./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:29:44,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:29:44,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:29:44,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:29:44,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:29:44,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:29:44,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:29:44,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:29:44,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:29:44,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:29:44,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:29:44,147 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:29:44,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:29:44,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:29:44,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:29:44,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:29:44,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:29:44,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:29:44,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:29:44,166 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:29:44,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:29:44,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:29:44,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:29:44,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:29:44,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:29:44,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:29:44,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:29:44,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:29:44,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:29:44,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:29:44,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:29:44,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:29:44,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:29:44,199 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:29:44,200 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:29:44,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:29:44,201 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:29:44,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:29:44,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:29:44,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:29:44,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:29:44,205 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:29:44,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:29:44,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:29:44,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:29:44,250 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:29:44,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:29:44,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:29:44,255 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:29:44,255 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:29:44,255 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:29:44,256 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:29:44,256 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:29:44,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:29:44,256 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:29:44,256 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:29:44,257 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:29:44,257 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:29:44,257 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:29:44,257 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:29:44,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:29:44,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:29:44,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:29:44,259 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:29:44,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:29:44,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:29:44,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:29:44,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:29:44,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:29:44,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:29:44,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:29:44,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:29:44,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:29:44,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:29:44,261 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:29:44,261 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:29:44,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:29:44,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:29:44,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:29:44,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:29:44,272 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2021-11-21 01:29:44,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:29:44,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:29:44,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:29:44,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:29:44,577 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:29:44,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-21 01:29:44,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/data/9ec424fef/7b9782e8537c470ab03c054d35838050/FLAGafcb049e1 [2021-11-21 01:29:45,553 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:29:45,554 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-21 01:29:45,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/data/9ec424fef/7b9782e8537c470ab03c054d35838050/FLAGafcb049e1 [2021-11-21 01:29:45,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/data/9ec424fef/7b9782e8537c470ab03c054d35838050 [2021-11-21 01:29:45,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:29:45,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:29:45,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:45,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:29:45,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:29:45,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:45" (1/1) ... [2021-11-21 01:29:45,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@262f7528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:45, skipping insertion in model container [2021-11-21 01:29:45,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:29:45" (1/1) ... [2021-11-21 01:29:45,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:29:46,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:29:48,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-21 01:29:48,906 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-21 01:29:48,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-21 01:29:48,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-21 01:29:48,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:48,984 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:29:49,379 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-21 01:29:49,380 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-21 01:29:49,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-21 01:29:49,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-21 01:29:49,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:29:49,563 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:29:49,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49 WrapperNode [2021-11-21 01:29:49,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:29:49,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:29:49,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:29:49,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:29:49,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:49,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:49,923 INFO L137 Inliner]: procedures = 418, calls = 1969, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5220 [2021-11-21 01:29:49,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:29:49,925 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:29:49,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:29:49,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:29:49,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:49,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:49,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:49,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:50,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:50,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:50,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:50,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:29:50,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:29:50,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:29:50,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:29:50,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (1/1) ... [2021-11-21 01:29:50,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:29:50,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:29:50,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:29:50,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:29:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2021-11-21 01:29:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2021-11-21 01:29:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:29:50,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:29:50,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:29:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:29:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:29:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:29:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:29:50,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:29:50,275 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2021-11-21 01:29:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2021-11-21 01:29:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:29:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:29:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:29:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:29:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-21 01:29:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-21 01:29:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-21 01:29:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-21 01:29:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-21 01:29:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-21 01:29:50,277 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-21 01:29:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-21 01:29:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2021-11-21 01:29:50,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2021-11-21 01:29:50,278 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:29:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:29:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2021-11-21 01:29:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2021-11-21 01:29:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:29:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:29:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 01:29:50,279 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-21 01:29:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:29:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:29:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2021-11-21 01:29:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2021-11-21 01:29:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:29:50,280 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:29:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:29:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 01:29:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 01:29:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2021-11-21 01:29:50,283 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2021-11-21 01:29:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2021-11-21 01:29:50,284 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2021-11-21 01:29:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:29:50,284 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:29:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:29:50,284 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 01:29:50,284 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 01:29:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:29:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:29:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:29:50,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:29:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:29:50,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:29:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-21 01:29:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-21 01:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:29:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:29:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2021-11-21 01:29:50,287 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2021-11-21 01:29:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:29:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:29:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:29:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:29:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:29:50,288 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:29:50,288 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:29:50,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:29:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-21 01:29:50,289 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-21 01:29:50,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:29:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:29:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:29:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:29:50,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:29:50,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:29:50,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:29:50,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2021-11-21 01:29:50,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2021-11-21 01:29:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:29:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2021-11-21 01:29:50,292 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2021-11-21 01:29:50,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:29:50,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:29:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:29:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:29:50,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:29:50,293 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-21 01:29:50,293 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-21 01:29:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:29:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:29:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-21 01:29:50,294 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-21 01:29:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2021-11-21 01:29:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2021-11-21 01:29:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:29:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:29:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:29:50,296 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:29:50,296 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:29:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:29:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:29:50,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:29:50,300 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-21 01:29:50,301 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-21 01:29:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-21 01:29:50,302 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-21 01:29:50,302 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-21 01:29:50,303 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-21 01:29:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:29:50,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:29:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:29:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:29:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:29:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:29:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:29:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:29:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-21 01:29:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-21 01:29:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 01:29:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 01:29:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:29:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:29:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-21 01:29:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-21 01:29:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:29:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:29:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:29:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-21 01:29:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-21 01:29:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:29:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-21 01:29:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-21 01:29:50,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:29:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 01:29:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 01:29:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:29:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:29:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-21 01:29:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-21 01:29:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 01:29:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 01:29:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:29:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:29:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-21 01:29:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-21 01:29:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:29:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:29:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2021-11-21 01:29:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2021-11-21 01:29:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 01:29:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 01:29:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:29:50,315 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:29:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2021-11-21 01:29:50,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2021-11-21 01:29:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 01:29:50,316 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 01:29:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:29:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2021-11-21 01:29:50,316 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2021-11-21 01:29:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:29:50,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:29:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 01:29:50,317 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 01:29:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-21 01:29:50,317 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-21 01:29:50,317 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2021-11-21 01:29:50,318 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2021-11-21 01:29:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2021-11-21 01:29:50,318 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2021-11-21 01:29:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:29:50,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:29:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-21 01:29:50,318 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-21 01:29:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2021-11-21 01:29:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2021-11-21 01:29:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-21 01:29:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-21 01:29:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-21 01:29:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-21 01:29:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-21 01:29:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-21 01:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2021-11-21 01:29:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2021-11-21 01:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-21 01:29:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-21 01:29:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:29:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:29:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-21 01:29:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-21 01:29:51,211 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:29:51,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:29:51,358 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:29:54,909 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:29:55,028 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:29:56,017 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:29:56,017 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:29:56,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:29:56 BoogieIcfgContainer [2021-11-21 01:29:56,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:29:56,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:29:56,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:29:56,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:29:56,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:29:45" (1/3) ... [2021-11-21 01:29:56,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781c2321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:29:56, skipping insertion in model container [2021-11-21 01:29:56,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:29:49" (2/3) ... [2021-11-21 01:29:56,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@781c2321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:29:56, skipping insertion in model container [2021-11-21 01:29:56,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:29:56" (3/3) ... [2021-11-21 01:29:56,031 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-21 01:29:56,039 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:29:56,039 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:29:56,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:29:56,120 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:29:56,121 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:29:56,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2021-11-21 01:29:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-21 01:29:56,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:56,209 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:56,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:29:56,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1481671742, now seen corresponding path program 1 times [2021-11-21 01:29:56,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:56,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920553995] [2021-11-21 01:29:56,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:56,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-21 01:29:56,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:56,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920553995] [2021-11-21 01:29:56,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920553995] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:56,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:56,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:29:56,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041510296] [2021-11-21 01:29:56,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:56,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:29:56,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:56,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:29:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:29:56,892 INFO L87 Difference]: Start difference. First operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 01:29:58,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:29:58,601 INFO L93 Difference]: Finished difference Result 4182 states and 6195 transitions. [2021-11-21 01:29:58,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:29:58,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2021-11-21 01:29:58,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:29:58,643 INFO L225 Difference]: With dead ends: 4182 [2021-11-21 01:29:58,643 INFO L226 Difference]: Without dead ends: 2753 [2021-11-21 01:29:58,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:29:58,660 INFO L933 BasicCegarLoop]: 2263 mSDtfsCounter, 1973 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:29:58,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1973 Valid, 4038 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:29:58,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-11-21 01:29:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2749. [2021-11-21 01:29:58,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1648 states have (on average 1.3046116504854368) internal successors, (2150), 1675 states have internal predecessors, (2150), 922 states have call successors, (922), 177 states have call predecessors, (922), 176 states have return successors, (918), 914 states have call predecessors, (918), 918 states have call successors, (918) [2021-11-21 01:29:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3990 transitions. [2021-11-21 01:29:58,973 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3990 transitions. Word has length 71 [2021-11-21 01:29:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:29:58,974 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3990 transitions. [2021-11-21 01:29:58,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 01:29:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3990 transitions. [2021-11-21 01:29:58,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 01:29:58,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:29:58,986 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:29:58,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:29:58,987 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:29:58,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:29:58,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1350800671, now seen corresponding path program 1 times [2021-11-21 01:29:58,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:29:58,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689966767] [2021-11-21 01:29:58,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:29:58,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:29:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:29:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-21 01:29:59,239 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:29:59,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689966767] [2021-11-21 01:29:59,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689966767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:29:59,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:29:59,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:29:59,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282220823] [2021-11-21 01:29:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:29:59,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:29:59,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:29:59,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:29:59,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:29:59,243 INFO L87 Difference]: Start difference. First operand 2749 states and 3990 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 01:30:05,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:05,346 INFO L93 Difference]: Finished difference Result 7146 states and 10374 transitions. [2021-11-21 01:30:05,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:30:05,347 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2021-11-21 01:30:05,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:05,385 INFO L225 Difference]: With dead ends: 7146 [2021-11-21 01:30:05,386 INFO L226 Difference]: Without dead ends: 4408 [2021-11-21 01:30:05,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:30:05,399 INFO L933 BasicCegarLoop]: 2488 mSDtfsCounter, 6072 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 1971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6287 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 4744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1971 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:05,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6287 Valid, 4872 Invalid, 4744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1971 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 01:30:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-11-21 01:30:05,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4354. [2021-11-21 01:30:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 2660 states have (on average 1.3150375939849623) internal successors, (3498), 2703 states have internal predecessors, (3498), 1401 states have call successors, (1401), 293 states have call predecessors, (1401), 290 states have return successors, (1397), 1385 states have call predecessors, (1397), 1397 states have call successors, (1397) [2021-11-21 01:30:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6296 transitions. [2021-11-21 01:30:05,705 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6296 transitions. Word has length 79 [2021-11-21 01:30:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:05,706 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 6296 transitions. [2021-11-21 01:30:05,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 01:30:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6296 transitions. [2021-11-21 01:30:05,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-21 01:30:05,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:05,710 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:05,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:30:05,711 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:30:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash -692326567, now seen corresponding path program 1 times [2021-11-21 01:30:05,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:05,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89196445] [2021-11-21 01:30:05,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:05,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-21 01:30:05,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:05,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89196445] [2021-11-21 01:30:05,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89196445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:05,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:05,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:05,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725520002] [2021-11-21 01:30:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:05,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:05,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:05,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:05,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:05,847 INFO L87 Difference]: Start difference. First operand 4354 states and 6296 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 01:30:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:07,365 INFO L93 Difference]: Finished difference Result 10564 states and 15184 transitions. [2021-11-21 01:30:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:07,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2021-11-21 01:30:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:07,419 INFO L225 Difference]: With dead ends: 10564 [2021-11-21 01:30:07,419 INFO L226 Difference]: Without dead ends: 6221 [2021-11-21 01:30:07,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:07,439 INFO L933 BasicCegarLoop]: 2166 mSDtfsCounter, 1526 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:07,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 3946 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-21 01:30:07,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2021-11-21 01:30:07,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 6192. [2021-11-21 01:30:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 3767 states have (on average 1.3100610565436688) internal successors, (4935), 3834 states have internal predecessors, (4935), 1956 states have call successors, (1956), 471 states have call predecessors, (1956), 466 states have return successors, (1955), 1922 states have call predecessors, (1955), 1952 states have call successors, (1955) [2021-11-21 01:30:07,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 8846 transitions. [2021-11-21 01:30:07,915 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 8846 transitions. Word has length 81 [2021-11-21 01:30:07,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:07,915 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 8846 transitions. [2021-11-21 01:30:07,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-21 01:30:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 8846 transitions. [2021-11-21 01:30:07,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 01:30:07,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:07,918 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:07,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:30:07,919 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:30:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash 322112022, now seen corresponding path program 1 times [2021-11-21 01:30:07,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:07,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088641756] [2021-11-21 01:30:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:07,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-21 01:30:08,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:08,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088641756] [2021-11-21 01:30:08,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088641756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:08,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:08,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:08,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064290384] [2021-11-21 01:30:08,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:08,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:08,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:08,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:08,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:08,022 INFO L87 Difference]: Start difference. First operand 6192 states and 8846 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:30:09,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:09,886 INFO L93 Difference]: Finished difference Result 17274 states and 24595 transitions. [2021-11-21 01:30:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:09,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 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 79 [2021-11-21 01:30:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:09,983 INFO L225 Difference]: With dead ends: 17274 [2021-11-21 01:30:09,984 INFO L226 Difference]: Without dead ends: 11093 [2021-11-21 01:30:10,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:10,015 INFO L933 BasicCegarLoop]: 2226 mSDtfsCounter, 1839 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:10,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 3992 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:30:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11093 states. [2021-11-21 01:30:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11093 to 11055. [2021-11-21 01:30:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11055 states, 6720 states have (on average 1.2983630952380953) internal successors, (8725), 6855 states have internal predecessors, (8725), 3450 states have call successors, (3450), 891 states have call predecessors, (3450), 882 states have return successors, (3452), 3371 states have call predecessors, (3452), 3446 states have call successors, (3452) [2021-11-21 01:30:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11055 states to 11055 states and 15627 transitions. [2021-11-21 01:30:10,730 INFO L78 Accepts]: Start accepts. Automaton has 11055 states and 15627 transitions. Word has length 79 [2021-11-21 01:30:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:10,730 INFO L470 AbstractCegarLoop]: Abstraction has 11055 states and 15627 transitions. [2021-11-21 01:30:10,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:30:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 11055 states and 15627 transitions. [2021-11-21 01:30:10,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:30:10,749 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:10,749 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:10,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:30:10,750 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:30:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:10,754 INFO L85 PathProgramCache]: Analyzing trace with hash 734917167, now seen corresponding path program 1 times [2021-11-21 01:30:10,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:10,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269474815] [2021-11-21 01:30:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:10,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-21 01:30:10,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:10,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269474815] [2021-11-21 01:30:10,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269474815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:10,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:10,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:10,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580922746] [2021-11-21 01:30:10,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:10,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:10,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:10,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:10,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:10,913 INFO L87 Difference]: Start difference. First operand 11055 states and 15627 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:30:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:12,981 INFO L93 Difference]: Finished difference Result 31847 states and 44972 transitions. [2021-11-21 01:30:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:12,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 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 80 [2021-11-21 01:30:12,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:13,096 INFO L225 Difference]: With dead ends: 31847 [2021-11-21 01:30:13,097 INFO L226 Difference]: Without dead ends: 20803 [2021-11-21 01:30:13,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:13,149 INFO L933 BasicCegarLoop]: 2415 mSDtfsCounter, 1946 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:13,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1946 Valid, 4181 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:30:13,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20803 states. [2021-11-21 01:30:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20803 to 20765. [2021-11-21 01:30:14,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20765 states, 12664 states have (on average 1.2884554643082755) internal successors, (16317), 12936 states have internal predecessors, (16317), 6410 states have call successors, (6410), 1705 states have call predecessors, (6410), 1688 states have return successors, (6418), 6241 states have call predecessors, (6418), 6406 states have call successors, (6418) [2021-11-21 01:30:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20765 states to 20765 states and 29145 transitions. [2021-11-21 01:30:14,409 INFO L78 Accepts]: Start accepts. Automaton has 20765 states and 29145 transitions. Word has length 80 [2021-11-21 01:30:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:14,410 INFO L470 AbstractCegarLoop]: Abstraction has 20765 states and 29145 transitions. [2021-11-21 01:30:14,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-21 01:30:14,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20765 states and 29145 transitions. [2021-11-21 01:30:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-21 01:30:14,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:14,418 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 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] [2021-11-21 01:30:14,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:30:14,419 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:30:14,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:14,420 INFO L85 PathProgramCache]: Analyzing trace with hash -33063383, now seen corresponding path program 1 times [2021-11-21 01:30:14,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:14,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177405675] [2021-11-21 01:30:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:14,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-21 01:30:14,568 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:14,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177405675] [2021-11-21 01:30:14,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177405675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:14,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:14,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:14,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677096] [2021-11-21 01:30:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:14,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:14,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:14,570 INFO L87 Difference]: Start difference. First operand 20765 states and 29145 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 01:30:16,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:16,883 INFO L93 Difference]: Finished difference Result 57638 states and 80900 transitions. [2021-11-21 01:30:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:16,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2021-11-21 01:30:16,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:17,067 INFO L225 Difference]: With dead ends: 57638 [2021-11-21 01:30:17,068 INFO L226 Difference]: Without dead ends: 36884 [2021-11-21 01:30:17,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:17,142 INFO L933 BasicCegarLoop]: 2632 mSDtfsCounter, 1838 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:17,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 4371 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-21 01:30:17,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36884 states. [2021-11-21 01:30:19,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36884 to 36834. [2021-11-21 01:30:19,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36834 states, 22417 states have (on average 1.2840701253512958) internal successors, (28785), 22967 states have internal predecessors, (28785), 11412 states have call successors, (11412), 3067 states have call predecessors, (11412), 3002 states have return successors, (11440), 11019 states have call predecessors, (11440), 11408 states have call successors, (11440) [2021-11-21 01:30:19,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36834 states to 36834 states and 51637 transitions. [2021-11-21 01:30:19,740 INFO L78 Accepts]: Start accepts. Automaton has 36834 states and 51637 transitions. Word has length 92 [2021-11-21 01:30:19,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:19,742 INFO L470 AbstractCegarLoop]: Abstraction has 36834 states and 51637 transitions. [2021-11-21 01:30:19,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 01:30:19,742 INFO L276 IsEmpty]: Start isEmpty. Operand 36834 states and 51637 transitions. [2021-11-21 01:30:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-21 01:30:19,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:19,745 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:19,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:30:19,745 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:30:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash 602146562, now seen corresponding path program 1 times [2021-11-21 01:30:19,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265126755] [2021-11-21 01:30:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:19,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-21 01:30:19,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:19,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265126755] [2021-11-21 01:30:19,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265126755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:19,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:19,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:19,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021216143] [2021-11-21 01:30:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:19,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:19,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:19,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:19,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:19,992 INFO L87 Difference]: Start difference. First operand 36834 states and 51637 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-21 01:30:22,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:22,182 INFO L93 Difference]: Finished difference Result 73636 states and 103279 transitions. [2021-11-21 01:30:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:22,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 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 122 [2021-11-21 01:30:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:22,360 INFO L225 Difference]: With dead ends: 73636 [2021-11-21 01:30:22,361 INFO L226 Difference]: Without dead ends: 36882 [2021-11-21 01:30:22,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:22,457 INFO L933 BasicCegarLoop]: 1796 mSDtfsCounter, 0 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:22,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3590 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:30:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36882 states. [2021-11-21 01:30:24,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36882 to 36882. [2021-11-21 01:30:24,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36882 states, 22465 states have (on average 1.283463164923214) internal successors, (28833), 23015 states have internal predecessors, (28833), 11412 states have call successors, (11412), 3067 states have call predecessors, (11412), 3002 states have return successors, (11440), 11019 states have call predecessors, (11440), 11408 states have call successors, (11440) [2021-11-21 01:30:24,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36882 states to 36882 states and 51685 transitions. [2021-11-21 01:30:24,268 INFO L78 Accepts]: Start accepts. Automaton has 36882 states and 51685 transitions. Word has length 122 [2021-11-21 01:30:24,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:24,269 INFO L470 AbstractCegarLoop]: Abstraction has 36882 states and 51685 transitions. [2021-11-21 01:30:24,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-21 01:30:24,269 INFO L276 IsEmpty]: Start isEmpty. Operand 36882 states and 51685 transitions. [2021-11-21 01:30:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-21 01:30:24,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:24,272 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:24,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:30:24,272 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:30:24,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash 838275709, now seen corresponding path program 1 times [2021-11-21 01:30:24,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:24,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273773916] [2021-11-21 01:30:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:24,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-21 01:30:24,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273773916] [2021-11-21 01:30:24,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273773916] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:30:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328873807] [2021-11-21 01:30:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:24,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:24,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:24,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06a1b7c5-3656-47c3-91b0-8f652e30955e/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:30:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:25,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:30:25,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:25,594 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-21 01:30:25,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-21 01:30:25,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328873807] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:25,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [630840242] [2021-11-21 01:30:25,963 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-21 01:30:25,964 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:25,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:25,973 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:25,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:31,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 57 [2021-11-21 01:30:34,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-21 01:30:35,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41