 493076079, now seen corresponding path program 1 times [2021-11-17 07:55:46,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:55:46,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091290259] [2021-11-17 07:55:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:55:46,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:55:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:55:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:55:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:55:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:55:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:55:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:55:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:55:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:55:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:55:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:55:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:55:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-17 07:55:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-17 07:55:47,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:55:47,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091290259] [2021-11-17 07:55:47,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091290259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:55:47,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:55:47,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:55:47,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950537592] [2021-11-17 07:55:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:55:47,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:55:47,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:55:47,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:55:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:55:47,377 INFO L87 Difference]: Start difference. First operand 2611 states and 3569 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:55:49,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:52,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:55,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:55:56,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:55:56,470 INFO L93 Difference]: Finished difference Result 7633 states and 10625 transitions. [2021-11-17 07:55:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:55:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 138 [2021-11-17 07:55:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:55:56,507 INFO L225 Difference]: With dead ends: 7633 [2021-11-17 07:55:56,508 INFO L226 Difference]: Without dead ends: 5047 [2021-11-17 07:55:56,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:55:56,522 INFO L933 BasicCegarLoop]: 2157 mSDtfsCounter, 2038 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 842 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 842 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-17 07:55:56,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2276 Valid, 4596 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [842 Valid, 1037 Invalid, 3 Unknown, 0 Unchecked, 8.8s Time] [2021-11-17 07:55:56,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2021-11-17 07:55:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 4992. [2021-11-17 07:55:56,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4992 states, 3630 states have (on average 1.2575757575757576) internal successors, (4565), 3684 states have internal predecessors, (4565), 1114 states have call successors, (1114), 242 states have call predecessors, (1114), 245 states have return successors, (1303), 1095 states have call predecessors, (1303), 1111 states have call successors, (1303) [2021-11-17 07:55:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 6982 transitions. [2021-11-17 07:55:56,772 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 6982 transitions. Word has length 138 [2021-11-17 07:55:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:55:56,775 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 6982 transitions. [2021-11-17 07:55:56,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:55:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 6982 transitions. [2021-11-17 07:55:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-17 07:55:56,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:55:56,784 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:55:56,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-17 07:55:56,785 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-17 07:55:56,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:55:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1667436356, now seen corresponding path program 1 times [2021-11-17 07:55:56,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:55:56,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268257240] [2021-11-17 07:55:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:55:56,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:55:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:55:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:55:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:55:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:55:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:55:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:55:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:55:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:57,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:55:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:55:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:55:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:55:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:55:57,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-11-17 07:55:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:55:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-17 07:55:57,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:55:57,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268257240] [2021-11-17 07:55:57,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268257240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:55:57,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:55:57,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:55:57,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093584025] [2021-11-17 07:55:57,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:55:57,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:55:57,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:55:57,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:55:57,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:55:57,111 INFO L87 Difference]: Start difference. First operand 4992 states and 6982 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:56:00,008 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:02,915 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:05,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:06,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:06,619 INFO L93 Difference]: Finished difference Result 14132 states and 19680 transitions. [2021-11-17 07:56:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:56:06,620 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 145 [2021-11-17 07:56:06,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:06,677 INFO L225 Difference]: With dead ends: 14132 [2021-11-17 07:56:06,677 INFO L226 Difference]: Without dead ends: 9165 [2021-11-17 07:56:06,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:56:06,704 INFO L933 BasicCegarLoop]: 2075 mSDtfsCounter, 1718 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 799 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 4257 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:06,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 4257 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 1162 Invalid, 3 Unknown, 0 Unchecked, 9.3s Time] [2021-11-17 07:56:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9165 states. [2021-11-17 07:56:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9165 to 9086. [2021-11-17 07:56:07,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 6558 states have (on average 1.2447392497712717) internal successors, (8163), 6670 states have internal predecessors, (8163), 2052 states have call successors, (2052), 470 states have call predecessors, (2052), 473 states have return successors, (2249), 2005 states have call predecessors, (2249), 2049 states have call successors, (2249) [2021-11-17 07:56:07,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 12464 transitions. [2021-11-17 07:56:07,131 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 12464 transitions. Word has length 145 [2021-11-17 07:56:07,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:07,132 INFO L470 AbstractCegarLoop]: Abstraction has 9086 states and 12464 transitions. [2021-11-17 07:56:07,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:56:07,133 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 12464 transitions. [2021-11-17 07:56:07,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-17 07:56:07,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:07,137 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:56:07,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-17 07:56:07,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-17 07:56:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash -656611999, now seen corresponding path program 1 times [2021-11-17 07:56:07,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:07,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835944678] [2021-11-17 07:56:07,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:07,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:56:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:56:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-17 07:56:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-11-17 07:56:07,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:07,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835944678] [2021-11-17 07:56:07,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835944678] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:07,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:07,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:56:07,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720606323] [2021-11-17 07:56:07,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:07,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:56:07,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:07,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:56:07,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:56:07,432 INFO L87 Difference]: Start difference. First operand 9086 states and 12464 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:56:11,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:12,804 INFO L93 Difference]: Finished difference Result 24640 states and 34066 transitions. [2021-11-17 07:56:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:56:12,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 153 [2021-11-17 07:56:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:12,905 INFO L225 Difference]: With dead ends: 24640 [2021-11-17 07:56:12,905 INFO L226 Difference]: Without dead ends: 15579 [2021-11-17 07:56:12,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:56:12,946 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 1757 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 832 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 4227 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:12,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1958 Valid, 4227 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [832 Valid, 1034 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-17 07:56:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15579 states. [2021-11-17 07:56:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15579 to 15452. [2021-11-17 07:56:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15452 states, 11066 states have (on average 1.2343213446593169) internal successors, (13659), 11278 states have internal predecessors, (13659), 3492 states have call successors, (3492), 896 states have call predecessors, (3492), 891 states have return successors, (4189), 3369 states have call predecessors, (4189), 3489 states have call successors, (4189) [2021-11-17 07:56:13,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15452 states to 15452 states and 21340 transitions. [2021-11-17 07:56:13,670 INFO L78 Accepts]: Start accepts. Automaton has 15452 states and 21340 transitions. Word has length 153 [2021-11-17 07:56:13,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:13,671 INFO L470 AbstractCegarLoop]: Abstraction has 15452 states and 21340 transitions. [2021-11-17 07:56:13,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-11-17 07:56:13,671 INFO L276 IsEmpty]: Start isEmpty. Operand 15452 states and 21340 transitions. [2021-11-17 07:56:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-17 07:56:13,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:13,674 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:56:13,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-17 07:56:13,675 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-17 07:56:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:13,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2109483455, now seen corresponding path program 1 times [2021-11-17 07:56:13,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:13,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160050808] [2021-11-17 07:56:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:13,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:56:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:56:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:14,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-17 07:56:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:14,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-11-17 07:56:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-11-17 07:56:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-11-17 07:56:14,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:14,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160050808] [2021-11-17 07:56:14,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160050808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:14,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:14,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:56:14,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019734722] [2021-11-17 07:56:14,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:14,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:56:14,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:14,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:56:14,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:56:14,032 INFO L87 Difference]: Start difference. First operand 15452 states and 21340 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-17 07:56:18,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:20,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:21,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:21,390 INFO L93 Difference]: Finished difference Result 29258 states and 40524 transitions. [2021-11-17 07:56:21,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:56:21,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 169 [2021-11-17 07:56:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:21,454 INFO L225 Difference]: With dead ends: 29258 [2021-11-17 07:56:21,454 INFO L226 Difference]: Without dead ends: 13831 [2021-11-17 07:56:21,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:56:21,506 INFO L933 BasicCegarLoop]: 2983 mSDtfsCounter, 1751 mSDsluCounter, 2738 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 647 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2027 SdHoareTripleChecker+Valid, 5721 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:21,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2027 Valid, 5721 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 1120 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-11-17 07:56:21,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13831 states. [2021-11-17 07:56:21,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13831 to 13739. [2021-11-17 07:56:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13739 states, 9943 states have (on average 1.2314190888061953) internal successors, (12244), 10141 states have internal predecessors, (12244), 3002 states have call successors, (3002), 793 states have call predecessors, (3002), 791 states have return successors, (3671), 2886 states have call predecessors, (3671), 2999 states have call successors, (3671) [2021-11-17 07:56:22,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13739 states to 13739 states and 18917 transitions. [2021-11-17 07:56:22,096 INFO L78 Accepts]: Start accepts. Automaton has 13739 states and 18917 transitions. Word has length 169 [2021-11-17 07:56:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:22,097 INFO L470 AbstractCegarLoop]: Abstraction has 13739 states and 18917 transitions. [2021-11-17 07:56:22,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-17 07:56:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 13739 states and 18917 transitions. [2021-11-17 07:56:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-17 07:56:22,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:22,103 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:56:22,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-17 07:56:22,103 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)] === [2021-11-17 07:56:22,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:22,104 INFO L85 PathProgramCache]: Analyzing trace with hash -844179788, now seen corresponding path program 1 times [2021-11-17 07:56:22,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:22,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44612417] [2021-11-17 07:56:22,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:22,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:56:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:56:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:56:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:56:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:56:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:56:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:56:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:56:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:56:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-11-17 07:56:22,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:22,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44612417] [2021-11-17 07:56:22,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44612417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:22,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:22,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:56:22,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754565245] [2021-11-17 07:56:22,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:22,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:56:22,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:56:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:56:22,628 INFO L87 Difference]: Start difference. First operand 13739 states and 18917 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-17 07:56:23,678 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:25,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:29,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:29,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:29,708 INFO L93 Difference]: Finished difference Result 40460 states and 55934 transitions. [2021-11-17 07:56:29,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:56:29,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 186 [2021-11-17 07:56:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:29,858 INFO L225 Difference]: With dead ends: 40460 [2021-11-17 07:56:29,858 INFO L226 Difference]: Without dead ends: 26815 [2021-11-17 07:56:29,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:56:29,921 INFO L933 BasicCegarLoop]: 2073 mSDtfsCounter, 2103 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 844 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2385 SdHoareTripleChecker+Valid, 4422 SdHoareTripleChecker+Invalid, 1894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 844 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:29,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2385 Valid, 4422 Invalid, 1894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [844 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-11-17 07:56:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26815 states. [2021-11-17 07:56:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26815 to 26673. [2021-11-17 07:56:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26673 states, 19350 states have (on average 1.23343669250646) internal successors, (23867), 19704 states have internal predecessors, (23867), 5787 states have call successors, (5787), 1536 states have call predecessors, (5787), 1533 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-11-17 07:56:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26673 states to 26673 states and 36782 transitions. [2021-11-17 07:56:31,063 INFO L78 Accepts]: Start accepts. Automaton has 26673 states and 36782 transitions. Word has length 186 [2021-11-17 07:56:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:31,064 INFO L470 AbstractCegarLoop]: Abstraction has 26673 states and 36782 transitions. [2021-11-17 07:56:31,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-17 07:56:31,064 INFO L276 IsEmpty]: Start isEmpty. Operand 26673 states and 36782 transitions. [2021-11-17 07:56:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-17 07:56:31,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:31,067 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:56:31,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-17 07:56:31,067 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)] === [2021-11-17 07:56:31,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:31,068 INFO L85 PathProgramCache]: Analyzing trace with hash -421477962, now seen corresponding path program 1 times [2021-11-17 07:56:31,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:31,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569068860] [2021-11-17 07:56:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:31,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:56:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:56:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:56:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:56:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:56:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:56:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:56:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:56:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:56:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-17 07:56:31,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:31,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569068860] [2021-11-17 07:56:31,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569068860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:31,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:31,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:56:31,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144968851] [2021-11-17 07:56:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:31,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:56:31,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:56:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:56:31,656 INFO L87 Difference]: Start difference. First operand 26673 states and 36782 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 07:56:36,307 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:36,774 INFO L93 Difference]: Finished difference Result 26799 states and 37085 transitions. [2021-11-17 07:56:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:56:36,777 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 186 [2021-11-17 07:56:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:36,900 INFO L225 Difference]: With dead ends: 26799 [2021-11-17 07:56:36,901 INFO L226 Difference]: Without dead ends: 26797 [2021-11-17 07:56:36,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:56:36,927 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 1812 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 567 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:36,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 5466 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-17 07:56:36,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26797 states. [2021-11-17 07:56:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26797 to 26677. [2021-11-17 07:56:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26677 states, 19353 states have (on average 1.2334005063814395) internal successors, (23870), 19707 states have internal predecessors, (23870), 5787 states have call successors, (5787), 1537 states have call predecessors, (5787), 1534 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-11-17 07:56:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26677 states to 26677 states and 36785 transitions. [2021-11-17 07:56:38,037 INFO L78 Accepts]: Start accepts. Automaton has 26677 states and 36785 transitions. Word has length 186 [2021-11-17 07:56:38,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:38,041 INFO L470 AbstractCegarLoop]: Abstraction has 26677 states and 36785 transitions. [2021-11-17 07:56:38,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (21), 4 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-17 07:56:38,041 INFO L276 IsEmpty]: Start isEmpty. Operand 26677 states and 36785 transitions. [2021-11-17 07:56:38,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-17 07:56:38,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:38,044 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:56:38,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-17 07:56:38,044 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)] === [2021-11-17 07:56:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2049601018, now seen corresponding path program 1 times [2021-11-17 07:56:38,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:38,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488679499] [2021-11-17 07:56:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:38,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:38,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:56:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:56:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:56:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:56:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:56:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:56:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:56:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:56:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:56:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:56:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:38,703 INFO L134 CoverageAnalysis]: Checked inductivity of 575 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 573 trivial. 0 not checked. [2021-11-17 07:56:38,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:38,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488679499] [2021-11-17 07:56:38,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488679499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:38,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:38,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:56:38,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625283996] [2021-11-17 07:56:38,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:38,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:56:38,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:38,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:56:38,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:56:38,707 INFO L87 Difference]: Start difference. First operand 26677 states and 36785 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 07:56:40,737 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:44,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:45,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:45,119 INFO L93 Difference]: Finished difference Result 26803 states and 37088 transitions. [2021-11-17 07:56:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:56:45,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 191 [2021-11-17 07:56:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:45,246 INFO L225 Difference]: With dead ends: 26803 [2021-11-17 07:56:45,247 INFO L226 Difference]: Without dead ends: 26801 [2021-11-17 07:56:45,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:56:45,272 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1804 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 566 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:45,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5469 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 1172 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-17 07:56:45,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26801 states. [2021-11-17 07:56:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26801 to 26681. [2021-11-17 07:56:46,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26681 states, 19356 states have (on average 1.2333643314734448) internal successors, (23873), 19710 states have internal predecessors, (23873), 5787 states have call successors, (5787), 1538 states have call predecessors, (5787), 1535 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-11-17 07:56:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26681 states to 26681 states and 36788 transitions. [2021-11-17 07:56:46,297 INFO L78 Accepts]: Start accepts. Automaton has 26681 states and 36788 transitions. Word has length 191 [2021-11-17 07:56:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:46,298 INFO L470 AbstractCegarLoop]: Abstraction has 26681 states and 36788 transitions. [2021-11-17 07:56:46,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (22), 4 states have call predecessors, (22), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-17 07:56:46,298 INFO L276 IsEmpty]: Start isEmpty. Operand 26681 states and 36788 transitions. [2021-11-17 07:56:46,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-17 07:56:46,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:46,301 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:56:46,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-17 07:56:46,302 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)] === [2021-11-17 07:56:46,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash -2110594058, now seen corresponding path program 1 times [2021-11-17 07:56:46,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:46,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921740847] [2021-11-17 07:56:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:46,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:56:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:56:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:56:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:56:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:56:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:56:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:56:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:56:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:56:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:56:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:56:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:46,831 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-17 07:56:46,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:46,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921740847] [2021-11-17 07:56:46,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921740847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:46,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:46,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:56:46,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375100554] [2021-11-17 07:56:46,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:46,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:56:46,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:46,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:56:46,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:56:46,835 INFO L87 Difference]: Start difference. First operand 26681 states and 36788 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 07:56:51,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:51,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:51,533 INFO L93 Difference]: Finished difference Result 26807 states and 37091 transitions. [2021-11-17 07:56:51,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:56:51,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 196 [2021-11-17 07:56:51,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:51,720 INFO L225 Difference]: With dead ends: 26807 [2021-11-17 07:56:51,721 INFO L226 Difference]: Without dead ends: 26805 [2021-11-17 07:56:51,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:56:51,739 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1804 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 565 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:51,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5469 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-17 07:56:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26805 states. [2021-11-17 07:56:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26805 to 26685. [2021-11-17 07:56:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26685 states, 19359 states have (on average 1.2333281677772612) internal successors, (23876), 19713 states have internal predecessors, (23876), 5787 states have call successors, (5787), 1539 states have call predecessors, (5787), 1536 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-11-17 07:56:52,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26685 states to 26685 states and 36791 transitions. [2021-11-17 07:56:52,775 INFO L78 Accepts]: Start accepts. Automaton has 26685 states and 36791 transitions. Word has length 196 [2021-11-17 07:56:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:56:52,776 INFO L470 AbstractCegarLoop]: Abstraction has 26685 states and 36791 transitions. [2021-11-17 07:56:52,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-17 07:56:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 26685 states and 36791 transitions. [2021-11-17 07:56:52,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-17 07:56:52,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:56:52,781 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:56:52,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-17 07:56:52,782 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)] === [2021-11-17 07:56:52,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:56:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1806834886, now seen corresponding path program 1 times [2021-11-17 07:56:52,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:56:52,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405265675] [2021-11-17 07:56:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:56:52,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:56:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:56:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:56:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:56:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:56:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:56:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:56:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:56:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:56:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:56:53,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:56:53,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:56:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:56:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:56:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:56:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:56:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:56:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:56:53,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:56:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:56:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:56:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:56:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 07:56:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:56:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2021-11-17 07:56:53,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:56:53,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405265675] [2021-11-17 07:56:53,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405265675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:56:53,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:56:53,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:56:53,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90538229] [2021-11-17 07:56:53,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:56:53,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:56:53,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:56:53,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:56:53,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:56:53,195 INFO L87 Difference]: Start difference. First operand 26685 states and 36791 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 07:56:55,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:58,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:56:58,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:56:58,970 INFO L93 Difference]: Finished difference Result 26811 states and 37094 transitions. [2021-11-17 07:56:58,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:56:58,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 201 [2021-11-17 07:56:58,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:56:59,076 INFO L225 Difference]: With dead ends: 26811 [2021-11-17 07:56:59,076 INFO L226 Difference]: Without dead ends: 26809 [2021-11-17 07:56:59,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:56:59,094 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1804 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 564 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-17 07:56:59,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5469 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-17 07:56:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26809 states. [2021-11-17 07:56:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26809 to 26689. [2021-11-17 07:56:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26689 states, 19362 states have (on average 1.233292015287677) internal successors, (23879), 19716 states have internal predecessors, (23879), 5787 states have call successors, (5787), 1540 states have call predecessors, (5787), 1537 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-11-17 07:57:00,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26689 states to 26689 states and 36794 transitions. [2021-11-17 07:57:00,050 INFO L78 Accepts]: Start accepts. Automaton has 26689 states and 36794 transitions. Word has length 201 [2021-11-17 07:57:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:00,050 INFO L470 AbstractCegarLoop]: Abstraction has 26689 states and 36794 transitions. [2021-11-17 07:57:00,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-17 07:57:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 26689 states and 36794 transitions. [2021-11-17 07:57:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-17 07:57:00,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:00,055 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:57:00,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-17 07:57:00,055 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)] === [2021-11-17 07:57:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:00,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1516299830, now seen corresponding path program 1 times [2021-11-17 07:57:00,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:00,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930067295] [2021-11-17 07:57:00,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:00,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:57:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:57:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:57:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:57:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:57:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:57:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 07:57:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-17 07:57:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2021-11-17 07:57:00,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:00,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930067295] [2021-11-17 07:57:00,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930067295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:00,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:00,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:00,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563856886] [2021-11-17 07:57:00,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:00,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:00,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:00,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:00,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:00,440 INFO L87 Difference]: Start difference. First operand 26689 states and 36794 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 07:57:01,703 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:05,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:05,481 INFO L93 Difference]: Finished difference Result 26815 states and 37097 transitions. [2021-11-17 07:57:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:57:05,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 206 [2021-11-17 07:57:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:05,586 INFO L225 Difference]: With dead ends: 26815 [2021-11-17 07:57:05,586 INFO L226 Difference]: Without dead ends: 26813 [2021-11-17 07:57:05,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:05,611 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1804 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:05,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5469 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-17 07:57:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26813 states. [2021-11-17 07:57:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26813 to 26693. [2021-11-17 07:57:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26693 states, 19365 states have (on average 1.2332558739994837) internal successors, (23882), 19719 states have internal predecessors, (23882), 5787 states have call successors, (5787), 1541 states have call predecessors, (5787), 1538 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-11-17 07:57:06,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26693 states to 26693 states and 36797 transitions. [2021-11-17 07:57:06,591 INFO L78 Accepts]: Start accepts. Automaton has 26693 states and 36797 transitions. Word has length 206 [2021-11-17 07:57:06,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:06,591 INFO L470 AbstractCegarLoop]: Abstraction has 26693 states and 36797 transitions. [2021-11-17 07:57:06,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (25), 4 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-17 07:57:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 26693 states and 36797 transitions. [2021-11-17 07:57:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-17 07:57:06,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:06,595 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:57:06,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-17 07:57:06,596 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)] === [2021-11-17 07:57:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2147387270, now seen corresponding path program 1 times [2021-11-17 07:57:06,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:06,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104819317] [2021-11-17 07:57:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:06,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:57:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:57:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:57:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:57:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:57:06,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:57:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 07:57:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-17 07:57:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-17 07:57:06,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-11-17 07:57:06,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:06,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104819317] [2021-11-17 07:57:06,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104819317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:06,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:06,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:06,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904907720] [2021-11-17 07:57:06,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:06,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:06,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:06,959 INFO L87 Difference]: Start difference. First operand 26693 states and 36797 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 07:57:11,316 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:11,924 INFO L93 Difference]: Finished difference Result 26819 states and 37100 transitions. [2021-11-17 07:57:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:57:11,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 211 [2021-11-17 07:57:11,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:12,008 INFO L225 Difference]: With dead ends: 26819 [2021-11-17 07:57:12,008 INFO L226 Difference]: Without dead ends: 26817 [2021-11-17 07:57:12,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:12,022 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1804 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 562 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:12,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5469 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-17 07:57:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26817 states. [2021-11-17 07:57:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26817 to 26697. [2021-11-17 07:57:12,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26697 states, 19368 states have (on average 1.2332197439074764) internal successors, (23885), 19722 states have internal predecessors, (23885), 5787 states have call successors, (5787), 1542 states have call predecessors, (5787), 1539 states have return successors, (7128), 5596 states have call predecessors, (7128), 5784 states have call successors, (7128) [2021-11-17 07:57:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26697 states to 26697 states and 36800 transitions. [2021-11-17 07:57:12,856 INFO L78 Accepts]: Start accepts. Automaton has 26697 states and 36800 transitions. Word has length 211 [2021-11-17 07:57:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:12,857 INFO L470 AbstractCegarLoop]: Abstraction has 26697 states and 36800 transitions. [2021-11-17 07:57:12,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-17 07:57:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 26697 states and 36800 transitions. [2021-11-17 07:57:12,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-17 07:57:12,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:12,861 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:57:12,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-17 07:57:12,862 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)] === [2021-11-17 07:57:12,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1980942454, now seen corresponding path program 1 times [2021-11-17 07:57:12,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:12,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424517512] [2021-11-17 07:57:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:12,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:57:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:57:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:57:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:57:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:57:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:57:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 07:57:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-17 07:57:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-17 07:57:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 07:57:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 645 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 633 trivial. 0 not checked. [2021-11-17 07:57:13,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:13,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424517512] [2021-11-17 07:57:13,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424517512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:13,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:13,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:13,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851834330] [2021-11-17 07:57:13,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:13,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:13,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:13,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:13,227 INFO L87 Difference]: Start difference. First operand 26697 states and 36800 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-17 07:57:14,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:18,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:18,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:18,809 INFO L93 Difference]: Finished difference Result 28019 states and 38247 transitions. [2021-11-17 07:57:18,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-17 07:57:18,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 216 [2021-11-17 07:57:18,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:18,917 INFO L225 Difference]: With dead ends: 28019 [2021-11-17 07:57:18,917 INFO L226 Difference]: Without dead ends: 28017 [2021-11-17 07:57:18,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:18,941 INFO L933 BasicCegarLoop]: 1769 mSDtfsCounter, 1675 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 550 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 5665 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:18,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 5665 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 1338 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-17 07:57:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28017 states. [2021-11-17 07:57:19,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28017 to 27897. [2021-11-17 07:57:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27897 states, 20107 states have (on average 1.2258417466553937) internal successors, (24648), 20485 states have internal predecessors, (24648), 5979 states have call successors, (5979), 1811 states have call predecessors, (5979), 1808 states have return successors, (7320), 5788 states have call predecessors, (7320), 5976 states have call successors, (7320) [2021-11-17 07:57:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27897 states to 27897 states and 37947 transitions. [2021-11-17 07:57:20,017 INFO L78 Accepts]: Start accepts. Automaton has 27897 states and 37947 transitions. Word has length 216 [2021-11-17 07:57:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:20,017 INFO L470 AbstractCegarLoop]: Abstraction has 27897 states and 37947 transitions. [2021-11-17 07:57:20,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-17 07:57:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 27897 states and 37947 transitions. [2021-11-17 07:57:20,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-17 07:57:20,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:20,022 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:57:20,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-17 07:57:20,022 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)] === [2021-11-17 07:57:20,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash 530394554, now seen corresponding path program 1 times [2021-11-17 07:57:20,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:20,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536958838] [2021-11-17 07:57:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:20,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:57:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:57:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:57:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:57:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:57:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:57:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 07:57:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-17 07:57:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-17 07:57:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 07:57:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 07:57:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2021-11-17 07:57:20,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:20,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536958838] [2021-11-17 07:57:20,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536958838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:20,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:20,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:20,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609232152] [2021-11-17 07:57:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:20,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:20,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:20,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:20,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:20,402 INFO L87 Difference]: Start difference. First operand 27897 states and 37947 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 07:57:22,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:26,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:26,696 INFO L93 Difference]: Finished difference Result 28023 states and 38250 transitions. [2021-11-17 07:57:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:57:26,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 221 [2021-11-17 07:57:26,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:26,782 INFO L225 Difference]: With dead ends: 28023 [2021-11-17 07:57:26,782 INFO L226 Difference]: Without dead ends: 28021 [2021-11-17 07:57:26,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:26,796 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1804 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 560 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:26,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5469 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 1172 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2021-11-17 07:57:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28021 states. [2021-11-17 07:57:27,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28021 to 27901. [2021-11-17 07:57:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27901 states, 20110 states have (on average 1.2258080556936848) internal successors, (24651), 20488 states have internal predecessors, (24651), 5979 states have call successors, (5979), 1812 states have call predecessors, (5979), 1809 states have return successors, (7320), 5788 states have call predecessors, (7320), 5976 states have call successors, (7320) [2021-11-17 07:57:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27901 states to 27901 states and 37950 transitions. [2021-11-17 07:57:27,717 INFO L78 Accepts]: Start accepts. Automaton has 27901 states and 37950 transitions. Word has length 221 [2021-11-17 07:57:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:27,718 INFO L470 AbstractCegarLoop]: Abstraction has 27901 states and 37950 transitions. [2021-11-17 07:57:27,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-17 07:57:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 27901 states and 37950 transitions. [2021-11-17 07:57:27,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-17 07:57:27,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:27,723 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:57:27,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-17 07:57:27,723 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)] === [2021-11-17 07:57:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1443853642, now seen corresponding path program 1 times [2021-11-17 07:57:27,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:27,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372772437] [2021-11-17 07:57:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:27,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:27,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:27,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:57:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:57:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:57:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-11-17 07:57:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-17 07:57:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:57:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-11-17 07:57:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-17 07:57:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-11-17 07:57:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-17 07:57:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-11-17 07:57:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 07:57:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 685 trivial. 0 not checked. [2021-11-17 07:57:28,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:28,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372772437] [2021-11-17 07:57:28,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372772437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:28,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:28,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:28,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282713765] [2021-11-17 07:57:28,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:28,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:28,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:28,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:28,105 INFO L87 Difference]: Start difference. First operand 27901 states and 37950 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 07:57:31,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:32,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:32,327 INFO L93 Difference]: Finished difference Result 28027 states and 38253 transitions. [2021-11-17 07:57:32,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:57:32,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 226 [2021-11-17 07:57:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:32,439 INFO L225 Difference]: With dead ends: 28027 [2021-11-17 07:57:32,439 INFO L226 Difference]: Without dead ends: 28025 [2021-11-17 07:57:32,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:32,461 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1804 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 559 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:32,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 5469 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-17 07:57:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28025 states. [2021-11-17 07:57:33,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28025 to 27905. [2021-11-17 07:57:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27905 states, 20113 states have (on average 1.225774374782479) internal successors, (24654), 20491 states have internal predecessors, (24654), 5979 states have call successors, (5979), 1813 states have call predecessors, (5979), 1810 states have return successors, (7320), 5788 states have call predecessors, (7320), 5976 states have call successors, (7320) [2021-11-17 07:57:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27905 states to 27905 states and 37953 transitions. [2021-11-17 07:57:33,488 INFO L78 Accepts]: Start accepts. Automaton has 27905 states and 37953 transitions. Word has length 226 [2021-11-17 07:57:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:33,489 INFO L470 AbstractCegarLoop]: Abstraction has 27905 states and 37953 transitions. [2021-11-17 07:57:33,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 4 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-17 07:57:33,489 INFO L276 IsEmpty]: Start isEmpty. Operand 27905 states and 37953 transitions. [2021-11-17 07:57:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-17 07:57:33,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:33,494 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 10, 10, 10, 10, 10, 10, 10, 9, 9, 6, 6, 6, 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] [2021-11-17 07:57:33,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-17 07:57:33,495 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)] === [2021-11-17 07:57:33,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:33,495 INFO L85 PathProgramCache]: Analyzing trace with hash 2046317439, now seen corresponding path program 1 times [2021-11-17 07:57:33,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:33,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736683539] [2021-11-17 07:57:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:33,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:33,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:57:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:57:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:57:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 07:57:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:33,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 07:57:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:57:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-17 07:57:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-11-17 07:57:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 07:57:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-17 07:57:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-17 07:57:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-17 07:57:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-17 07:57:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-17 07:57:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 07:57:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 752 trivial. 0 not checked. [2021-11-17 07:57:34,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:34,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736683539] [2021-11-17 07:57:34,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736683539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:34,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:34,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:34,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844537963] [2021-11-17 07:57:34,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:34,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:34,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:34,068 INFO L87 Difference]: Start difference. First operand 27905 states and 37953 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 07:57:37,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:38,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:38,633 INFO L93 Difference]: Finished difference Result 28031 states and 38256 transitions. [2021-11-17 07:57:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:57:38,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 249 [2021-11-17 07:57:38,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:38,755 INFO L225 Difference]: With dead ends: 28031 [2021-11-17 07:57:38,756 INFO L226 Difference]: Without dead ends: 28029 [2021-11-17 07:57:38,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:38,776 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1795 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 558 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:38,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1996 Valid, 5469 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-17 07:57:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28029 states. [2021-11-17 07:57:39,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28029 to 27909. [2021-11-17 07:57:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27909 states, 20116 states have (on average 1.2257407039172799) internal successors, (24657), 20494 states have internal predecessors, (24657), 5979 states have call successors, (5979), 1814 states have call predecessors, (5979), 1811 states have return successors, (7320), 5788 states have call predecessors, (7320), 5976 states have call successors, (7320) [2021-11-17 07:57:39,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27909 states to 27909 states and 37956 transitions. [2021-11-17 07:57:39,856 INFO L78 Accepts]: Start accepts. Automaton has 27909 states and 37956 transitions. Word has length 249 [2021-11-17 07:57:39,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:39,857 INFO L470 AbstractCegarLoop]: Abstraction has 27909 states and 37956 transitions. [2021-11-17 07:57:39,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (32), 4 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-17 07:57:39,857 INFO L276 IsEmpty]: Start isEmpty. Operand 27909 states and 37956 transitions. [2021-11-17 07:57:39,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-17 07:57:39,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:39,861 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 10, 10, 10, 10, 10, 10, 5, 5, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:57:39,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-17 07:57:39,862 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)] === [2021-11-17 07:57:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:39,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1209759793, now seen corresponding path program 1 times [2021-11-17 07:57:39,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:39,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858623209] [2021-11-17 07:57:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:39,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:39,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:39,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:39,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:40,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:57:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:57:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 07:57:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 07:57:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-11-17 07:57:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-11-17 07:57:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-11-17 07:57:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:40,132 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2021-11-17 07:57:40,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:40,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858623209] [2021-11-17 07:57:40,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858623209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:40,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:40,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:57:40,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773482264] [2021-11-17 07:57:40,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:40,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:57:40,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:57:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:57:40,146 INFO L87 Difference]: Start difference. First operand 27909 states and 37956 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-17 07:57:42,181 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:44,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:47,422 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:49,761 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:50,593 INFO L93 Difference]: Finished difference Result 67550 states and 92249 transitions. [2021-11-17 07:57:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:57:50,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 229 [2021-11-17 07:57:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:50,757 INFO L225 Difference]: With dead ends: 67550 [2021-11-17 07:57:50,757 INFO L226 Difference]: Without dead ends: 39735 [2021-11-17 07:57:51,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:57:51,080 INFO L933 BasicCegarLoop]: 3323 mSDtfsCounter, 1714 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 596 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 6325 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:51,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1989 Valid, 6325 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 1125 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2021-11-17 07:57:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39735 states. [2021-11-17 07:57:52,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39735 to 39503. [2021-11-17 07:57:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39503 states, 28586 states have (on average 1.2262995872105227) internal successors, (35055), 29114 states have internal predecessors, (35055), 8361 states have call successors, (8361), 2554 states have call predecessors, (8361), 2553 states have return successors, (10346), 8102 states have call predecessors, (10346), 8358 states have call successors, (10346) [2021-11-17 07:57:52,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39503 states to 39503 states and 53762 transitions. [2021-11-17 07:57:52,524 INFO L78 Accepts]: Start accepts. Automaton has 39503 states and 53762 transitions. Word has length 229 [2021-11-17 07:57:52,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:57:52,525 INFO L470 AbstractCegarLoop]: Abstraction has 39503 states and 53762 transitions. [2021-11-17 07:57:52,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-17 07:57:52,525 INFO L276 IsEmpty]: Start isEmpty. Operand 39503 states and 53762 transitions. [2021-11-17 07:57:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-11-17 07:57:52,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:57:52,528 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 11, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 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] [2021-11-17 07:57:52,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-17 07:57:52,528 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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)] === [2021-11-17 07:57:52,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:57:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash 69822353, now seen corresponding path program 1 times [2021-11-17 07:57:52,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:57:52,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731541527] [2021-11-17 07:57:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:57:52,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:57:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:57:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:57:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:57:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:57:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:57:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:57:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:57:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:57:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:57:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:57:52,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:57:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:57:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:57:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:57:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:57:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:57:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:57:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:57:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 07:57:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 07:57:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:57:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-17 07:57:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-11-17 07:57:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 07:57:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-17 07:57:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-17 07:57:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-17 07:57:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-17 07:57:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-17 07:57:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 07:57:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 07:57:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:57:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2021-11-17 07:57:52,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:57:52,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731541527] [2021-11-17 07:57:52,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731541527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:57:52,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:57:52,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:57:52,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060077639] [2021-11-17 07:57:52,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:57:52,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:57:52,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:57:52,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:57:52,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:57:52,944 INFO L87 Difference]: Start difference. First operand 39503 states and 53762 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-17 07:57:58,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:57:58,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:57:58,739 INFO L93 Difference]: Finished difference Result 39669 states and 54161 transitions. [2021-11-17 07:57:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:57:58,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 254 [2021-11-17 07:57:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:57:58,882 INFO L225 Difference]: With dead ends: 39669 [2021-11-17 07:57:58,882 INFO L226 Difference]: Without dead ends: 39665 [2021-11-17 07:57:58,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:57:58,907 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 1795 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 557 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1996 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-17 07:57:58,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1996 Valid, 5469 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 1173 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-17 07:57:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39665 states. [2021-11-17 07:58:00,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39665 to 39505. [2021-11-17 07:58:00,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39505 states, 28588 states have (on average 1.2262487757100882) internal successors, (35056), 29115 states have internal predecessors, (35056), 8361 states have call successors, (8361), 2555 states have call predecessors, (8361), 2553 states have return successors, (10346), 8102 states have call predecessors, (10346), 8358 states have call successors, (10346) [2021-11-17 07:58:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39505 states to 39505 states and 53763 transitions. [2021-11-17 07:58:00,577 INFO L78 Accepts]: Start accepts. Automaton has 39505 states and 53763 transitions. Word has length 254 [2021-11-17 07:58:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:58:00,578 INFO L470 AbstractCegarLoop]: Abstraction has 39505 states and 53763 transitions. [2021-11-17 07:58:00,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (33), 4 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-17 07:58:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 39505 states and 53763 transitions. [2021-11-17 07:58:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2021-11-17 07:58:00,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:58:00,580 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 11, 11, 10, 10, 10, 10, 10, 10, 6, 6, 6, 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] [2021-11-17 07:58:00,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-17 07:58:00,580 INFO L402 AbstractCegarLoop]: === Iteration 19 === 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)] === [2021-11-17 07:58:00,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:58:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1884890751, now seen corresponding path program 1 times [2021-11-17 07:58:00,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:58:00,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075125909] [2021-11-17 07:58:00,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:58:00,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:58:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:58:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:58:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:58:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:58:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:58:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:58:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:58:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:58:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:58:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:58:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:58:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:58:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:58:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:58:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-11-17 07:58:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-17 07:58:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-17 07:58:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 07:58:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-11-17 07:58:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-11-17 07:58:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-11-17 07:58:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-11-17 07:58:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-11-17 07:58:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-11-17 07:58:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-17 07:58:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-11-17 07:58:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-11-17 07:58:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-17 07:58:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-17 07:58:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-17 07:58:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-17 07:58:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-17 07:58:00,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:58:00,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075125909] [2021-11-17 07:58:00,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075125909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:58:00,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:58:00,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-17 07:58:00,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298675114] [2021-11-17 07:58:00,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:58:00,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-17 07:58:00,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:58:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-17 07:58:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-17 07:58:00,957 INFO L87 Difference]: Start difference. First operand 39505 states and 53763 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-17 07:58:05,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:58:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:58:06,528 INFO L93 Difference]: Finished difference Result 39665 states and 54157 transitions. [2021-11-17 07:58:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:58:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 259 [2021-11-17 07:58:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:58:06,653 INFO L225 Difference]: With dead ends: 39665 [2021-11-17 07:58:06,653 INFO L226 Difference]: Without dead ends: 39318 [2021-11-17 07:58:06,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-17 07:58:06,677 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 1789 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 556 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 5466 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-17 07:58:06,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1990 Valid, 5466 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [556 Valid, 1168 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-17 07:58:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39318 states. [2021-11-17 07:58:08,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39318 to 39158. [2021-11-17 07:58:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39158 states, 28370 states have (on average 1.225026436376454) internal successors, (34754), 28849 states have internal predecessors, (34754), 8247 states have call successors, (8247), 2539 states have call predecessors, (8247), 2539 states have return successors, (10235), 8037 states have call predecessors, (10235), 8247 states have call successors, (10235) [2021-11-17 07:58:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39158 states to 39158 states and 53236 transitions. [2021-11-17 07:58:08,470 INFO L78 Accepts]: Start accepts. Automaton has 39158 states and 53236 transitions. Word has length 259 [2021-11-17 07:58:08,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:58:08,470 INFO L470 AbstractCegarLoop]: Abstraction has 39158 states and 53236 transitions. [2021-11-17 07:58:08,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (34), 4 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-17 07:58:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 39158 states and 53236 transitions. [2021-11-17 07:58:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-17 07:58:08,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:58:08,474 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 10, 10, 10, 10, 10, 10, 7, 7, 7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:58:08,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-17 07:58:08,474 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)] === [2021-11-17 07:58:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:58:08,475 INFO L85 PathProgramCache]: Analyzing trace with hash 213365508, now seen corresponding path program 1 times [2021-11-17 07:58:08,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:58:08,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696911701] [2021-11-17 07:58:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:58:08,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:58:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:58:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:58:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:58:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:58:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:58:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:58:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:58:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:58:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:58:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:58:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:58:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:58:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:58:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:58:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:58:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:58:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 07:58:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 07:58:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 07:58:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 07:58:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 07:58:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 07:58:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-17 07:58:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-17 07:58:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-17 07:58:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-17 07:58:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2021-11-17 07:58:08,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:58:08,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696911701] [2021-11-17 07:58:08,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696911701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:58:08,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:58:08,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:58:08,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529568949] [2021-11-17 07:58:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:58:08,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:58:08,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:58:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:58:08,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:58:08,767 INFO L87 Difference]: Start difference. First operand 39158 states and 53236 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 07:58:10,084 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:58:14,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:58:17,045 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:58:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:58:18,204 INFO L93 Difference]: Finished difference Result 89841 states and 122524 transitions. [2021-11-17 07:58:18,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:58:18,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 278 [2021-11-17 07:58:18,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:58:18,401 INFO L225 Difference]: With dead ends: 89841 [2021-11-17 07:58:18,401 INFO L226 Difference]: Without dead ends: 50706 [2021-11-17 07:58:18,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:58:18,484 INFO L933 BasicCegarLoop]: 3292 mSDtfsCounter, 1692 mSDsluCounter, 2974 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 521 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 6266 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-17 07:58:18,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1953 Valid, 6266 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 1069 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-11-17 07:58:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50706 states. [2021-11-17 07:58:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50706 to 50494. [2021-11-17 07:58:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50494 states, 36653 states have (on average 1.2257659673150902) internal successors, (44928), 37266 states have internal predecessors, (44928), 10570 states have call successors, (10570), 3267 states have call predecessors, (10570), 3269 states have return successors, (13202), 10308 states have call predecessors, (13202), 10570 states have call successors, (13202) [2021-11-17 07:58:20,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50494 states to 50494 states and 68700 transitions. [2021-11-17 07:58:20,594 INFO L78 Accepts]: Start accepts. Automaton has 50494 states and 68700 transitions. Word has length 278 [2021-11-17 07:58:20,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:58:20,595 INFO L470 AbstractCegarLoop]: Abstraction has 50494 states and 68700 transitions. [2021-11-17 07:58:20,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 07:58:20,596 INFO L276 IsEmpty]: Start isEmpty. Operand 50494 states and 68700 transitions. [2021-11-17 07:58:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2021-11-17 07:58:20,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:58:20,600 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 10, 10, 10, 10, 10, 10, 7, 7, 7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-17 07:58:20,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-17 07:58:20,601 INFO L402 AbstractCegarLoop]: === Iteration 21 === 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)] === [2021-11-17 07:58:20,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:58:20,601 INFO L85 PathProgramCache]: Analyzing trace with hash 254040258, now seen corresponding path program 1 times [2021-11-17 07:58:20,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:58:20,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366135537] [2021-11-17 07:58:20,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:58:20,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:58:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:58:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:58:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:58:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:58:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:58:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:58:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:58:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:58:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:58:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:58:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:58:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:58:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:58:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:58:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:58:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:58:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 07:58:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 07:58:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 07:58:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 07:58:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 07:58:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 07:58:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-17 07:58:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-11-17 07:58:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-17 07:58:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-11-17 07:58:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2021-11-17 07:58:20,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:58:20,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366135537] [2021-11-17 07:58:20,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366135537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:58:20,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:58:20,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-17 07:58:20,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056558368] [2021-11-17 07:58:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:58:20,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-17 07:58:20,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:58:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-17 07:58:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-17 07:58:20,910 INFO L87 Difference]: Start difference. First operand 50494 states and 68700 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 07:58:22,854 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:58:27,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:58:29,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:58:29,620 INFO L93 Difference]: Finished difference Result 113454 states and 154576 transitions. [2021-11-17 07:58:29,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-17 07:58:29,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 278 [2021-11-17 07:58:29,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-17 07:58:30,096 INFO L225 Difference]: With dead ends: 113454 [2021-11-17 07:58:30,096 INFO L226 Difference]: Without dead ends: 63054 [2021-11-17 07:58:30,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:58:30,219 INFO L933 BasicCegarLoop]: 3032 mSDtfsCounter, 1733 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 1069 mSolverCounterSat, 579 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 5818 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 579 IncrementalHoareTripleChecker+Valid, 1069 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-17 07:58:30,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 5818 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [579 Valid, 1069 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-11-17 07:58:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63054 states. [2021-11-17 07:58:32,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63054 to 62802. [2021-11-17 07:58:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62802 states, 45571 states have (on average 1.22406793794299) internal successors, (55782), 46342 states have internal predecessors, (55782), 13086 states have call successors, (13086), 4145 states have call predecessors, (13086), 4143 states have return successors, (16362), 12758 states have call predecessors, (16362), 13086 states have call successors, (16362) [2021-11-17 07:58:33,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62802 states to 62802 states and 85230 transitions. [2021-11-17 07:58:33,036 INFO L78 Accepts]: Start accepts. Automaton has 62802 states and 85230 transitions. Word has length 278 [2021-11-17 07:58:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-17 07:58:33,037 INFO L470 AbstractCegarLoop]: Abstraction has 62802 states and 85230 transitions. [2021-11-17 07:58:33,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-17 07:58:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 62802 states and 85230 transitions. [2021-11-17 07:58:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-17 07:58:33,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-17 07:58:33,043 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 11, 11, 11, 11, 11, 11, 9, 9, 9, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-17 07:58:33,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-17 07:58:33,044 INFO L402 AbstractCegarLoop]: === Iteration 22 === 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)] === [2021-11-17 07:58:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-17 07:58:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash -201325183, now seen corresponding path program 1 times [2021-11-17 07:58:33,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-17 07:58:33,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842580260] [2021-11-17 07:58:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-17 07:58:33,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-17 07:58:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-17 07:58:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-17 07:58:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-11-17 07:58:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-17 07:58:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-17 07:58:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-17 07:58:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-17 07:58:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-17 07:58:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-17 07:58:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-17 07:58:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-17 07:58:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-11-17 07:58:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-11-17 07:58:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-17 07:58:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-17 07:58:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-11-17 07:58:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-17 07:58:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-11-17 07:58:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-11-17 07:58:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-17 07:58:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-17 07:58:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-17 07:58:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-11-17 07:58:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-17 07:58:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-17 07:58:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-11-17 07:58:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-17 07:58:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-11-17 07:58:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-11-17 07:58:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-11-17 07:58:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-11-17 07:58:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-11-17 07:58:33,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-17 07:58:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-17 07:58:33,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-17 07:58:33,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842580260] [2021-11-17 07:58:33,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842580260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-17 07:58:33,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-17 07:58:33,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-17 07:58:33,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40214151] [2021-11-17 07:58:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-17 07:58:33,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-17 07:58:33,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-17 07:58:33,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-17 07:58:33,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-17 07:58:33,506 INFO L87 Difference]: Start difference. First operand 62802 states and 85230 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-17 07:58:41,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-17 07:58:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-17 07:58:43,158 INFO L93 Difference]: Finished difference Result 138964 states and 189440 transitions. [2021-11-17 07:58:43,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-17 07:58:43,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (37), 4 states have call predecessors, (37), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 344 [2021-11-17 07:58:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.