./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.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 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 03:46:34,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 03:46:34,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 03:46:34,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 03:46:34,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 03:46:34,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 03:46:34,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 03:46:34,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 03:46:34,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 03:46:34,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 03:46:34,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 03:46:34,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 03:46:34,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 03:46:34,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 03:46:34,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 03:46:34,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 03:46:34,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 03:46:34,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 03:46:34,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 03:46:34,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 03:46:34,983 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 03:46:34,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 03:46:34,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 03:46:34,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 03:46:34,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 03:46:34,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 03:46:34,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 03:46:34,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 03:46:34,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 03:46:34,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 03:46:34,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 03:46:34,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 03:46:34,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 03:46:34,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 03:46:34,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 03:46:35,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 03:46:35,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 03:46:35,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 03:46:35,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 03:46:35,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 03:46:35,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 03:46:35,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 03:46:35,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 03:46:35,032 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 03:46:35,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 03:46:35,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 03:46:35,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 03:46:35,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 03:46:35,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 03:46:35,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 03:46:35,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 03:46:35,034 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 03:46:35,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 03:46:35,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 03:46:35,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 03:46:35,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 03:46:35,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 03:46:35,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 03:46:35,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 03:46:35,036 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 03:46:35,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 03:46:35,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 03:46:35,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 03:46:35,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 03:46:35,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 03:46:35,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 03:46:35,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 03:46:35,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 03:46:35,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 03:46:35,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 03:46:35,039 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 03:46:35,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 03:46:35,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 03:46:35,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-07-20 03:46:35,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 03:46:35,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 03:46:35,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 03:46:35,268 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 03:46:35,268 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 03:46:35,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-07-20 03:46:35,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f0916a1/b50a0c3f3b7f415d83c1deff03165039/FLAGa614e0981 [2022-07-20 03:46:36,120 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 03:46:36,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-07-20 03:46:36,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f0916a1/b50a0c3f3b7f415d83c1deff03165039/FLAGa614e0981 [2022-07-20 03:46:36,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79f0916a1/b50a0c3f3b7f415d83c1deff03165039 [2022-07-20 03:46:36,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 03:46:36,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 03:46:36,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 03:46:36,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 03:46:36,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 03:46:36,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:46:36" (1/1) ... [2022-07-20 03:46:36,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4985637f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:36, skipping insertion in model container [2022-07-20 03:46:36,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:46:36" (1/1) ... [2022-07-20 03:46:36,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 03:46:36,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 03:46:40,154 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-07-20 03:46:40,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-07-20 03:46:40,161 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-07-20 03:46:40,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-07-20 03:46:40,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 03:46:40,234 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 03:46:40,650 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-07-20 03:46:40,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-07-20 03:46:40,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-07-20 03:46:40,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-07-20 03:46:40,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 03:46:41,027 INFO L208 MainTranslator]: Completed translation [2022-07-20 03:46:41,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:41 WrapperNode [2022-07-20 03:46:41,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 03:46:41,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 03:46:41,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 03:46:41,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 03:46:41,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:41" (1/1) ... [2022-07-20 03:46:41,146 ERROR L1136 TypeChecker]: C: lp->phy[lp->active].spd.value [10596]: Undeclared identifier #t~mem1644 in IdentifierExpression[#t~mem1644,] [2022-07-20 03:46:41,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:41" (1/1) ... [2022-07-20 03:46:41,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 03:46:41,176 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2022-07-20 03:46:41,177 INFO L158 Benchmark]: Toolchain (without parser) took 4568.90ms. Allocated memory was 98.6MB in the beginning and 270.5MB in the end (delta: 172.0MB). Free memory was 62.2MB in the beginning and 118.8MB in the end (delta: -56.6MB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. [2022-07-20 03:46:41,178 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 03:46:41,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4417.94ms. Allocated memory was 98.6MB in the beginning and 270.5MB in the end (delta: 172.0MB). Free memory was 62.0MB in the beginning and 128.2MB in the end (delta: -66.3MB). Peak memory consumption was 108.3MB. Max. memory is 16.1GB. [2022-07-20 03:46:41,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 146.65ms. Allocated memory is still 270.5MB. Free memory was 128.2MB in the beginning and 118.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-20 03:46:41,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 98.6MB. Free memory is still 78.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4417.94ms. Allocated memory was 98.6MB in the beginning and 270.5MB in the end (delta: 172.0MB). Free memory was 62.0MB in the beginning and 128.2MB in the end (delta: -66.3MB). Peak memory consumption was 108.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 146.65ms. Allocated memory is still 270.5MB. Free memory was 128.2MB in the beginning and 118.8MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - TypeErrorResult [Line: 10596]: Type Error Undeclared identifier #t~mem1644 in IdentifierExpression[#t~mem1644,] RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 03:46:42,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 03:46:42,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 03:46:42,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 03:46:42,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 03:46:42,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 03:46:42,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 03:46:42,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 03:46:42,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 03:46:42,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 03:46:42,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 03:46:42,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 03:46:42,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 03:46:42,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 03:46:42,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 03:46:42,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 03:46:42,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 03:46:42,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 03:46:42,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 03:46:42,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 03:46:42,864 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 03:46:42,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 03:46:42,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 03:46:42,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 03:46:42,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 03:46:42,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 03:46:42,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 03:46:42,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 03:46:42,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 03:46:42,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 03:46:42,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 03:46:42,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 03:46:42,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 03:46:42,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 03:46:42,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 03:46:42,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 03:46:42,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 03:46:42,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 03:46:42,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 03:46:42,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 03:46:42,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 03:46:42,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 03:46:42,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 03:46:42,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 03:46:42,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 03:46:42,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 03:46:42,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 03:46:42,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 03:46:42,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 03:46:42,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 03:46:42,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 03:46:42,925 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 03:46:42,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 03:46:42,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 03:46:42,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 03:46:42,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 03:46:42,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 03:46:42,926 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 03:46:42,927 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 03:46:42,927 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 03:46:42,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 03:46:42,927 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 03:46:42,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 03:46:42,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 03:46:42,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 03:46:42,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 03:46:42,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 03:46:42,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 03:46:42,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 03:46:42,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 03:46:42,929 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 03:46:42,929 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 03:46:42,929 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 03:46:42,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 03:46:42,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 03:46:42,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 03:46:42,930 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 527ba95af45b5d863cb3ca1867267fd54ac6958329e64d7162c5caa88bde96c3 [2022-07-20 03:46:43,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 03:46:43,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 03:46:43,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 03:46:43,241 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 03:46:43,242 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 03:46:43,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-07-20 03:46:43,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92981200f/5947e32347b84e0c950f7bc0aedea03f/FLAG98e74582d [2022-07-20 03:46:44,218 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 03:46:44,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-07-20 03:46:44,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92981200f/5947e32347b84e0c950f7bc0aedea03f/FLAG98e74582d [2022-07-20 03:46:44,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92981200f/5947e32347b84e0c950f7bc0aedea03f [2022-07-20 03:46:44,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 03:46:44,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 03:46:44,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 03:46:44,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 03:46:44,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 03:46:44,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:46:44" (1/1) ... [2022-07-20 03:46:44,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15e55f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:44, skipping insertion in model container [2022-07-20 03:46:44,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:46:44" (1/1) ... [2022-07-20 03:46:44,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 03:46:44,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 03:46:47,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-07-20 03:46:48,001 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-07-20 03:46:48,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-07-20 03:46:48,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-07-20 03:46:48,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 03:46:48,067 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 03:46:48,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 03:46:48,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-07-20 03:46:48,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-07-20 03:46:48,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-07-20 03:46:48,550 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-07-20 03:46:48,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 03:46:48,585 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 03:46:49,053 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470813,470826] [2022-07-20 03:46:49,054 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[470982,470995] [2022-07-20 03:46:49,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471149,471162] [2022-07-20 03:46:49,055 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i[471317,471330] [2022-07-20 03:46:49,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 03:46:49,299 INFO L208 MainTranslator]: Completed translation [2022-07-20 03:46:49,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49 WrapperNode [2022-07-20 03:46:49,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 03:46:49,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 03:46:49,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 03:46:49,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 03:46:49,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,600 INFO L137 Inliner]: procedures = 540, calls = 4106, calls flagged for inlining = 232, calls inlined = 215, statements flattened = 8209 [2022-07-20 03:46:49,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 03:46:49,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 03:46:49,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 03:46:49,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 03:46:49,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:49,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:50,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 03:46:50,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 03:46:50,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 03:46:50,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 03:46:50,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (1/1) ... [2022-07-20 03:46:50,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 03:46:50,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 03:46:50,047 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) [2022-07-20 03:46:50,061 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 [2022-07-20 03:46:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure disable_ast [2022-07-20 03:46:50,089 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_ast [2022-07-20 03:46:50,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 03:46:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 03:46:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-20 03:46:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-20 03:46:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 03:46:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 03:46:50,090 INFO L130 BoogieDeclarations]: Found specification of procedure type4_infoblock [2022-07-20 03:46:50,090 INFO L138 BoogieDeclarations]: Found implementation of procedure type4_infoblock [2022-07-20 03:46:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_put_cache [2022-07-20 03:46:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_put_cache [2022-07-20 03:46:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2022-07-20 03:46:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2022-07-20 03:46:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_de4x5_private [2022-07-20 03:46:50,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_de4x5_private [2022-07-20 03:46:50,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-20 03:46:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-20 03:46:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-07-20 03:46:50,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_de4x5_private [2022-07-20 03:46:50,092 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_mii [2022-07-20 03:46:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_mii [2022-07-20 03:46:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_switch_mac_port [2022-07-20 03:46:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_switch_mac_port [2022-07-20 03:46:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-20 03:46:50,093 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-20 03:46:50,093 INFO L130 BoogieDeclarations]: Found specification of procedure srom_latch [2022-07-20 03:46:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_latch [2022-07-20 03:46:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_69 [2022-07-20 03:46:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_69 [2022-07-20 03:46:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 03:46:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 03:46:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure build_setup_frame [2022-07-20 03:46:50,094 INFO L138 BoogieDeclarations]: Found implementation of procedure build_setup_frame [2022-07-20 03:46:50,094 INFO L130 BoogieDeclarations]: Found specification of procedure type2_infoblock [2022-07-20 03:46:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure type2_infoblock [2022-07-20 03:46:50,095 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-07-20 03:46:50,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~C_INT~structend~~TO~C_INT [2022-07-20 03:46:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure type0_infoblock [2022-07-20 03:46:50,096 INFO L138 BoogieDeclarations]: Found implementation of procedure type0_infoblock [2022-07-20 03:46:50,096 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-07-20 03:46:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-07-20 03:46:50,097 INFO L130 BoogieDeclarations]: Found specification of procedure DevicePresent [2022-07-20 03:46:50,097 INFO L138 BoogieDeclarations]: Found implementation of procedure DevicePresent [2022-07-20 03:46:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-07-20 03:46:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-07-20 03:46:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-20 03:46:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-20 03:46:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure dc21143_infoleaf [2022-07-20 03:46:50,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21143_infoleaf [2022-07-20 03:46:50,098 INFO L130 BoogieDeclarations]: Found specification of procedure set_multicast_list [2022-07-20 03:46:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure set_multicast_list [2022-07-20 03:46:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-20 03:46:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-20 03:46:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-20 03:46:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-20 03:46:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2022-07-20 03:46:50,099 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_sw_reset [2022-07-20 03:46:50,099 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_sw_reset [2022-07-20 03:46:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 03:46:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-20 03:46:50,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-20 03:46:50,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 03:46:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-20 03:46:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-20 03:46:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 03:46:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 03:46:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2022-07-20 03:46:50,101 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2022-07-20 03:46:50,101 INFO L130 BoogieDeclarations]: Found specification of procedure is_spd_100 [2022-07-20 03:46:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure is_spd_100 [2022-07-20 03:46:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-20 03:46:50,102 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-20 03:46:50,102 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2022-07-20 03:46:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~TO~C_INT [2022-07-20 03:46:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-20 03:46:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-20 03:46:50,103 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_mii [2022-07-20 03:46:50,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_mii [2022-07-20 03:46:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_rx_buffs [2022-07-20 03:46:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_rx_buffs [2022-07-20 03:46:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-20 03:46:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-20 03:46:50,104 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-20 03:46:50,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-20 03:46:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-20 03:46:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-20 03:46:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~C_INT [2022-07-20 03:46:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u_char~0~X~$Pointer$~TO~C_INT [2022-07-20 03:46:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-20 03:46:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-20 03:46:50,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 03:46:50,105 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 03:46:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-07-20 03:46:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-07-20 03:46:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-07-20 03:46:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-07-20 03:46:50,106 INFO L130 BoogieDeclarations]: Found specification of procedure ping_media [2022-07-20 03:46:50,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ping_media [2022-07-20 03:46:50,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-07-20 03:46:50,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-07-20 03:46:50,108 INFO L130 BoogieDeclarations]: Found specification of procedure srom_autoconf [2022-07-20 03:46:50,109 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_autoconf [2022-07-20 03:46:50,110 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-20 03:46:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-20 03:46:50,111 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-20 03:46:50,111 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-20 03:46:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_tx [2022-07-20 03:46:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_tx [2022-07-20 03:46:50,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-20 03:46:50,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-20 03:46:50,113 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_dequeue [2022-07-20 03:46:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_dequeue [2022-07-20 03:46:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure srom_rd [2022-07-20 03:46:50,118 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_rd [2022-07-20 03:46:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 03:46:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure SetMulticastFilter [2022-07-20 03:46:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMulticastFilter [2022-07-20 03:46:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 03:46:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ioctl [2022-07-20 03:46:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ioctl [2022-07-20 03:46:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-20 03:46:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-20 03:46:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-20 03:46:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-20 03:46:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 03:46:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 03:46:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 03:46:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 03:46:50,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-20 03:46:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 03:46:50,120 INFO L130 BoogieDeclarations]: Found specification of procedure getfrom_srom [2022-07-20 03:46:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getfrom_srom [2022-07-20 03:46:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2022-07-20 03:46:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2022-07-20 03:46:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure mii_swap [2022-07-20 03:46:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_swap [2022-07-20 03:46:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_reset_phy [2022-07-20 03:46:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_reset_phy [2022-07-20 03:46:50,121 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_putb_cache [2022-07-20 03:46:50,121 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_putb_cache [2022-07-20 03:46:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-20 03:46:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-20 03:46:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure dc21142_infoleaf [2022-07-20 03:46:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21142_infoleaf [2022-07-20 03:46:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-20 03:46:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-20 03:46:50,122 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_stats [2022-07-20 03:46:50,122 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_stats [2022-07-20 03:46:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-07-20 03:46:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-07-20 03:46:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-07-20 03:46:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-07-20 03:46:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 03:46:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init_connection [2022-07-20 03:46:50,123 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init_connection [2022-07-20 03:46:50,123 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wr [2022-07-20 03:46:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wr [2022-07-20 03:46:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 03:46:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 03:46:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_state [2022-07-20 03:46:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_state [2022-07-20 03:46:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 03:46:50,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-20 03:46:50,124 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-20 03:46:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 03:46:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure type3_infoblock [2022-07-20 03:46:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure type3_infoblock [2022-07-20 03:46:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 03:46:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 03:46:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 03:46:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 03:46:50,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 03:46:50,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 03:46:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure reset_init_sia [2022-07-20 03:46:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_init_sia [2022-07-20 03:46:50,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-20 03:46:50,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-20 03:46:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-07-20 03:46:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-07-20 03:46:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_alloc_rx_buff [2022-07-20 03:46:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_alloc_rx_buff [2022-07-20 03:46:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure test_for_100Mb [2022-07-20 03:46:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure test_for_100Mb [2022-07-20 03:46:50,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-07-20 03:46:50,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-07-20 03:46:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure type5_infoblock [2022-07-20 03:46:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure type5_infoblock [2022-07-20 03:46:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure load_packet [2022-07-20 03:46:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure load_packet [2022-07-20 03:46:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140m_autoconf [2022-07-20 03:46:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140m_autoconf [2022-07-20 03:46:50,128 INFO L130 BoogieDeclarations]: Found specification of procedure is_100_up [2022-07-20 03:46:50,128 INFO L138 BoogieDeclarations]: Found implementation of procedure is_100_up [2022-07-20 03:46:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_open [2022-07-20 03:46:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_open [2022-07-20 03:46:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 03:46:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 03:46:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure mii_ta [2022-07-20 03:46:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_ta [2022-07-20 03:46:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-20 03:46:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-20 03:46:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure dc21040_autoconf [2022-07-20 03:46:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21040_autoconf [2022-07-20 03:46:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2022-07-20 03:46:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2022-07-20 03:46:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure test_mii_reg [2022-07-20 03:46:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure test_mii_reg [2022-07-20 03:46:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_cache_state [2022-07-20 03:46:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_cache_state [2022-07-20 03:46:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-20 03:46:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-20 03:46:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_pci_remove [2022-07-20 03:46:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_pci_remove [2022-07-20 03:46:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 03:46:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_media [2022-07-20 03:46:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_media [2022-07-20 03:46:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure autoconf_media [2022-07-20 03:46:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure autoconf_media [2022-07-20 03:46:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_autoconf [2022-07-20 03:46:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_autoconf [2022-07-20 03:46:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure mii_rd [2022-07-20 03:46:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_rd [2022-07-20 03:46:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 03:46:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_ast [2022-07-20 03:46:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_ast [2022-07-20 03:46:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le32 [2022-07-20 03:46:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le32 [2022-07-20 03:46:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 03:46:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 03:46:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 03:46:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 03:46:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 03:46:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-20 03:46:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-20 03:46:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure is_10_up [2022-07-20 03:46:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure is_10_up [2022-07-20 03:46:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-07-20 03:46:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-07-20 03:46:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure is_anc_capable [2022-07-20 03:46:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure is_anc_capable [2022-07-20 03:46:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure type1_infoblock [2022-07-20 03:46:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure type1_infoblock [2022-07-20 03:46:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-20 03:46:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-20 03:46:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-20 03:46:50,139 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-20 03:46:50,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_request_irq [2022-07-20 03:46:50,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_request_irq [2022-07-20 03:46:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure dc21140_infoleaf [2022-07-20 03:46:50,140 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21140_infoleaf [2022-07-20 03:46:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-20 03:46:50,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-20 03:46:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2022-07-20 03:46:50,140 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2022-07-20 03:46:50,140 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_queue_pkt [2022-07-20 03:46:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_queue_pkt [2022-07-20 03:46:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure test_media [2022-07-20 03:46:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure test_media [2022-07-20 03:46:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buffs [2022-07-20 03:46:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buffs [2022-07-20 03:46:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_insert [2022-07-20 03:46:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_insert [2022-07-20 03:46:50,141 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-20 03:46:50,141 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-20 03:46:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-20 03:46:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-20 03:46:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-20 03:46:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-20 03:46:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_init [2022-07-20 03:46:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_init [2022-07-20 03:46:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 03:46:50,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 03:46:50,142 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-07-20 03:46:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-07-20 03:46:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_73 [2022-07-20 03:46:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_73 [2022-07-20 03:46:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure dc21041_infoleaf [2022-07-20 03:46:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure dc21041_infoleaf [2022-07-20 03:46:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure srom_exec [2022-07-20 03:46:50,143 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_exec [2022-07-20 03:46:50,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 03:46:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 03:46:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 03:46:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 03:46:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 03:46:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 03:46:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure gep_wr [2022-07-20 03:46:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_wr [2022-07-20 03:46:50,144 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-20 03:46:50,144 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-20 03:46:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure sendto_srom [2022-07-20 03:46:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure sendto_srom [2022-07-20 03:46:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-20 03:46:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-20 03:46:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_get_cache [2022-07-20 03:46:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_get_cache [2022-07-20 03:46:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_suspect_state [2022-07-20 03:46:50,145 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_suspect_state [2022-07-20 03:46:50,145 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_dbg_mii [2022-07-20 03:46:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_dbg_mii [2022-07-20 03:46:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure compact_infoblock [2022-07-20 03:46:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure compact_infoblock [2022-07-20 03:46:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-20 03:46:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-20 03:46:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure gep_rd [2022-07-20 03:46:50,146 INFO L138 BoogieDeclarations]: Found implementation of procedure gep_rd [2022-07-20 03:46:50,146 INFO L130 BoogieDeclarations]: Found specification of procedure mii_address [2022-07-20 03:46:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_address [2022-07-20 03:46:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_free_tx_buff [2022-07-20 03:46:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_free_tx_buff [2022-07-20 03:46:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_setup_intr [2022-07-20 03:46:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_setup_intr [2022-07-20 03:46:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_save_skbs [2022-07-20 03:46:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_save_skbs [2022-07-20 03:46:50,147 INFO L130 BoogieDeclarations]: Found specification of procedure dc2114x_autoconf [2022-07-20 03:46:50,147 INFO L138 BoogieDeclarations]: Found implementation of procedure dc2114x_autoconf [2022-07-20 03:46:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-20 03:46:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-20 03:46:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure srom_map_media [2022-07-20 03:46:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure srom_map_media [2022-07-20 03:46:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_strncmp [2022-07-20 03:46:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_strncmp [2022-07-20 03:46:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2022-07-20 03:46:50,148 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2022-07-20 03:46:50,148 INFO L130 BoogieDeclarations]: Found specification of procedure de4x5_close [2022-07-20 03:46:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure de4x5_close [2022-07-20 03:46:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure yawn [2022-07-20 03:46:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure yawn [2022-07-20 03:46:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure mii_wdata [2022-07-20 03:46:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure mii_wdata [2022-07-20 03:46:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-20 03:46:50,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-20 03:46:50,149 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2022-07-20 03:46:51,325 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 03:46:51,333 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 03:46:54,473 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 03:48:08,099 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 03:48:08,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 03:48:08,130 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-07-20 03:48:08,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:48:08 BoogieIcfgContainer [2022-07-20 03:48:08,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 03:48:08,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 03:48:08,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 03:48:08,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 03:48:08,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:46:44" (1/3) ... [2022-07-20 03:48:08,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3632d3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:48:08, skipping insertion in model container [2022-07-20 03:48:08,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:46:49" (2/3) ... [2022-07-20 03:48:08,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3632d3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:48:08, skipping insertion in model container [2022-07-20 03:48:08,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:48:08" (3/3) ... [2022-07-20 03:48:08,147 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-spinlock_drivers-net-ethernet-dec-tulip-de4x5.cil.i [2022-07-20 03:48:08,159 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 03:48:08,160 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-20 03:48:08,284 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 03:48:08,291 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ba5b682, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4413ff7d [2022-07-20 03:48:08,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-20 03:48:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand has 3798 states, 2688 states have (on average 1.3530505952380953) internal successors, (3637), 2765 states have internal predecessors, (3637), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) [2022-07-20 03:48:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-20 03:48:08,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:08,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:08,321 INFO L420 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)] === [2022-07-20 03:48:08,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1763242755, now seen corresponding path program 1 times [2022-07-20 03:48:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:08,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407739435] [2022-07-20 03:48:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:08,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:08,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:08,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:08,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 03:48:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:09,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:48:09,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 03:48:11,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 03:48:11,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:48:11,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407739435] [2022-07-20 03:48:11,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407739435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 03:48:11,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 03:48:11,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 03:48:11,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261083631] [2022-07-20 03:48:11,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:48:11,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:48:11,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:48:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:48:11,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 03:48:11,373 INFO L87 Difference]: Start difference. First operand has 3798 states, 2688 states have (on average 1.3530505952380953) internal successors, (3637), 2765 states have internal predecessors, (3637), 972 states have call successors, (972), 151 states have call predecessors, (972), 150 states have return successors, (963), 949 states have call predecessors, (963), 963 states have call successors, (963) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 03:48:12,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:48:12,219 INFO L93 Difference]: Finished difference Result 7523 states and 11247 transitions. [2022-07-20 03:48:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 03:48:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 48 [2022-07-20 03:48:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:48:12,260 INFO L225 Difference]: With dead ends: 7523 [2022-07-20 03:48:12,261 INFO L226 Difference]: Without dead ends: 3736 [2022-07-20 03:48:12,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:48:12,298 INFO L413 NwaCegarLoop]: 5462 mSDtfsCounter, 5436 mSDsluCounter, 10911 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5437 SdHoareTripleChecker+Valid, 16373 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 03:48:12,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5437 Valid, 16373 Invalid, 21 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 03:48:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-07-20 03:48:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3736. [2022-07-20 03:48:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 2636 states have (on average 1.3482549317147192) internal successors, (3554), 2694 states have internal predecessors, (3554), 947 states have call successors, (947), 151 states have call predecessors, (947), 150 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-07-20 03:48:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5445 transitions. [2022-07-20 03:48:12,587 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5445 transitions. Word has length 48 [2022-07-20 03:48:12,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:48:12,588 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 5445 transitions. [2022-07-20 03:48:12,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-20 03:48:12,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5445 transitions. [2022-07-20 03:48:12,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 03:48:12,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:12,592 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:12,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-20 03:48:12,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:48:12,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-20 03:48:12,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:12,808 INFO L85 PathProgramCache]: Analyzing trace with hash -524435869, now seen corresponding path program 1 times [2022-07-20 03:48:12,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:12,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921606244] [2022-07-20 03:48:12,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:12,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:12,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:12,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:12,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 03:48:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:14,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:48:14,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 03:48:15,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:48:16,599 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-20 03:48:16,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:48:16,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921606244] [2022-07-20 03:48:16,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921606244] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:48:16,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:48:16,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:48:16,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675791923] [2022-07-20 03:48:16,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:48:16,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:48:16,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:48:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:48:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:48:16,602 INFO L87 Difference]: Start difference. First operand 3736 states and 5445 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 03:48:17,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:48:17,566 INFO L93 Difference]: Finished difference Result 3742 states and 5450 transitions. [2022-07-20 03:48:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:48:17,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2022-07-20 03:48:17,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:48:17,597 INFO L225 Difference]: With dead ends: 3742 [2022-07-20 03:48:17,597 INFO L226 Difference]: Without dead ends: 3740 [2022-07-20 03:48:17,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:48:17,603 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5424 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 03:48:17,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5424 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 03:48:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2022-07-20 03:48:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 3740. [2022-07-20 03:48:17,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3740 states, 2639 states have (on average 1.3478590375142099) internal successors, (3557), 2697 states have internal predecessors, (3557), 947 states have call successors, (947), 152 states have call predecessors, (947), 151 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-07-20 03:48:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3740 states to 3740 states and 5448 transitions. [2022-07-20 03:48:17,776 INFO L78 Accepts]: Start accepts. Automaton has 3740 states and 5448 transitions. Word has length 53 [2022-07-20 03:48:17,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:48:17,777 INFO L495 AbstractCegarLoop]: Abstraction has 3740 states and 5448 transitions. [2022-07-20 03:48:17,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-20 03:48:17,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3740 states and 5448 transitions. [2022-07-20 03:48:17,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-20 03:48:17,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:17,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:17,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 03:48:17,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:48:18,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-20 03:48:18,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:18,000 INFO L85 PathProgramCache]: Analyzing trace with hash 77141117, now seen corresponding path program 1 times [2022-07-20 03:48:18,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211392412] [2022-07-20 03:48:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:18,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:18,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:18,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:18,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 03:48:19,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:19,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:48:19,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-20 03:48:20,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:48:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-20 03:48:21,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:48:21,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211392412] [2022-07-20 03:48:21,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211392412] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:48:21,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:48:21,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:48:21,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723812338] [2022-07-20 03:48:21,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:48:21,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:48:21,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:48:21,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:48:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:48:21,797 INFO L87 Difference]: Start difference. First operand 3740 states and 5448 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 03:48:22,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:48:22,635 INFO L93 Difference]: Finished difference Result 3746 states and 5453 transitions. [2022-07-20 03:48:22,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:48:22,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2022-07-20 03:48:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:48:22,661 INFO L225 Difference]: With dead ends: 3746 [2022-07-20 03:48:22,662 INFO L226 Difference]: Without dead ends: 3744 [2022-07-20 03:48:22,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:48:22,668 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5423 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 03:48:22,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5423 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 03:48:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2022-07-20 03:48:22,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3744. [2022-07-20 03:48:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 2642 states have (on average 1.3474640423921271) internal successors, (3560), 2700 states have internal predecessors, (3560), 947 states have call successors, (947), 153 states have call predecessors, (947), 152 states have return successors, (944), 930 states have call predecessors, (944), 944 states have call successors, (944) [2022-07-20 03:48:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5451 transitions. [2022-07-20 03:48:22,834 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5451 transitions. Word has length 58 [2022-07-20 03:48:22,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:48:22,835 INFO L495 AbstractCegarLoop]: Abstraction has 3744 states and 5451 transitions. [2022-07-20 03:48:22,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-20 03:48:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5451 transitions. [2022-07-20 03:48:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-20 03:48:22,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:22,838 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:22,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 03:48:23,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:48:23,056 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-20 03:48:23,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:23,056 INFO L85 PathProgramCache]: Analyzing trace with hash 667830667, now seen corresponding path program 1 times [2022-07-20 03:48:23,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:23,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001183698] [2022-07-20 03:48:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:23,059 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:23,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:23,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 03:48:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:24,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-20 03:48:24,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 03:48:27,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:48:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-20 03:48:30,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:48:30,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001183698] [2022-07-20 03:48:30,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001183698] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 03:48:30,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 03:48:30,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 18 [2022-07-20 03:48:30,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313347843] [2022-07-20 03:48:30,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 03:48:30,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-20 03:48:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:48:30,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-20 03:48:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-20 03:48:30,017 INFO L87 Difference]: Start difference. First operand 3744 states and 5451 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-20 03:48:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:48:41,248 INFO L93 Difference]: Finished difference Result 3798 states and 5518 transitions. [2022-07-20 03:48:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-20 03:48:41,249 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 70 [2022-07-20 03:48:41,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:48:41,277 INFO L225 Difference]: With dead ends: 3798 [2022-07-20 03:48:41,277 INFO L226 Difference]: Without dead ends: 3758 [2022-07-20 03:48:41,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-07-20 03:48:41,282 INFO L413 NwaCegarLoop]: 5406 mSDtfsCounter, 42 mSDsluCounter, 80951 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 86357 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-20 03:48:41,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 86357 Invalid, 782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-20 03:48:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-07-20 03:48:41,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3754. [2022-07-20 03:48:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 2650 states have (on average 1.3464150943396227) internal successors, (3568), 2708 states have internal predecessors, (3568), 949 states have call successors, (949), 153 states have call predecessors, (949), 152 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-07-20 03:48:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 5463 transitions. [2022-07-20 03:48:41,457 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 5463 transitions. Word has length 70 [2022-07-20 03:48:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:48:41,458 INFO L495 AbstractCegarLoop]: Abstraction has 3754 states and 5463 transitions. [2022-07-20 03:48:41,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-20 03:48:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 5463 transitions. [2022-07-20 03:48:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 03:48:41,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:41,461 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:41,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-20 03:48:41,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:48:41,684 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-20 03:48:41,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash -18966941, now seen corresponding path program 1 times [2022-07-20 03:48:41,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:41,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824277539] [2022-07-20 03:48:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:41,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:41,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:41,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:41,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 03:48:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:43,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:48:43,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 03:48:44,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:48:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-20 03:48:45,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:48:45,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824277539] [2022-07-20 03:48:45,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824277539] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:48:45,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:48:45,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:48:45,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196562789] [2022-07-20 03:48:45,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:48:45,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:48:45,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:48:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:48:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:48:45,367 INFO L87 Difference]: Start difference. First operand 3754 states and 5463 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 03:48:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:48:46,136 INFO L93 Difference]: Finished difference Result 3760 states and 5468 transitions. [2022-07-20 03:48:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:48:46,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 63 [2022-07-20 03:48:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:48:46,157 INFO L225 Difference]: With dead ends: 3760 [2022-07-20 03:48:46,158 INFO L226 Difference]: Without dead ends: 3758 [2022-07-20 03:48:46,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:48:46,162 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:48:46,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5422 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:48:46,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-07-20 03:48:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3758. [2022-07-20 03:48:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 2653 states have (on average 1.3460233697700716) internal successors, (3571), 2711 states have internal predecessors, (3571), 949 states have call successors, (949), 154 states have call predecessors, (949), 153 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-07-20 03:48:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5466 transitions. [2022-07-20 03:48:46,344 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5466 transitions. Word has length 63 [2022-07-20 03:48:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:48:46,344 INFO L495 AbstractCegarLoop]: Abstraction has 3758 states and 5466 transitions. [2022-07-20 03:48:46,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-20 03:48:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5466 transitions. [2022-07-20 03:48:46,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-20 03:48:46,346 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:46,346 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:46,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 03:48:46,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:48:46,559 INFO L420 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)] === [2022-07-20 03:48:46,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:46,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1366911997, now seen corresponding path program 1 times [2022-07-20 03:48:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:46,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52008903] [2022-07-20 03:48:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:46,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:46,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:46,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:46,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 03:48:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:47,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:48:47,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-20 03:48:49,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:48:50,457 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-20 03:48:50,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:48:50,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52008903] [2022-07-20 03:48:50,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52008903] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:48:50,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:48:50,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:48:50,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762050469] [2022-07-20 03:48:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:48:50,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:48:50,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:48:50,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:48:50,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:48:50,459 INFO L87 Difference]: Start difference. First operand 3758 states and 5466 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 03:48:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:48:51,202 INFO L93 Difference]: Finished difference Result 3764 states and 5471 transitions. [2022-07-20 03:48:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:48:51,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2022-07-20 03:48:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:48:51,225 INFO L225 Difference]: With dead ends: 3764 [2022-07-20 03:48:51,225 INFO L226 Difference]: Without dead ends: 3762 [2022-07-20 03:48:51,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:48:51,230 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5421 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:48:51,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5421 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:48:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-07-20 03:48:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3762. [2022-07-20 03:48:51,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3762 states, 2656 states have (on average 1.345632530120482) internal successors, (3574), 2714 states have internal predecessors, (3574), 949 states have call successors, (949), 155 states have call predecessors, (949), 154 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-07-20 03:48:51,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5469 transitions. [2022-07-20 03:48:51,390 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5469 transitions. Word has length 68 [2022-07-20 03:48:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:48:51,391 INFO L495 AbstractCegarLoop]: Abstraction has 3762 states and 5469 transitions. [2022-07-20 03:48:51,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-20 03:48:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5469 transitions. [2022-07-20 03:48:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-20 03:48:51,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:51,392 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:51,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 03:48:51,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:48:51,613 INFO L420 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)] === [2022-07-20 03:48:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash 239279715, now seen corresponding path program 1 times [2022-07-20 03:48:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:51,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820802850] [2022-07-20 03:48:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:51,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:51,617 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:51,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 03:48:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:53,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:48:53,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-20 03:48:54,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:48:55,630 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-20 03:48:55,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:48:55,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820802850] [2022-07-20 03:48:55,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820802850] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:48:55,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:48:55,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:48:55,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482412716] [2022-07-20 03:48:55,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:48:55,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:48:55,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:48:55,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:48:55,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:48:55,632 INFO L87 Difference]: Start difference. First operand 3762 states and 5469 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-20 03:48:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:48:56,359 INFO L93 Difference]: Finished difference Result 3768 states and 5474 transitions. [2022-07-20 03:48:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:48:56,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 73 [2022-07-20 03:48:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:48:56,400 INFO L225 Difference]: With dead ends: 3768 [2022-07-20 03:48:56,401 INFO L226 Difference]: Without dead ends: 3766 [2022-07-20 03:48:56,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:48:56,405 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5420 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:48:56,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5420 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:48:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2022-07-20 03:48:56,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3766. [2022-07-20 03:48:56,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 2659 states have (on average 1.3452425723956374) internal successors, (3577), 2717 states have internal predecessors, (3577), 949 states have call successors, (949), 156 states have call predecessors, (949), 155 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-07-20 03:48:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5472 transitions. [2022-07-20 03:48:56,569 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5472 transitions. Word has length 73 [2022-07-20 03:48:56,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:48:56,570 INFO L495 AbstractCegarLoop]: Abstraction has 3766 states and 5472 transitions. [2022-07-20 03:48:56,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-20 03:48:56,571 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5472 transitions. [2022-07-20 03:48:56,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-20 03:48:56,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:48:56,574 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:48:56,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 03:48:56,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:48:56,796 INFO L420 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)] === [2022-07-20 03:48:56,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:48:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1407456125, now seen corresponding path program 1 times [2022-07-20 03:48:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:48:56,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778463862] [2022-07-20 03:48:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:48:56,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:48:56,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:48:56,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:48:56,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 03:48:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:48:58,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:48:58,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:48:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-20 03:48:59,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-20 03:49:00,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:00,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778463862] [2022-07-20 03:49:00,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778463862] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:49:00,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:49:00,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:49:00,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555409078] [2022-07-20 03:49:00,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:00,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:49:00,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:49:00,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:49:00,834 INFO L87 Difference]: Start difference. First operand 3766 states and 5472 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 03:49:01,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:01,498 INFO L93 Difference]: Finished difference Result 3772 states and 5477 transitions. [2022-07-20 03:49:01,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:49:01,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2022-07-20 03:49:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:01,516 INFO L225 Difference]: With dead ends: 3772 [2022-07-20 03:49:01,516 INFO L226 Difference]: Without dead ends: 3770 [2022-07-20 03:49:01,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:49:01,518 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5419 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:01,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5419 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:49:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3770 states. [2022-07-20 03:49:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3770 to 3770. [2022-07-20 03:49:01,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3770 states, 2662 states have (on average 1.3448534936138241) internal successors, (3580), 2720 states have internal predecessors, (3580), 949 states have call successors, (949), 157 states have call predecessors, (949), 156 states have return successors, (946), 932 states have call predecessors, (946), 946 states have call successors, (946) [2022-07-20 03:49:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3770 states to 3770 states and 5475 transitions. [2022-07-20 03:49:01,665 INFO L78 Accepts]: Start accepts. Automaton has 3770 states and 5475 transitions. Word has length 78 [2022-07-20 03:49:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:01,666 INFO L495 AbstractCegarLoop]: Abstraction has 3770 states and 5475 transitions. [2022-07-20 03:49:01,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-20 03:49:01,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3770 states and 5475 transitions. [2022-07-20 03:49:01,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-20 03:49:01,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:01,669 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:01,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:01,884 INFO L420 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)] === [2022-07-20 03:49:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -770746781, now seen corresponding path program 1 times [2022-07-20 03:49:01,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:01,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737977050] [2022-07-20 03:49:01,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:01,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:01,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:01,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:01,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 03:49:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:03,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:49:03,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-20 03:49:05,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-20 03:49:05,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:05,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737977050] [2022-07-20 03:49:05,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737977050] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:49:05,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:49:05,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:49:05,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139197512] [2022-07-20 03:49:05,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:05,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:49:05,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:49:05,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:49:05,915 INFO L87 Difference]: Start difference. First operand 3770 states and 5475 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-20 03:49:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:06,730 INFO L93 Difference]: Finished difference Result 4065 states and 5835 transitions. [2022-07-20 03:49:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:49:06,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2022-07-20 03:49:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:06,749 INFO L225 Difference]: With dead ends: 4065 [2022-07-20 03:49:06,750 INFO L226 Difference]: Without dead ends: 4063 [2022-07-20 03:49:06,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:49:06,756 INFO L413 NwaCegarLoop]: 5550 mSDtfsCounter, 5130 mSDsluCounter, 11714 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5135 SdHoareTripleChecker+Valid, 17264 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:06,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5135 Valid, 17264 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 03:49:06,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2022-07-20 03:49:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4057. [2022-07-20 03:49:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 2860 states have (on average 1.336013986013986) internal successors, (3821), 2925 states have internal predecessors, (3821), 1005 states have call successors, (1005), 193 states have call predecessors, (1005), 189 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-07-20 03:49:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 5829 transitions. [2022-07-20 03:49:07,011 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 5829 transitions. Word has length 83 [2022-07-20 03:49:07,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:07,012 INFO L495 AbstractCegarLoop]: Abstraction has 4057 states and 5829 transitions. [2022-07-20 03:49:07,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-20 03:49:07,012 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 5829 transitions. [2022-07-20 03:49:07,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-20 03:49:07,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:07,014 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:07,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:07,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:07,231 INFO L420 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)] === [2022-07-20 03:49:07,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:07,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1623913731, now seen corresponding path program 1 times [2022-07-20 03:49:07,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:07,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963274525] [2022-07-20 03:49:07,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:07,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:07,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:07,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:07,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 03:49:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:08,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:49:08,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-20 03:49:10,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-20 03:49:11,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:11,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963274525] [2022-07-20 03:49:11,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963274525] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:49:11,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:49:11,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:49:11,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013730449] [2022-07-20 03:49:11,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:11,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:49:11,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:11,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:49:11,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:49:11,711 INFO L87 Difference]: Start difference. First operand 4057 states and 5829 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 03:49:12,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:12,451 INFO L93 Difference]: Finished difference Result 4063 states and 5834 transitions. [2022-07-20 03:49:12,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:49:12,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 88 [2022-07-20 03:49:12,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:12,473 INFO L225 Difference]: With dead ends: 4063 [2022-07-20 03:49:12,473 INFO L226 Difference]: Without dead ends: 4061 [2022-07-20 03:49:12,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:49:12,477 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5417 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:12,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5417 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:49:12,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2022-07-20 03:49:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 4061. [2022-07-20 03:49:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4061 states, 2863 states have (on average 1.3356618931191058) internal successors, (3824), 2928 states have internal predecessors, (3824), 1005 states have call successors, (1005), 194 states have call predecessors, (1005), 190 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-07-20 03:49:12,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5832 transitions. [2022-07-20 03:49:12,657 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5832 transitions. Word has length 88 [2022-07-20 03:49:12,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:12,657 INFO L495 AbstractCegarLoop]: Abstraction has 4061 states and 5832 transitions. [2022-07-20 03:49:12,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 03:49:12,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5832 transitions. [2022-07-20 03:49:12,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-20 03:49:12,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:12,659 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:12,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:12,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:12,876 INFO L420 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)] === [2022-07-20 03:49:12,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1885814371, now seen corresponding path program 1 times [2022-07-20 03:49:12,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:12,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038823474] [2022-07-20 03:49:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:12,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:12,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:12,880 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:12,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 03:49:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:14,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:49:14,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-20 03:49:16,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-07-20 03:49:17,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:17,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038823474] [2022-07-20 03:49:17,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038823474] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:49:17,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:49:17,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:49:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858365343] [2022-07-20 03:49:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:17,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:49:17,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:49:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:49:17,797 INFO L87 Difference]: Start difference. First operand 4061 states and 5832 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 03:49:18,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:18,532 INFO L93 Difference]: Finished difference Result 4067 states and 5837 transitions. [2022-07-20 03:49:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:49:18,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2022-07-20 03:49:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:18,550 INFO L225 Difference]: With dead ends: 4067 [2022-07-20 03:49:18,550 INFO L226 Difference]: Without dead ends: 4065 [2022-07-20 03:49:18,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:49:18,552 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5416 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:18,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5416 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:49:18,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2022-07-20 03:49:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 4065. [2022-07-20 03:49:18,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4065 states, 2866 states have (on average 1.3353105373342637) internal successors, (3827), 2931 states have internal predecessors, (3827), 1005 states have call successors, (1005), 195 states have call predecessors, (1005), 191 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-07-20 03:49:18,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4065 states to 4065 states and 5835 transitions. [2022-07-20 03:49:18,731 INFO L78 Accepts]: Start accepts. Automaton has 4065 states and 5835 transitions. Word has length 93 [2022-07-20 03:49:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:18,732 INFO L495 AbstractCegarLoop]: Abstraction has 4065 states and 5835 transitions. [2022-07-20 03:49:18,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 03:49:18,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4065 states and 5835 transitions. [2022-07-20 03:49:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-20 03:49:18,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:18,734 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:18,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:18,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:18,955 INFO L420 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)] === [2022-07-20 03:49:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1137201789, now seen corresponding path program 1 times [2022-07-20 03:49:18,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:18,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1721299241] [2022-07-20 03:49:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:18,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:18,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:18,960 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:18,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 03:49:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:20,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:49:20,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-20 03:49:23,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-20 03:49:23,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:23,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1721299241] [2022-07-20 03:49:23,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1721299241] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:49:23,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:49:23,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:49:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521656186] [2022-07-20 03:49:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:49:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:49:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:49:23,968 INFO L87 Difference]: Start difference. First operand 4065 states and 5835 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 03:49:24,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:24,703 INFO L93 Difference]: Finished difference Result 4071 states and 5840 transitions. [2022-07-20 03:49:24,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:49:24,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 98 [2022-07-20 03:49:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:24,721 INFO L225 Difference]: With dead ends: 4071 [2022-07-20 03:49:24,722 INFO L226 Difference]: Without dead ends: 4069 [2022-07-20 03:49:24,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:49:24,726 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5415 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:24,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5415 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:49:24,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4069 states. [2022-07-20 03:49:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4069 to 4069. [2022-07-20 03:49:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 2869 states have (on average 1.3349599163471593) internal successors, (3830), 2934 states have internal predecessors, (3830), 1005 states have call successors, (1005), 196 states have call predecessors, (1005), 192 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-07-20 03:49:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5838 transitions. [2022-07-20 03:49:24,967 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5838 transitions. Word has length 98 [2022-07-20 03:49:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:24,968 INFO L495 AbstractCegarLoop]: Abstraction has 4069 states and 5838 transitions. [2022-07-20 03:49:24,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-20 03:49:24,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5838 transitions. [2022-07-20 03:49:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-20 03:49:24,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:24,970 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:24,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:25,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:25,175 INFO L420 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)] === [2022-07-20 03:49:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1301359005, now seen corresponding path program 1 times [2022-07-20 03:49:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:25,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572301192] [2022-07-20 03:49:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:25,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:25,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:25,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:25,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 03:49:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:26,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:49:26,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-07-20 03:49:29,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-07-20 03:49:30,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:30,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572301192] [2022-07-20 03:49:30,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572301192] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:49:30,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:49:30,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:49:30,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728121238] [2022-07-20 03:49:30,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:30,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:49:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:30,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:49:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:49:30,123 INFO L87 Difference]: Start difference. First operand 4069 states and 5838 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-20 03:49:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:30,884 INFO L93 Difference]: Finished difference Result 4075 states and 5843 transitions. [2022-07-20 03:49:30,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:49:30,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 103 [2022-07-20 03:49:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:30,901 INFO L225 Difference]: With dead ends: 4075 [2022-07-20 03:49:30,902 INFO L226 Difference]: Without dead ends: 4071 [2022-07-20 03:49:30,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:49:30,905 INFO L413 NwaCegarLoop]: 5442 mSDtfsCounter, 5413 mSDsluCounter, 10864 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 16306 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:30,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 16306 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:49:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2022-07-20 03:49:31,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4071. [2022-07-20 03:49:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4071 states, 2871 states have (on average 1.334378265412748) internal successors, (3831), 2935 states have internal predecessors, (3831), 1005 states have call successors, (1005), 197 states have call predecessors, (1005), 192 states have return successors, (1003), 982 states have call predecessors, (1003), 1002 states have call successors, (1003) [2022-07-20 03:49:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 5839 transitions. [2022-07-20 03:49:31,100 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 5839 transitions. Word has length 103 [2022-07-20 03:49:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:31,100 INFO L495 AbstractCegarLoop]: Abstraction has 4071 states and 5839 transitions. [2022-07-20 03:49:31,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-20 03:49:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 5839 transitions. [2022-07-20 03:49:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 03:49:31,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:31,103 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:31,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:31,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:31,324 INFO L420 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)] === [2022-07-20 03:49:31,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1896224259, now seen corresponding path program 1 times [2022-07-20 03:49:31,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:31,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502502783] [2022-07-20 03:49:31,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:31,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:31,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:31,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:31,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 03:49:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:32,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 03:49:32,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-20 03:49:35,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-20 03:49:36,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:36,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502502783] [2022-07-20 03:49:36,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502502783] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 03:49:36,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 03:49:36,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 03:49:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688518389] [2022-07-20 03:49:36,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:36,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 03:49:36,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:36,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 03:49:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 03:49:36,440 INFO L87 Difference]: Start difference. First operand 4071 states and 5839 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 03:49:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:37,115 INFO L93 Difference]: Finished difference Result 4071 states and 5839 transitions. [2022-07-20 03:49:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 03:49:37,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2022-07-20 03:49:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:37,133 INFO L225 Difference]: With dead ends: 4071 [2022-07-20 03:49:37,134 INFO L226 Difference]: Without dead ends: 3968 [2022-07-20 03:49:37,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-20 03:49:37,138 INFO L413 NwaCegarLoop]: 5440 mSDtfsCounter, 5409 mSDsluCounter, 10863 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5409 SdHoareTripleChecker+Valid, 16303 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:37,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5409 Valid, 16303 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 03:49:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-07-20 03:49:37,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3968. [2022-07-20 03:49:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 2805 states have (on average 1.3411764705882352) internal successors, (3762), 2867 states have internal predecessors, (3762), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-07-20 03:49:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5725 transitions. [2022-07-20 03:49:37,347 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5725 transitions. Word has length 108 [2022-07-20 03:49:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:37,347 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5725 transitions. [2022-07-20 03:49:37,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-20 03:49:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5725 transitions. [2022-07-20 03:49:37,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-20 03:49:37,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:37,358 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:37,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:37,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:37,580 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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)] === [2022-07-20 03:49:37,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1429581440, now seen corresponding path program 1 times [2022-07-20 03:49:37,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:37,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244936980] [2022-07-20 03:49:37,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:37,583 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:37,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:37,585 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:37,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 03:49:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:39,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-20 03:49:39,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 106 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-20 03:49:40,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 03:49:42,496 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-07-20 03:49:42,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:42,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244936980] [2022-07-20 03:49:42,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244936980] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 03:49:42,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 03:49:42,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-07-20 03:49:42,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35533608] [2022-07-20 03:49:42,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 03:49:42,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 03:49:42,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 03:49:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-20 03:49:42,499 INFO L87 Difference]: Start difference. First operand 3968 states and 5725 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2022-07-20 03:49:45,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:45,935 INFO L93 Difference]: Finished difference Result 7925 states and 11434 transitions. [2022-07-20 03:49:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-20 03:49:45,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) Word has length 181 [2022-07-20 03:49:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:45,955 INFO L225 Difference]: With dead ends: 7925 [2022-07-20 03:49:45,955 INFO L226 Difference]: Without dead ends: 3970 [2022-07-20 03:49:45,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-20 03:49:45,980 INFO L413 NwaCegarLoop]: 5347 mSDtfsCounter, 750 mSDsluCounter, 25795 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 31142 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:45,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 31142 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-20 03:49:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2022-07-20 03:49:46,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3968. [2022-07-20 03:49:46,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 2805 states have (on average 1.3408199643493761) internal successors, (3761), 2866 states have internal predecessors, (3761), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-07-20 03:49:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 5724 transitions. [2022-07-20 03:49:46,188 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 5724 transitions. Word has length 181 [2022-07-20 03:49:46,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:46,189 INFO L495 AbstractCegarLoop]: Abstraction has 3968 states and 5724 transitions. [2022-07-20 03:49:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 3 states have call successors, (38) [2022-07-20 03:49:46,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 5724 transitions. [2022-07-20 03:49:46,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-20 03:49:46,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:46,200 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:46,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:46,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:46,427 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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)] === [2022-07-20 03:49:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -470737409, now seen corresponding path program 1 times [2022-07-20 03:49:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:46,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16205544] [2022-07-20 03:49:46,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:46,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:46,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:46,431 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:46,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 03:49:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:48,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 03:49:48,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-20 03:49:50,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 03:49:50,572 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:50,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16205544] [2022-07-20 03:49:50,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16205544] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 03:49:50,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 03:49:50,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 03:49:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901248507] [2022-07-20 03:49:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:50,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 03:49:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 03:49:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 03:49:50,573 INFO L87 Difference]: Start difference. First operand 3968 states and 5724 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 03:49:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:49:50,721 INFO L93 Difference]: Finished difference Result 7918 states and 11423 transitions. [2022-07-20 03:49:50,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 03:49:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 184 [2022-07-20 03:49:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:49:50,738 INFO L225 Difference]: With dead ends: 7918 [2022-07-20 03:49:50,738 INFO L226 Difference]: Without dead ends: 3967 [2022-07-20 03:49:50,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 03:49:50,761 INFO L413 NwaCegarLoop]: 5369 mSDtfsCounter, 5323 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 5369 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 03:49:50,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5323 Valid, 5369 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 03:49:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-07-20 03:49:50,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3967. [2022-07-20 03:49:50,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 2804 states have (on average 1.340228245363766) internal successors, (3758), 2865 states have internal predecessors, (3758), 981 states have call successors, (981), 183 states have call predecessors, (981), 180 states have return successors, (982), 961 states have call predecessors, (982), 981 states have call successors, (982) [2022-07-20 03:49:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 5721 transitions. [2022-07-20 03:49:50,979 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 5721 transitions. Word has length 184 [2022-07-20 03:49:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:49:50,980 INFO L495 AbstractCegarLoop]: Abstraction has 3967 states and 5721 transitions. [2022-07-20 03:49:50,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-20 03:49:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 5721 transitions. [2022-07-20 03:49:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-20 03:49:50,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:49:50,990 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:49:51,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-20 03:49:51,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:49:51,212 INFO L420 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)] === [2022-07-20 03:49:51,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:49:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash -929426377, now seen corresponding path program 1 times [2022-07-20 03:49:51,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:49:51,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095910469] [2022-07-20 03:49:51,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:49:51,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:49:51,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:49:51,216 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:49:51,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 03:49:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:49:53,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-20 03:49:53,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:49:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-20 03:49:55,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 03:49:55,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:49:55,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095910469] [2022-07-20 03:49:55,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095910469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 03:49:55,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 03:49:55,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 03:49:55,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142079483] [2022-07-20 03:49:55,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:49:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 03:49:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:49:55,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 03:49:55,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-20 03:49:55,232 INFO L87 Difference]: Start difference. First operand 3967 states and 5721 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-20 03:50:04,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:50:04,124 INFO L93 Difference]: Finished difference Result 8572 states and 12404 transitions. [2022-07-20 03:50:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 03:50:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 186 [2022-07-20 03:50:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:50:04,141 INFO L225 Difference]: With dead ends: 8572 [2022-07-20 03:50:04,141 INFO L226 Difference]: Without dead ends: 4621 [2022-07-20 03:50:04,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-20 03:50:04,158 INFO L413 NwaCegarLoop]: 6304 mSDtfsCounter, 2125 mSDsluCounter, 60431 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2125 SdHoareTripleChecker+Valid, 66735 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-20 03:50:04,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2125 Valid, 66735 Invalid, 929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [424 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-20 03:50:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2022-07-20 03:50:04,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 3975. [2022-07-20 03:50:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 2810 states have (on average 1.3395017793594306) internal successors, (3764), 2871 states have internal predecessors, (3764), 983 states have call successors, (983), 183 states have call predecessors, (983), 180 states have return successors, (984), 963 states have call predecessors, (984), 983 states have call successors, (984) [2022-07-20 03:50:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5731 transitions. [2022-07-20 03:50:04,380 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5731 transitions. Word has length 186 [2022-07-20 03:50:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:50:04,380 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 5731 transitions. [2022-07-20 03:50:04,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-20 03:50:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5731 transitions. [2022-07-20 03:50:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-20 03:50:04,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:50:04,391 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:50:04,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-20 03:50:04,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:50:04,608 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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)] === [2022-07-20 03:50:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:50:04,608 INFO L85 PathProgramCache]: Analyzing trace with hash 468489244, now seen corresponding path program 1 times [2022-07-20 03:50:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:50:04,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926419706] [2022-07-20 03:50:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:50:04,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:50:04,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:50:04,612 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:50:04,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-20 03:50:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:50:06,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-20 03:50:06,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:50:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-20 03:50:08,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 03:50:08,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:50:08,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926419706] [2022-07-20 03:50:08,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926419706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 03:50:08,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 03:50:08,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-20 03:50:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038648669] [2022-07-20 03:50:08,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:50:08,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-20 03:50:08,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:50:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-20 03:50:08,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-20 03:50:08,717 INFO L87 Difference]: Start difference. First operand 3975 states and 5731 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-20 03:50:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 03:50:18,219 INFO L93 Difference]: Finished difference Result 9235 states and 13396 transitions. [2022-07-20 03:50:18,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-20 03:50:18,220 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 188 [2022-07-20 03:50:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 03:50:18,237 INFO L225 Difference]: With dead ends: 9235 [2022-07-20 03:50:18,237 INFO L226 Difference]: Without dead ends: 5276 [2022-07-20 03:50:18,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-07-20 03:50:18,249 INFO L413 NwaCegarLoop]: 6430 mSDtfsCounter, 2129 mSDsluCounter, 61567 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 67997 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-20 03:50:18,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 67997 Invalid, 971 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [431 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-20 03:50:18,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2022-07-20 03:50:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 3975. [2022-07-20 03:50:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3975 states, 2810 states have (on average 1.3395017793594306) internal successors, (3764), 2871 states have internal predecessors, (3764), 983 states have call successors, (983), 183 states have call predecessors, (983), 180 states have return successors, (984), 963 states have call predecessors, (984), 983 states have call successors, (984) [2022-07-20 03:50:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3975 states to 3975 states and 5731 transitions. [2022-07-20 03:50:18,508 INFO L78 Accepts]: Start accepts. Automaton has 3975 states and 5731 transitions. Word has length 188 [2022-07-20 03:50:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 03:50:18,508 INFO L495 AbstractCegarLoop]: Abstraction has 3975 states and 5731 transitions. [2022-07-20 03:50:18,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 11 states have internal predecessors, (89), 5 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2022-07-20 03:50:18,509 INFO L276 IsEmpty]: Start isEmpty. Operand 3975 states and 5731 transitions. [2022-07-20 03:50:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-20 03:50:18,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 03:50:18,519 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 03:50:18,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-20 03:50:18,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 03:50:18,736 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-20 03:50:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 03:50:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1730861329, now seen corresponding path program 1 times [2022-07-20 03:50:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 03:50:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843584344] [2022-07-20 03:50:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 03:50:18,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 03:50:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 03:50:18,740 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 03:50:18,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-20 03:50:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 03:50:20,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1922 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-20 03:50:20,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 03:50:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-20 03:50:22,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 03:50:22,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 03:50:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843584344] [2022-07-20 03:50:22,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843584344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 03:50:22,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 03:50:22,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-20 03:50:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939216309] [2022-07-20 03:50:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 03:50:22,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 03:50:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 03:50:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 03:50:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-20 03:50:22,987 INFO L87 Difference]: Start difference. First operand 3975 states and 5731 transitions. Second operand has 13 states, 12 states have (on average 8.583333333333334) internal successors, (103), 12 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24)