./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.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_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/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_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/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_99582a72-5636-4965-9132-38a2f3d20504/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 eed79abab256f81f1863cfddb0c42a9b6564cf98ca16b371152af6fd281f627c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:45:42,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:45:42,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:45:42,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:45:42,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:45:42,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:45:42,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:45:42,161 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:45:42,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:45:42,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:45:42,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:45:42,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:45:42,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:45:42,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:45:42,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:45:42,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:45:42,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:45:42,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:45:42,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:45:42,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:45:42,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:45:42,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:45:42,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:45:42,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:45:42,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:45:42,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:45:42,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:45:42,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:45:42,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:45:42,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:45:42,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:45:42,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:45:42,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:45:42,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:45:42,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:45:42,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:45:42,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:45:42,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:45:42,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:45:42,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:45:42,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:45:42,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:45:42,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:45:42,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:45:42,239 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:45:42,239 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:45:42,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:45:42,240 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:45:42,241 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:45:42,241 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:45:42,241 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:45:42,241 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:45:42,242 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:45:42,242 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:45:42,242 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:45:42,242 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:45:42,243 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:45:42,243 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:45:42,243 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:45:42,244 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:45:42,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:45:42,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:45:42,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:45:42,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:45:42,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:45:42,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:45:42,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:45:42,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:45:42,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:45:42,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:45:42,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:45:42,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:45:42,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:45:42,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:45:42,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:45:42,249 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:45:42,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:45:42,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:45:42,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:45:42,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:45:42,250 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_99582a72-5636-4965-9132-38a2f3d20504/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eed79abab256f81f1863cfddb0c42a9b6564cf98ca16b371152af6fd281f627c [2021-11-21 01:45:42,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:45:42,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:45:42,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:45:42,557 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:45:42,558 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:45:42,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-21 01:45:42,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/data/7d73ce5cc/296df24d09844f8b82b144103d8046b3/FLAG0d02891c0 [2021-11-21 01:45:43,728 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:45:43,728 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-21 01:45:43,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/data/7d73ce5cc/296df24d09844f8b82b144103d8046b3/FLAG0d02891c0 [2021-11-21 01:45:43,997 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/data/7d73ce5cc/296df24d09844f8b82b144103d8046b3 [2021-11-21 01:45:43,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:45:44,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:45:44,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:45:44,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:45:44,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:45:44,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:43" (1/1) ... [2021-11-21 01:45:44,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74010190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:44, skipping insertion in model container [2021-11-21 01:45:44,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:45:43" (1/1) ... [2021-11-21 01:45:44,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:45:44,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:45:48,326 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[462950,462963] [2021-11-21 01:45:48,329 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463119,463132] [2021-11-21 01:45:48,330 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463286,463299] [2021-11-21 01:45:48,330 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463454,463467] [2021-11-21 01:45:48,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:45:48,417 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:45:48,970 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[462950,462963] [2021-11-21 01:45:48,971 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463119,463132] [2021-11-21 01:45:48,972 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463286,463299] [2021-11-21 01:45:48,972 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_99582a72-5636-4965-9132-38a2f3d20504/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463454,463467] [2021-11-21 01:45:48,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:45:49,352 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:45:49,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49 WrapperNode [2021-11-21 01:45:49,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:45:49,356 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:45:49,356 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:45:49,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:45:49,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:49,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:49,837 INFO L137 Inliner]: procedures = 566, calls = 4373, calls flagged for inlining = 270, calls inlined = 248, statements flattened = 8973 [2021-11-21 01:45:49,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:45:49,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:45:49,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:45:49,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:45:49,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:49,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:49,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:49,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:50,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:50,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:50,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:50,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:45:50,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:45:50,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:45:50,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:45:50,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (1/1) ... [2021-11-21 01:45:50,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:45:50,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:45:50,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:45:50,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99582a72-5636-4965-9132-38a2f3d20504/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:45:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-21 01:45:50,390 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-21 01:45:50,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 01:45:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 01:45:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-21 01:45:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-21 01:45:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-21 01:45:50,391 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-21 01:45:50,391 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-11-21 01:45:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-11-21 01:45:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 01:45:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 01:45:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-21 01:45:50,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-21 01:45:50,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 01:45:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 01:45:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 01:45:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 01:45:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-11-21 01:45:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-11-21 01:45:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_82 [2021-11-21 01:45:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_82 [2021-11-21 01:45:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-11-21 01:45:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-11-21 01:45:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:45:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 01:45:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-21 01:45:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-21 01:45:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-11-21 01:45:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-11-21 01:45:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-21 01:45:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-21 01:45:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 01:45:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 01:45:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-21 01:45:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-21 01:45:50,396 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-11-21 01:45:50,396 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-11-21 01:45:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-21 01:45:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-21 01:45:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2021-11-21 01:45:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2021-11-21 01:45:50,397 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-21 01:45:50,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-21 01:45:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 01:45:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 01:45:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-21 01:45:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-21 01:45:50,398 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-21 01:45:50,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-21 01:45:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-11-21 01:45:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-11-21 01:45:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-21 01:45:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-21 01:45:50,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 01:45:50,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 01:45:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 01:45:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 01:45:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 01:45:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 01:45:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-21 01:45:50,400 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-21 01:45:50,400 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-21 01:45:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-21 01:45:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-21 01:45:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-21 01:45:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 01:45:50,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 01:45:50,401 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-21 01:45:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-21 01:45:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:45:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:45:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-21 01:45:50,402 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-21 01:45:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:45:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-11-21 01:45:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-11-21 01:45:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-21 01:45:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-21 01:45:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 01:45:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 01:45:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:45:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:45:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 01:45:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-11-21 01:45:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-11-21 01:45:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-21 01:45:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-21 01:45:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-11-21 01:45:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-11-21 01:45:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-21 01:45:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-21 01:45:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-21 01:45:50,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-21 01:45:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 01:45:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 01:45:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 01:45:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 01:45:50,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 01:45:50,406 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:45:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-11-21 01:45:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-11-21 01:45:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-21 01:45:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-21 01:45:50,407 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-21 01:45:50,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-21 01:45:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 01:45:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 01:45:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-21 01:45:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-21 01:45:50,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 01:45:50,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 01:45:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 01:45:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 01:45:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-11-21 01:45:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-11-21 01:45:50,409 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-21 01:45:50,409 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-21 01:45:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-21 01:45:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-21 01:45:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-21 01:45:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-21 01:45:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-11-21 01:45:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-11-21 01:45:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-21 01:45:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-21 01:45:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-11-21 01:45:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-11-21 01:45:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:45:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 01:45:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:45:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 01:45:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 01:45:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-21 01:45:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-21 01:45:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 01:45:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 01:45:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 01:45:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 01:45:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-21 01:45:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-21 01:45:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-21 01:45:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-21 01:45:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:45:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 01:45:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 01:45:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-21 01:45:50,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-21 01:45:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:45:50,414 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 01:45:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 01:45:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:45:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:45:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-21 01:45:50,415 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-21 01:45:50,415 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:45:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 01:45:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-11-21 01:45:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-11-21 01:45:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-21 01:45:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-21 01:45:50,416 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-11-21 01:45:50,416 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-11-21 01:45:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 01:45:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 01:45:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:45:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-21 01:45:50,417 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-11-21 01:45:50,417 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-11-21 01:45:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2021-11-21 01:45:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2021-11-21 01:45:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 01:45:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 01:45:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-11-21 01:45:50,418 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-11-21 01:45:50,418 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-21 01:45:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-21 01:45:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 01:45:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 01:45:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-11-21 01:45:50,419 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-11-21 01:45:50,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-21 01:45:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-21 01:45:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-21 01:45:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-21 01:45:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-11-21 01:45:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-11-21 01:45:50,420 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-21 01:45:50,420 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-21 01:45:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-11-21 01:45:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-11-21 01:45:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-21 01:45:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-21 01:45:50,421 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-11-21 01:45:50,421 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-11-21 01:45:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-11-21 01:45:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-11-21 01:45:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-21 01:45:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-21 01:45:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:45:50,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:45:50,422 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-11-21 01:45:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-11-21 01:45:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 01:45:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:45:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 01:45:50,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 01:45:50,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:45:50,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 01:45:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-21 01:45:50,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-21 01:45:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-21 01:45:50,424 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-21 01:45:50,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-21 01:45:50,424 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-21 01:45:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 01:45:50,425 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 01:45:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-21 01:45:50,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-21 01:45:50,425 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-21 01:45:50,425 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-21 01:45:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-21 01:45:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-21 01:45:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:45:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-21 01:45:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-21 01:45:50,426 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 01:45:50,426 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 01:45:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:45:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-11-21 01:45:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-11-21 01:45:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-11-21 01:45:50,427 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-11-21 01:45:50,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_81 [2021-11-21 01:45:50,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_81 [2021-11-21 01:45:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:45:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:45:50,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-21 01:45:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-21 01:45:50,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-21 01:45:50,428 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 01:45:50,429 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 01:45:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 01:45:50,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 01:45:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 01:45:50,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 01:45:50,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_108 [2021-11-21 01:45:50,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_108 [2021-11-21 01:45:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-21 01:45:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-21 01:45:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-21 01:45:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-21 01:45:50,430 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_89 [2021-11-21 01:45:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_89 [2021-11-21 01:45:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_88 [2021-11-21 01:45:50,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_88 [2021-11-21 01:45:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-11-21 01:45:50,431 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-11-21 01:45:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-21 01:45:50,431 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-21 01:45:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-21 01:45:50,432 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-21 01:45:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-11-21 01:45:50,432 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-11-21 01:45:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-21 01:45:50,432 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-21 01:45:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-21 01:45:50,432 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-21 01:45:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-21 01:45:50,433 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-21 01:45:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 01:45:50,433 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 01:45:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-11-21 01:45:50,433 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-11-21 01:45:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:45:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-11-21 01:45:50,434 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-11-21 01:45:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-21 01:45:50,434 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-21 01:45:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-21 01:45:50,434 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-21 01:45:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 01:45:50,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 01:45:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-11-21 01:45:50,435 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-11-21 01:45:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-11-21 01:45:50,435 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-11-21 01:45:50,435 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:45:50,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-21 01:45:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_109 [2021-11-21 01:45:50,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_109 [2021-11-21 01:45:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_94 [2021-11-21 01:45:50,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_94 [2021-11-21 01:45:50,436 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-21 01:45:50,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-21 01:45:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_90 [2021-11-21 01:45:50,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_90 [2021-11-21 01:45:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-21 01:45:50,437 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-21 01:45:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-11-21 01:45:50,437 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-11-21 01:45:50,437 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-11-21 01:45:50,438 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-11-21 01:45:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 01:45:50,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 01:45:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-21 01:45:50,438 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-21 01:45:50,438 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-21 01:45:50,438 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-21 01:45:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-21 01:45:50,439 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-21 01:45:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-21 01:45:50,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-21 01:45:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:45:50,439 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:45:50,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:45:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 01:45:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 01:45:50,440 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-21 01:45:50,440 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-21 01:45:51,540 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:45:51,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:45:53,066 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 01:45:59,458 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 01:45:59,570 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:46:02,522 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:46:02,523 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:46:02,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:02 BoogieIcfgContainer [2021-11-21 01:46:02,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:46:02,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:46:02,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:46:02,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:46:02,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:45:43" (1/3) ... [2021-11-21 01:46:02,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b82d3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:02, skipping insertion in model container [2021-11-21 01:46:02,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:45:49" (2/3) ... [2021-11-21 01:46:02,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b82d3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:46:02, skipping insertion in model container [2021-11-21 01:46:02,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:46:02" (3/3) ... [2021-11-21 01:46:02,540 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-21 01:46:02,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:46:02,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 01:46:02,622 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:46:02,637 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 01:46:02,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 01:46:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 2282 states, 1327 states have (on average 1.333835719668425) internal successors, (1770), 1398 states have internal predecessors, (1770), 801 states have call successors, (801), 152 states have call predecessors, (801), 151 states have return successors, (792), 777 states have call predecessors, (792), 792 states have call successors, (792) [2021-11-21 01:46:02,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-21 01:46:02,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:02,734 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:02,734 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 01:46:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 421145606, now seen corresponding path program 1 times [2021-11-21 01:46:02,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:02,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973440161] [2021-11-21 01:46:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:02,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:03,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 01:46:03,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:03,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973440161] [2021-11-21 01:46:03,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973440161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:03,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:03,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:03,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262408952] [2021-11-21 01:46:03,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:03,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:03,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:03,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:03,836 INFO L87 Difference]: Start difference. First operand has 2282 states, 1327 states have (on average 1.333835719668425) internal successors, (1770), 1398 states have internal predecessors, (1770), 801 states have call successors, (801), 152 states have call predecessors, (801), 151 states have return successors, (792), 777 states have call predecessors, (792), 792 states have call successors, (792) 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:46:06,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:08,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:11,353 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:12,426 INFO L93 Difference]: Finished difference Result 6567 states and 10061 transitions. [2021-11-21 01:46:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:12,431 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2021-11-21 01:46:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:12,485 INFO L225 Difference]: With dead ends: 6567 [2021-11-21 01:46:12,485 INFO L226 Difference]: Without dead ends: 4307 [2021-11-21 01:46:12,514 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 01:46:12,522 INFO L933 BasicCegarLoop]: 3616 mSDtfsCounter, 3025 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3027 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:12,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3027 Valid, 6471 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 929 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-11-21 01:46:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2021-11-21 01:46:12,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4301. [2021-11-21 01:46:12,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4301 states, 2517 states have (on average 1.3289630512514898) internal successors, (3345), 2654 states have internal predecessors, (3345), 1483 states have call successors, (1483), 299 states have call predecessors, (1483), 298 states have return successors, (1481), 1449 states have call predecessors, (1481), 1479 states have call successors, (1481) [2021-11-21 01:46:12,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 6309 transitions. [2021-11-21 01:46:12,950 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 6309 transitions. Word has length 192 [2021-11-21 01:46:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:12,952 INFO L470 AbstractCegarLoop]: Abstraction has 4301 states and 6309 transitions. [2021-11-21 01:46:12,952 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, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:46:12,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 6309 transitions. [2021-11-21 01:46:12,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-21 01:46:12,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:12,960 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:12,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:46:12,961 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 01:46:12,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:12,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1611409990, now seen corresponding path program 1 times [2021-11-21 01:46:12,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:12,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926592737] [2021-11-21 01:46:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:12,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:13,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 01:46:13,285 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:13,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926592737] [2021-11-21 01:46:13,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926592737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:13,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:13,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:13,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866138362] [2021-11-21 01:46:13,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:13,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:13,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:13,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:13,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:13,289 INFO L87 Difference]: Start difference. First operand 4301 states and 6309 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:46:15,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:17,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:21,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:23,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:23,061 INFO L93 Difference]: Finished difference Result 12464 states and 18352 transitions. [2021-11-21 01:46:23,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:23,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 200 [2021-11-21 01:46:23,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:23,377 INFO L225 Difference]: With dead ends: 12464 [2021-11-21 01:46:23,377 INFO L226 Difference]: Without dead ends: 8198 [2021-11-21 01:46:23,411 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 01:46:23,413 INFO L933 BasicCegarLoop]: 3641 mSDtfsCounter, 2989 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2991 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:23,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2991 Valid, 6471 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 912 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-11-21 01:46:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8198 states. [2021-11-21 01:46:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8198 to 8165. [2021-11-21 01:46:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8165 states, 4782 states have (on average 1.3274780426599748) internal successors, (6348), 5040 states have internal predecessors, (6348), 2794 states have call successors, (2794), 591 states have call predecessors, (2794), 586 states have return successors, (2908), 2715 states have call predecessors, (2908), 2790 states have call successors, (2908) [2021-11-21 01:46:24,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8165 states to 8165 states and 12050 transitions. [2021-11-21 01:46:24,045 INFO L78 Accepts]: Start accepts. Automaton has 8165 states and 12050 transitions. Word has length 200 [2021-11-21 01:46:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:24,046 INFO L470 AbstractCegarLoop]: Abstraction has 8165 states and 12050 transitions. [2021-11-21 01:46:24,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-21 01:46:24,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8165 states and 12050 transitions. [2021-11-21 01:46:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-21 01:46:24,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:24,053 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:24,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:46:24,054 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 01:46:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:24,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1190852295, now seen corresponding path program 1 times [2021-11-21 01:46:24,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:24,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731463155] [2021-11-21 01:46:24,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:24,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 01:46:24,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:24,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731463155] [2021-11-21 01:46:24,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731463155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:24,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:24,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:24,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799579921] [2021-11-21 01:46:24,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:24,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:24,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:24,435 INFO L87 Difference]: Start difference. First operand 8165 states and 12050 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:46:28,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:30,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:33,153 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:35,917 INFO L93 Difference]: Finished difference Result 20054 states and 29542 transitions. [2021-11-21 01:46:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:35,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 209 [2021-11-21 01:46:35,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:36,052 INFO L225 Difference]: With dead ends: 20054 [2021-11-21 01:46:36,052 INFO L226 Difference]: Without dead ends: 11924 [2021-11-21 01:46:36,103 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 01:46:36,109 INFO L933 BasicCegarLoop]: 3579 mSDtfsCounter, 2898 mSDsluCounter, 3281 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 6419 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:36,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 6419 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 964 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2021-11-21 01:46:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11924 states. [2021-11-21 01:46:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11924 to 11891. [2021-11-21 01:46:36,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11891 states, 6971 states have (on average 1.3207574236121074) internal successors, (9207), 7350 states have internal predecessors, (9207), 4032 states have call successors, (4032), 892 states have call predecessors, (4032), 885 states have return successors, (4202), 3907 states have call predecessors, (4202), 4028 states have call successors, (4202) [2021-11-21 01:46:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11891 states to 11891 states and 17441 transitions. [2021-11-21 01:46:36,846 INFO L78 Accepts]: Start accepts. Automaton has 11891 states and 17441 transitions. Word has length 209 [2021-11-21 01:46:36,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:36,848 INFO L470 AbstractCegarLoop]: Abstraction has 11891 states and 17441 transitions. [2021-11-21 01:46:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:46:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11891 states and 17441 transitions. [2021-11-21 01:46:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-21 01:46:36,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:36,857 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:46:36,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:46:36,858 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 01:46:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:36,858 INFO L85 PathProgramCache]: Analyzing trace with hash -21630216, now seen corresponding path program 1 times [2021-11-21 01:46:36,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:36,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254481598] [2021-11-21 01:46:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:36,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:37,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-21 01:46:37,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:37,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254481598] [2021-11-21 01:46:37,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254481598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:37,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:37,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:37,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577901591] [2021-11-21 01:46:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:37,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:37,435 INFO L87 Difference]: Start difference. First operand 11891 states and 17441 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:46:40,853 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:43,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:45,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:45,255 INFO L93 Difference]: Finished difference Result 34358 states and 50354 transitions. [2021-11-21 01:46:45,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:45,258 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), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 210 [2021-11-21 01:46:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:45,385 INFO L225 Difference]: With dead ends: 34358 [2021-11-21 01:46:45,386 INFO L226 Difference]: Without dead ends: 22502 [2021-11-21 01:46:45,433 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 01:46:45,434 INFO L933 BasicCegarLoop]: 4149 mSDtfsCounter, 2843 mSDsluCounter, 3240 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2845 SdHoareTripleChecker+Valid, 6966 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:45,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2845 Valid, 6966 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1092 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 01:46:45,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22502 states. [2021-11-21 01:46:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22502 to 22453. [2021-11-21 01:46:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22453 states, 13140 states have (on average 1.312785388127854) internal successors, (17250), 13882 states have internal predecessors, (17250), 7608 states have call successors, (7608), 1715 states have call predecessors, (7608), 1702 states have return successors, (7880), 7361 states have call predecessors, (7880), 7604 states have call successors, (7880) [2021-11-21 01:46:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22453 states to 22453 states and 32738 transitions. [2021-11-21 01:46:47,004 INFO L78 Accepts]: Start accepts. Automaton has 22453 states and 32738 transitions. Word has length 210 [2021-11-21 01:46:47,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:47,005 INFO L470 AbstractCegarLoop]: Abstraction has 22453 states and 32738 transitions. [2021-11-21 01:46:47,005 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), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-21 01:46:47,005 INFO L276 IsEmpty]: Start isEmpty. Operand 22453 states and 32738 transitions. [2021-11-21 01:46:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-21 01:46:47,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:47,010 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:47,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:46:47,011 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 01:46:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -9175031, now seen corresponding path program 1 times [2021-11-21 01:46:47,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:47,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530616794] [2021-11-21 01:46:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:47,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:47,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2021-11-21 01:46:47,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:47,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530616794] [2021-11-21 01:46:47,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530616794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:47,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:47,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:47,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38877270] [2021-11-21 01:46:47,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:47,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:47,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:47,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:47,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:47,367 INFO L87 Difference]: Start difference. First operand 22453 states and 32738 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:46:48,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:53,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:55,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:46:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:46:56,008 INFO L93 Difference]: Finished difference Result 55699 states and 80702 transitions. [2021-11-21 01:46:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:46:56,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 210 [2021-11-21 01:46:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:46:56,333 INFO L225 Difference]: With dead ends: 55699 [2021-11-21 01:46:56,333 INFO L226 Difference]: Without dead ends: 33281 [2021-11-21 01:46:56,431 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 01:46:56,432 INFO L933 BasicCegarLoop]: 3581 mSDtfsCounter, 2943 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2943 SdHoareTripleChecker+Valid, 6377 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:46:56,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2943 Valid, 6377 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 953 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-21 01:46:56,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33281 states. [2021-11-21 01:46:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33281 to 33233. [2021-11-21 01:46:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33233 states, 19381 states have (on average 1.2964243331097467) internal successors, (25126), 20444 states have internal predecessors, (25126), 11150 states have call successors, (11150), 2734 states have call predecessors, (11150), 2699 states have return successors, (11622), 10752 states have call predecessors, (11622), 11146 states have call successors, (11622) [2021-11-21 01:46:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33233 states to 33233 states and 47898 transitions. [2021-11-21 01:46:58,445 INFO L78 Accepts]: Start accepts. Automaton has 33233 states and 47898 transitions. Word has length 210 [2021-11-21 01:46:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:46:58,451 INFO L470 AbstractCegarLoop]: Abstraction has 33233 states and 47898 transitions. [2021-11-21 01:46:58,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:46:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 33233 states and 47898 transitions. [2021-11-21 01:46:58,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-21 01:46:58,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:46:58,458 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:46:58,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:46:58,459 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 01:46:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:46:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1018920295, now seen corresponding path program 1 times [2021-11-21 01:46:58,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:46:58,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033737691] [2021-11-21 01:46:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:46:58,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:46:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:46:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-11-21 01:46:58,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:46:58,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033737691] [2021-11-21 01:46:58,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033737691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:46:58,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:46:58,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:46:58,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762373816] [2021-11-21 01:46:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:46:58,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:46:58,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:46:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:46:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:46:58,961 INFO L87 Difference]: Start difference. First operand 33233 states and 47898 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:47:01,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:04,178 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:05,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:08,465 INFO L93 Difference]: Finished difference Result 88104 states and 127135 transitions. [2021-11-21 01:47:08,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:47:08,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 230 [2021-11-21 01:47:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:09,053 INFO L225 Difference]: With dead ends: 88104 [2021-11-21 01:47:09,053 INFO L226 Difference]: Without dead ends: 54906 [2021-11-21 01:47:09,167 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 01:47:09,169 INFO L933 BasicCegarLoop]: 3884 mSDtfsCounter, 3185 mSDsluCounter, 3292 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3185 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:09,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3185 Valid, 6732 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1018 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-21 01:47:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54906 states. [2021-11-21 01:47:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54906 to 54823. [2021-11-21 01:47:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54823 states, 32008 states have (on average 1.2959885028742815) internal successors, (41482), 33824 states have internal predecessors, (41482), 18358 states have call successors, (18358), 4515 states have call predecessors, (18358), 4454 states have return successors, (19186), 17650 states have call predecessors, (19186), 18354 states have call successors, (19186) [2021-11-21 01:47:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54823 states to 54823 states and 79026 transitions. [2021-11-21 01:47:12,335 INFO L78 Accepts]: Start accepts. Automaton has 54823 states and 79026 transitions. Word has length 230 [2021-11-21 01:47:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:12,338 INFO L470 AbstractCegarLoop]: Abstraction has 54823 states and 79026 transitions. [2021-11-21 01:47:12,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 01:47:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 54823 states and 79026 transitions. [2021-11-21 01:47:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-21 01:47:12,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:12,348 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:12,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:47:12,348 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 01:47:12,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1281098224, now seen corresponding path program 1 times [2021-11-21 01:47:12,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:12,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913538596] [2021-11-21 01:47:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:12,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:12,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-21 01:47:12,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:12,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913538596] [2021-11-21 01:47:12,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913538596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:12,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:12,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:47:12,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073289627] [2021-11-21 01:47:12,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:12,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:12,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:12,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:12,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:12,844 INFO L87 Difference]: Start difference. First operand 54823 states and 79026 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:47:15,392 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:18,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:20,101 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:24,355 INFO L93 Difference]: Finished difference Result 56913 states and 81685 transitions. [2021-11-21 01:47:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:47:24,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 236 [2021-11-21 01:47:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:24,619 INFO L225 Difference]: With dead ends: 56913 [2021-11-21 01:47:24,619 INFO L226 Difference]: Without dead ends: 56911 [2021-11-21 01:47:24,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:47:24,641 INFO L933 BasicCegarLoop]: 3092 mSDtfsCounter, 3037 mSDsluCounter, 7987 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 10021 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:24,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3052 Valid, 10021 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1545 Invalid, 1 Unknown, 0 Unchecked, 10.1s Time] [2021-11-21 01:47:24,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56911 states. [2021-11-21 01:47:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56911 to 56739. [2021-11-21 01:47:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56739 states, 33039 states have (on average 1.2928054723205908) internal successors, (42713), 34913 states have internal predecessors, (42713), 18962 states have call successors, (18962), 4780 states have call predecessors, (18962), 4735 states have return successors, (19806), 18250 states have call predecessors, (19806), 18958 states have call successors, (19806) [2021-11-21 01:47:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56739 states to 56739 states and 81481 transitions. [2021-11-21 01:47:27,136 INFO L78 Accepts]: Start accepts. Automaton has 56739 states and 81481 transitions. Word has length 236 [2021-11-21 01:47:27,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:27,137 INFO L470 AbstractCegarLoop]: Abstraction has 56739 states and 81481 transitions. [2021-11-21 01:47:27,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:47:27,137 INFO L276 IsEmpty]: Start isEmpty. Operand 56739 states and 81481 transitions. [2021-11-21 01:47:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-21 01:47:27,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:27,143 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:27,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 01:47:27,144 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 01:47:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1209280520, now seen corresponding path program 1 times [2021-11-21 01:47:27,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:27,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801333888] [2021-11-21 01:47:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:27,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2021-11-21 01:47:27,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:27,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801333888] [2021-11-21 01:47:27,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801333888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:27,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:27,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:47:27,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208344994] [2021-11-21 01:47:27,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:27,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:27,726 INFO L87 Difference]: Start difference. First operand 56739 states and 81481 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:47:30,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:32,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:37,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:37,509 INFO L93 Difference]: Finished difference Result 56749 states and 81488 transitions. [2021-11-21 01:47:37,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:47:37,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 240 [2021-11-21 01:47:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:37,788 INFO L225 Difference]: With dead ends: 56749 [2021-11-21 01:47:37,788 INFO L226 Difference]: Without dead ends: 56747 [2021-11-21 01:47:37,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:47:37,819 INFO L933 BasicCegarLoop]: 3095 mSDtfsCounter, 3033 mSDsluCounter, 7984 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 10024 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:37,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3047 Valid, 10024 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1541 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 01:47:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56747 states. [2021-11-21 01:47:40,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56747 to 56743. [2021-11-21 01:47:40,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56743 states, 33042 states have (on average 1.292778887476545) internal successors, (42716), 34916 states have internal predecessors, (42716), 18962 states have call successors, (18962), 4781 states have call predecessors, (18962), 4736 states have return successors, (19806), 18250 states have call predecessors, (19806), 18958 states have call successors, (19806) [2021-11-21 01:47:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56743 states to 56743 states and 81484 transitions. [2021-11-21 01:47:40,494 INFO L78 Accepts]: Start accepts. Automaton has 56743 states and 81484 transitions. Word has length 240 [2021-11-21 01:47:40,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:40,495 INFO L470 AbstractCegarLoop]: Abstraction has 56743 states and 81484 transitions. [2021-11-21 01:47:40,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-21 01:47:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 56743 states and 81484 transitions. [2021-11-21 01:47:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-21 01:47:40,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:40,502 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:40,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 01:47:40,502 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:47:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:40,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1222104432, now seen corresponding path program 1 times [2021-11-21 01:47:40,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:40,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694990683] [2021-11-21 01:47:40,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:40,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1266 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1262 trivial. 0 not checked. [2021-11-21 01:47:40,854 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:40,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694990683] [2021-11-21 01:47:40,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694990683] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:40,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:40,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:47:40,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989140614] [2021-11-21 01:47:40,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:40,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:40,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:40,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:40,857 INFO L87 Difference]: Start difference. First operand 56743 states and 81484 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:47:43,341 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:45,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:46,701 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:48,716 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:47:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:47:53,158 INFO L93 Difference]: Finished difference Result 56753 states and 81491 transitions. [2021-11-21 01:47:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:47:53,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 246 [2021-11-21 01:47:53,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:47:53,378 INFO L225 Difference]: With dead ends: 56753 [2021-11-21 01:47:53,379 INFO L226 Difference]: Without dead ends: 56751 [2021-11-21 01:47:53,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:47:53,405 INFO L933 BasicCegarLoop]: 3095 mSDtfsCounter, 3032 mSDsluCounter, 7987 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 10024 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:47:53,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 10024 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1544 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2021-11-21 01:47:53,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56751 states. [2021-11-21 01:47:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56751 to 56747. [2021-11-21 01:47:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56747 states, 33045 states have (on average 1.2927523074595249) internal successors, (42719), 34919 states have internal predecessors, (42719), 18962 states have call successors, (18962), 4782 states have call predecessors, (18962), 4737 states have return successors, (19806), 18250 states have call predecessors, (19806), 18958 states have call successors, (19806) [2021-11-21 01:47:55,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56747 states to 56747 states and 81487 transitions. [2021-11-21 01:47:55,918 INFO L78 Accepts]: Start accepts. Automaton has 56747 states and 81487 transitions. Word has length 246 [2021-11-21 01:47:55,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:47:55,919 INFO L470 AbstractCegarLoop]: Abstraction has 56747 states and 81487 transitions. [2021-11-21 01:47:55,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:47:55,919 INFO L276 IsEmpty]: Start isEmpty. Operand 56747 states and 81487 transitions. [2021-11-21 01:47:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-21 01:47:55,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:47:55,925 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:47:55,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 01:47:55,926 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:47:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:47:55,927 INFO L85 PathProgramCache]: Analyzing trace with hash -833976353, now seen corresponding path program 1 times [2021-11-21 01:47:55,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:47:55,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421378094] [2021-11-21 01:47:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:47:55,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:47:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:47:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1277 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-11-21 01:47:56,245 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:47:56,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421378094] [2021-11-21 01:47:56,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421378094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:47:56,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:47:56,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:47:56,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922102301] [2021-11-21 01:47:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:47:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:47:56,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:47:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:47:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:47:56,248 INFO L87 Difference]: Start difference. First operand 56747 states and 81487 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:47:58,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:00,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:02,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:05,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:09,464 INFO L93 Difference]: Finished difference Result 56753 states and 81492 transitions. [2021-11-21 01:48:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:48:09,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 252 [2021-11-21 01:48:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:09,646 INFO L225 Difference]: With dead ends: 56753 [2021-11-21 01:48:09,646 INFO L226 Difference]: Without dead ends: 56751 [2021-11-21 01:48:09,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:48:09,668 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 3256 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 8598 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:09,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3266 Valid, 8598 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1387 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2021-11-21 01:48:09,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56751 states. [2021-11-21 01:48:11,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56751 to 56751. [2021-11-21 01:48:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56751 states, 33048 states have (on average 1.292725732268216) internal successors, (42722), 34922 states have internal predecessors, (42722), 18962 states have call successors, (18962), 4783 states have call predecessors, (18962), 4738 states have return successors, (19806), 18250 states have call predecessors, (19806), 18958 states have call successors, (19806) [2021-11-21 01:48:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56751 states to 56751 states and 81490 transitions. [2021-11-21 01:48:12,205 INFO L78 Accepts]: Start accepts. Automaton has 56751 states and 81490 transitions. Word has length 252 [2021-11-21 01:48:12,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:12,206 INFO L470 AbstractCegarLoop]: Abstraction has 56751 states and 81490 transitions. [2021-11-21 01:48:12,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:48:12,206 INFO L276 IsEmpty]: Start isEmpty. Operand 56751 states and 81490 transitions. [2021-11-21 01:48:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-21 01:48:12,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:12,213 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:48:12,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 01:48:12,214 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:48:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:12,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1491696214, now seen corresponding path program 1 times [2021-11-21 01:48:12,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:12,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000043731] [2021-11-21 01:48:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:12,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:12,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1295 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2021-11-21 01:48:12,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:12,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000043731] [2021-11-21 01:48:12,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000043731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:12,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:12,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:48:12,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744677771] [2021-11-21 01:48:12,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:12,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:48:12,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:48:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:48:12,941 INFO L87 Difference]: Start difference. First operand 56751 states and 81490 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:48:14,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:16,558 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:18,086 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:19,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:22,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:24,041 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:27,864 INFO L93 Difference]: Finished difference Result 56757 states and 81495 transitions. [2021-11-21 01:48:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:48:27,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 255 [2021-11-21 01:48:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:28,034 INFO L225 Difference]: With dead ends: 56757 [2021-11-21 01:48:28,035 INFO L226 Difference]: Without dead ends: 56755 [2021-11-21 01:48:28,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:48:28,051 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 3257 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 8598 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:28,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3266 Valid, 8598 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1386 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2021-11-21 01:48:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56755 states. [2021-11-21 01:48:30,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56755 to 56755. [2021-11-21 01:48:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56755 states, 33051 states have (on average 1.292699161901304) internal successors, (42725), 34925 states have internal predecessors, (42725), 18962 states have call successors, (18962), 4784 states have call predecessors, (18962), 4739 states have return successors, (19806), 18250 states have call predecessors, (19806), 18958 states have call successors, (19806) [2021-11-21 01:48:30,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56755 states to 56755 states and 81493 transitions. [2021-11-21 01:48:30,779 INFO L78 Accepts]: Start accepts. Automaton has 56755 states and 81493 transitions. Word has length 255 [2021-11-21 01:48:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:30,780 INFO L470 AbstractCegarLoop]: Abstraction has 56755 states and 81493 transitions. [2021-11-21 01:48:30,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:48:30,780 INFO L276 IsEmpty]: Start isEmpty. Operand 56755 states and 81493 transitions. [2021-11-21 01:48:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-21 01:48:30,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:30,788 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:30,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 01:48:30,788 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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 01:48:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1810437153, now seen corresponding path program 1 times [2021-11-21 01:48:30,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:30,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787644195] [2021-11-21 01:48:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:30,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2021-11-21 01:48:31,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:31,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787644195] [2021-11-21 01:48:31,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787644195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:31,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:31,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:48:31,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483376919] [2021-11-21 01:48:31,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:31,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:48:31,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:48:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:48:31,071 INFO L87 Difference]: Start difference. First operand 56755 states and 81493 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 01:48:33,450 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:35,891 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:37,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:42,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:48:42,957 INFO L93 Difference]: Finished difference Result 137481 states and 197611 transitions. [2021-11-21 01:48:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:48:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 258 [2021-11-21 01:48:42,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:48:43,262 INFO L225 Difference]: With dead ends: 137481 [2021-11-21 01:48:43,262 INFO L226 Difference]: Without dead ends: 80865 [2021-11-21 01:48:43,427 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 01:48:43,427 INFO L933 BasicCegarLoop]: 5331 mSDtfsCounter, 2895 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 8165 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:48:43,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 8165 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1346 Invalid, 1 Unknown, 0 Unchecked, 8.5s Time] [2021-11-21 01:48:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80865 states. [2021-11-21 01:48:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80865 to 80754. [2021-11-21 01:48:47,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80754 states, 47124 states have (on average 1.2923351158645275) internal successors, (60900), 49786 states have internal predecessors, (60900), 26902 states have call successors, (26902), 6798 states have call predecessors, (26902), 6725 states have return successors, (28132), 25869 states have call predecessors, (28132), 26898 states have call successors, (28132) [2021-11-21 01:48:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80754 states to 80754 states and 115934 transitions. [2021-11-21 01:48:47,682 INFO L78 Accepts]: Start accepts. Automaton has 80754 states and 115934 transitions. Word has length 258 [2021-11-21 01:48:47,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:48:47,683 INFO L470 AbstractCegarLoop]: Abstraction has 80754 states and 115934 transitions. [2021-11-21 01:48:47,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-21 01:48:47,683 INFO L276 IsEmpty]: Start isEmpty. Operand 80754 states and 115934 transitions. [2021-11-21 01:48:47,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-21 01:48:47,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:48:47,689 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:48:47,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 01:48:47,690 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 01:48:47,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:48:47,690 INFO L85 PathProgramCache]: Analyzing trace with hash 915309983, now seen corresponding path program 1 times [2021-11-21 01:48:47,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:48:47,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869679366] [2021-11-21 01:48:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:48:47,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:48:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:48:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2021-11-21 01:48:48,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:48:48,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869679366] [2021-11-21 01:48:48,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869679366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:48:48,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:48:48,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:48:48,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397860470] [2021-11-21 01:48:48,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:48:48,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:48:48,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:48:48,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:48:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:48:48,030 INFO L87 Difference]: Start difference. First operand 80754 states and 115934 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-21 01:48:50,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:52,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:48:54,912 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:00,498 INFO L93 Difference]: Finished difference Result 80764 states and 115941 transitions. [2021-11-21 01:49:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:00,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 262 [2021-11-21 01:49:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:00,942 INFO L225 Difference]: With dead ends: 80764 [2021-11-21 01:49:00,942 INFO L226 Difference]: Without dead ends: 80762 [2021-11-21 01:49:00,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:49:00,966 INFO L933 BasicCegarLoop]: 3095 mSDtfsCounter, 3032 mSDsluCounter, 7987 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 10024 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:00,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3042 Valid, 10024 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1544 Invalid, 2 Unknown, 0 Unchecked, 9.9s Time] [2021-11-21 01:49:01,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80762 states.