./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.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_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/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_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/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_0461acca-f5ba-47f5-bf1c-dff6c192993f/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 3eabf9223369a4133b2add72c0b71a01ceb617c9bc4081cd5107bb51f78aed61 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:46:31,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:46:31,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:46:31,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:46:31,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:46:31,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:46:31,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:46:31,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:46:31,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:46:31,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:46:31,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:46:31,101 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:46:31,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:46:31,103 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:46:31,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:46:31,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:46:31,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:46:31,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:46:31,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:46:31,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:46:31,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:46:31,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:46:31,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:46:31,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:46:31,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:46:31,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:46:31,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:46:31,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:46:31,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:46:31,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:46:31,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:46:31,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:46:31,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:46:31,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:46:31,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:46:31,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:46:31,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:46:31,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:46:31,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:46:31,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:46:31,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:46:31,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:46:31,195 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:46:31,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:46:31,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:46:31,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:46:31,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:46:31,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:46:31,198 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:46:31,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:46:31,198 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:46:31,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:46:31,199 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:46:31,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:46:31,200 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:46:31,200 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:46:31,200 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:46:31,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:46:31,201 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:46:31,201 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:46:31,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:46:31,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:46:31,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:46:31,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:46:31,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:46:31,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:46:31,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:46:31,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:46:31,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:46:31,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:46:31,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:46:31,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:46:31,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:46:31,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:46:31,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:46:31,207 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:46:31,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:46:31,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:46:31,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:46:31,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:46:31,208 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eabf9223369a4133b2add72c0b71a01ceb617c9bc4081cd5107bb51f78aed61 [2021-11-20 23:46:31,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:46:31,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:46:31,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:46:31,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:46:31,545 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:46:31,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i [2021-11-20 23:46:31,618 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/data/ee07f289c/587b14852cd94887aa10535b55f00f70/FLAG3ee1194b8 [2021-11-20 23:46:32,552 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:46:32,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i [2021-11-20 23:46:32,650 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/data/ee07f289c/587b14852cd94887aa10535b55f00f70/FLAG3ee1194b8 [2021-11-20 23:46:32,941 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/data/ee07f289c/587b14852cd94887aa10535b55f00f70 [2021-11-20 23:46:32,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:46:32,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:46:32,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:46:32,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:46:32,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:46:32,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:32" (1/1) ... [2021-11-20 23:46:32,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdabbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:32, skipping insertion in model container [2021-11-20 23:46:32,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:46:32" (1/1) ... [2021-11-20 23:46:32,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:46:33,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:46:37,028 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[392538,392551] [2021-11-20 23:46:37,031 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[392707,392720] [2021-11-20 23:46:37,032 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[392874,392887] [2021-11-20 23:46:37,033 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[393042,393055] [2021-11-20 23:46:37,057 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:46:37,095 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:46:37,609 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[392538,392551] [2021-11-20 23:46:37,609 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[392707,392720] [2021-11-20 23:46:37,610 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[392874,392887] [2021-11-20 23:46:37,610 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_0461acca-f5ba-47f5-bf1c-dff6c192993f/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i[393042,393055] [2021-11-20 23:46:37,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:46:37,942 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:46:37,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37 WrapperNode [2021-11-20 23:46:37,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:46:37,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:46:37,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:46:37,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:46:37,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,065 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,334 INFO L137 Inliner]: procedures = 549, calls = 2131, calls flagged for inlining = 287, calls inlined = 262, statements flattened = 6257 [2021-11-20 23:46:38,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:46:38,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:46:38,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:46:38,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:46:38,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:46:38,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:46:38,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:46:38,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:46:38,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (1/1) ... [2021-11-20 23:46:38,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:46:38,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:46:38,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:46:38,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0461acca-f5ba-47f5-bf1c-dff6c192993f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:46:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-20 23:46:38,729 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-20 23:46:38,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_94 [2021-11-20 23:46:38,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_94 [2021-11-20 23:46:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 23:46:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 23:46:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-20 23:46:38,730 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-20 23:46:38,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_76 [2021-11-20 23:46:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_76 [2021-11-20 23:46:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:46:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-20 23:46:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-20 23:46:38,731 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-20 23:46:38,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-20 23:46:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-20 23:46:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_read [2021-11-20 23:46:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_read [2021-11-20 23:46:38,732 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_resume [2021-11-20 23:46:38,732 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_resume [2021-11-20 23:46:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-20 23:46:38,733 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-20 23:46:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mac_lock_of_smsc911x_data [2021-11-20 23:46:38,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mac_lock_of_smsc911x_data [2021-11-20 23:46:38,733 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_probe [2021-11-20 23:46:38,733 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_probe [2021-11-20 23:46:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure no_printk [2021-11-20 23:46:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure no_printk [2021-11-20 23:46:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-20 23:46:38,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-20 23:46:38,734 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-20 23:46:38,735 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-20 23:46:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-20 23:46:38,735 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-20 23:46:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-20 23:46:38,735 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-20 23:46:38,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-20 23:46:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-20 23:46:38,736 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-20 23:46:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-20 23:46:38,736 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_multicast_list [2021-11-20 23:46:38,736 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_multicast_list [2021-11-20 23:46:38,737 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_set_hw_mac_address [2021-11-20 23:46:38,737 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_set_hw_mac_address [2021-11-20 23:46:38,737 INFO L130 BoogieDeclarations]: Found specification of procedure phy_write [2021-11-20 23:46:38,737 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_write [2021-11-20 23:46:38,737 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-20 23:46:38,737 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-20 23:46:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:46:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-20 23:46:38,738 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-20 23:46:38,738 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_drv_remove [2021-11-20 23:46:38,738 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_drv_remove [2021-11-20 23:46:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_multicast_update [2021-11-20 23:46:38,739 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_multicast_update [2021-11-20 23:46:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-20 23:46:38,739 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-20 23:46:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_mac_lock_of_smsc911x_data [2021-11-20 23:46:38,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_mac_lock_of_smsc911x_data [2021-11-20 23:46:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-11-20 23:46:38,740 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-11-20 23:46:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-20 23:46:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-20 23:46:38,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-20 23:46:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-20 23:46:38,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-20 23:46:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo [2021-11-20 23:46:38,741 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo [2021-11-20 23:46:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 23:46:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-20 23:46:38,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-20 23:46:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_irqhandler [2021-11-20 23:46:38,742 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_irqhandler [2021-11-20 23:46:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:46:38,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-20 23:46:38,742 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-20 23:46:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-20 23:46:38,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-20 23:46:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_resources [2021-11-20 23:46:38,743 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_resources [2021-11-20 23:46:38,743 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_get_rxstatus [2021-11-20 23:46:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_get_rxstatus [2021-11-20 23:46:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read [2021-11-20 23:46:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read [2021-11-20 23:46:38,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:46:38,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-20 23:46:38,746 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_getregslen [2021-11-20 23:46:38,747 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_getregslen [2021-11-20 23:46:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:46:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-20 23:46:38,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-20 23:46:38,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-20 23:46:38,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-20 23:46:38,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-20 23:46:38,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-20 23:46:38,748 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-20 23:46:38,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-20 23:46:38,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:46:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure is_valid_ether_addr [2021-11-20 23:46:38,749 INFO L138 BoogieDeclarations]: Found implementation of procedure is_valid_ether_addr [2021-11-20 23:46:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-20 23:46:38,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-20 23:46:38,749 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-20 23:46:38,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-20 23:46:38,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:46:38,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:46:38,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-20 23:46:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:46:38,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-20 23:46:38,754 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mii_write [2021-11-20 23:46:38,755 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mii_write [2021-11-20 23:46:38,755 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_complete [2021-11-20 23:46:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_complete [2021-11-20 23:46:38,756 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-20 23:46:38,756 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-20 23:46:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-20 23:46:38,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-20 23:46:38,762 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-20 23:46:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-20 23:46:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-20 23:46:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-20 23:46:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32_rep [2021-11-20 23:46:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32_rep [2021-11-20 23:46:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-20 23:46:38,763 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-20 23:46:38,763 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource_byname [2021-11-20 23:46:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource_byname [2021-11-20 23:46:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-20 23:46:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-20 23:46:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-20 23:46:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-20 23:46:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-20 23:46:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-20 23:46:38,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:46:38,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:46:38,765 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-20 23:46:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-20 23:46:38,765 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-11-20 23:46:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-11-20 23:46:38,765 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_get_txstatus [2021-11-20 23:46:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_get_txstatus [2021-11-20 23:46:38,765 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-20 23:46:38,765 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-20 23:46:38,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_is_locked_mac_lock_of_smsc911x_data [2021-11-20 23:46:38,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_is_locked_mac_lock_of_smsc911x_data [2021-11-20 23:46:38,766 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_free [2021-11-20 23:46:38,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_free [2021-11-20 23:46:38,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-20 23:46:38,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 23:46:38,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-20 23:46:38,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-20 23:46:38,767 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo [2021-11-20 23:46:38,767 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo [2021-11-20 23:46:38,767 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_open [2021-11-20 23:46:38,767 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_open [2021-11-20 23:46:38,767 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_unregister [2021-11-20 23:46:38,767 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_unregister [2021-11-20 23:46:38,767 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_get_eeprom_len [2021-11-20 23:46:38,767 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_get_eeprom_len [2021-11-20 23:46:38,767 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:46:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-20 23:46:38,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_dev_lock_of_smsc911x_data [2021-11-20 23:46:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_dev_lock_of_smsc911x_data [2021-11-20 23:46:38,768 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_rx_readfifo_shift [2021-11-20 23:46:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_rx_readfifo_shift [2021-11-20 23:46:38,768 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_suspend [2021-11-20 23:46:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_suspend [2021-11-20 23:46:38,768 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_read_mac_address [2021-11-20 23:46:38,768 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_read_mac_address [2021-11-20 23:46:38,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_93 [2021-11-20 23:46:38,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_93 [2021-11-20 23:46:38,769 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_write [2021-11-20 23:46:38,769 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_write [2021-11-20 23:46:38,769 INFO L130 BoogieDeclarations]: Found specification of procedure phy_read [2021-11-20 23:46:38,769 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_read [2021-11-20 23:46:38,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:46:38,769 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:46:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-20 23:46:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-20 23:46:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-20 23:46:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-20 23:46:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write [2021-11-20 23:46:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write [2021-11-20 23:46:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:46:38,770 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-20 23:46:38,770 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-20 23:46:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:46:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_write [2021-11-20 23:46:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_write [2021-11-20 23:46:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_ethtool_nwayreset [2021-11-20 23:46:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_ethtool_nwayreset [2021-11-20 23:46:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_free_resources [2021-11-20 23:46:38,771 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_free_resources [2021-11-20 23:46:38,771 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_disable_irq_chip [2021-11-20 23:46:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_disable_irq_chip [2021-11-20 23:46:38,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:46:38,772 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_send_cmd [2021-11-20 23:46:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_send_cmd [2021-11-20 23:46:38,772 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-20 23:46:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-20 23:46:38,772 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_adjust_link [2021-11-20 23:46:38,772 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_adjust_link [2021-11-20 23:46:38,772 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_reg_read [2021-11-20 23:46:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_reg_read [2021-11-20 23:46:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-20 23:46:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-20 23:46:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-20 23:46:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-20 23:46:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_update_txcounters [2021-11-20 23:46:38,773 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_update_txcounters [2021-11-20 23:46:38,773 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_read_shift [2021-11-20 23:46:38,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_read_shift [2021-11-20 23:46:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-20 23:46:38,774 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-20 23:46:38,774 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc911x_reg_write_shift [2021-11-20 23:46:38,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc911x_reg_write_shift [2021-11-20 23:46:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-20 23:46:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-20 23:46:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-20 23:46:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-20 23:46:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 23:46:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2021-11-20 23:46:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-11-20 23:46:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-11-20 23:46:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_phy_enable_external [2021-11-20 23:46:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_phy_enable_external [2021-11-20 23:46:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:46:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_mac_read [2021-11-20 23:46:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_mac_read [2021-11-20 23:46:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-20 23:46:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-20 23:46:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-20 23:46:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-20 23:46:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2021-11-20 23:46:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc911x_cleanup_module_14_2 [2021-11-20 23:46:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_soft_reset [2021-11-20 23:46:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_soft_reset [2021-11-20 23:46:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_eeprom_enable_access [2021-11-20 23:46:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_eeprom_enable_access [2021-11-20 23:46:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-20 23:46:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-20 23:46:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure spin_is_locked [2021-11-20 23:46:38,783 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_is_locked [2021-11-20 23:46:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_stop [2021-11-20 23:46:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_stop [2021-11-20 23:46:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-20 23:46:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-20 23:46:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure smsc911x_tx_writefifo_shift [2021-11-20 23:46:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc911x_tx_writefifo_shift [2021-11-20 23:46:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-20 23:46:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-20 23:46:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-20 23:46:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-20 23:46:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:46:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure resource_size [2021-11-20 23:46:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure resource_size [2021-11-20 23:46:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-20 23:46:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-20 23:46:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-20 23:46:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-20 23:46:39,906 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:46:39,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:46:40,162 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-20 23:46:43,732 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-20 23:46:43,853 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:46:44,849 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:46:44,850 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 23:46:44,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:44 BoogieIcfgContainer [2021-11-20 23:46:44,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:46:44,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:46:44,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:46:44,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:46:44,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:46:32" (1/3) ... [2021-11-20 23:46:44,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d7bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:44, skipping insertion in model container [2021-11-20 23:46:44,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:46:37" (2/3) ... [2021-11-20 23:46:44,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391d7bc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:46:44, skipping insertion in model container [2021-11-20 23:46:44,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:46:44" (3/3) ... [2021-11-20 23:46:44,866 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-smsc-smsc911x.cil.i [2021-11-20 23:46:44,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:46:44,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-20 23:46:44,944 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:46:44,951 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 [2021-11-20 23:46:44,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 23:46:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 2144 states, 1255 states have (on average 1.3091633466135457) internal successors, (1643), 1292 states have internal predecessors, (1643), 767 states have call successors, (767), 122 states have call predecessors, (767), 121 states have return successors, (758), 749 states have call predecessors, (758), 758 states have call successors, (758) [2021-11-20 23:46:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-20 23:46:45,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:45,101 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:46:45,102 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)] === [2021-11-20 23:46:45,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2050928444, now seen corresponding path program 1 times [2021-11-20 23:46:45,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:45,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479729977] [2021-11-20 23:46:45,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:45,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-20 23:46:45,876 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:45,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479729977] [2021-11-20 23:46:45,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479729977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:45,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:45,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:46:45,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782697823] [2021-11-20 23:46:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:45,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:46:45,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:45,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:46:45,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:46:45,929 INFO L87 Difference]: Start difference. First operand has 2144 states, 1255 states have (on average 1.3091633466135457) internal successors, (1643), 1292 states have internal predecessors, (1643), 767 states have call successors, (767), 122 states have call predecessors, (767), 121 states have return successors, (758), 749 states have call predecessors, (758), 758 states have call successors, (758) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:46:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:47,580 INFO L93 Difference]: Finished difference Result 6258 states and 9822 transitions. [2021-11-20 23:46:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:46:47,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 211 [2021-11-20 23:46:47,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:47,637 INFO L225 Difference]: With dead ends: 6258 [2021-11-20 23:46:47,637 INFO L226 Difference]: Without dead ends: 4140 [2021-11-20 23:46:47,670 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 [2021-11-20 23:46:47,673 INFO L933 BasicCegarLoop]: 3493 mSDtfsCounter, 2996 mSDsluCounter, 3094 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:47,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2996 Valid, 6242 Invalid, 735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:46:47,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2021-11-20 23:46:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 4136. [2021-11-20 23:46:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4136 states, 2435 states have (on average 1.2985626283367557) internal successors, (3162), 2508 states have internal predecessors, (3162), 1460 states have call successors, (1460), 239 states have call predecessors, (1460), 238 states have return successors, (1456), 1438 states have call predecessors, (1456), 1456 states have call successors, (1456) [2021-11-20 23:46:48,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 6078 transitions. [2021-11-20 23:46:48,214 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 6078 transitions. Word has length 211 [2021-11-20 23:46:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:48,217 INFO L470 AbstractCegarLoop]: Abstraction has 4136 states and 6078 transitions. [2021-11-20 23:46:48,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:46:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 6078 transitions. [2021-11-20 23:46:48,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-20 23:46:48,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:48,237 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:46:48,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:46:48,237 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)] === [2021-11-20 23:46:48,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:48,240 INFO L85 PathProgramCache]: Analyzing trace with hash 505897702, now seen corresponding path program 1 times [2021-11-20 23:46:48,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:48,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566894186] [2021-11-20 23:46:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:48,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-20 23:46:48,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:48,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566894186] [2021-11-20 23:46:48,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566894186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:48,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:48,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:46:48,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99220078] [2021-11-20 23:46:48,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:48,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:46:48,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:46:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:46:48,525 INFO L87 Difference]: Start difference. First operand 4136 states and 6078 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:46:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:50,215 INFO L93 Difference]: Finished difference Result 12266 states and 18118 transitions. [2021-11-20 23:46:50,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:46:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 213 [2021-11-20 23:46:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:50,312 INFO L225 Difference]: With dead ends: 12266 [2021-11-20 23:46:50,312 INFO L226 Difference]: Without dead ends: 8169 [2021-11-20 23:46:50,355 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 [2021-11-20 23:46:50,357 INFO L933 BasicCegarLoop]: 3781 mSDtfsCounter, 3059 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3059 SdHoareTripleChecker+Valid, 6523 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:50,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3059 Valid, 6523 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:46:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8169 states. [2021-11-20 23:46:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8169 to 8139. [2021-11-20 23:46:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8139 states, 4806 states have (on average 1.3006658343736996) internal successors, (6251), 4958 states have internal predecessors, (6251), 2859 states have call successors, (2859), 476 states have call predecessors, (2859), 471 states have return successors, (2943), 2804 states have call predecessors, (2943), 2855 states have call successors, (2943) [2021-11-20 23:46:51,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8139 states to 8139 states and 12053 transitions. [2021-11-20 23:46:51,017 INFO L78 Accepts]: Start accepts. Automaton has 8139 states and 12053 transitions. Word has length 213 [2021-11-20 23:46:51,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:51,018 INFO L470 AbstractCegarLoop]: Abstraction has 8139 states and 12053 transitions. [2021-11-20 23:46:51,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:46:51,018 INFO L276 IsEmpty]: Start isEmpty. Operand 8139 states and 12053 transitions. [2021-11-20 23:46:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-20 23:46:51,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:51,023 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:46:51,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:46:51,024 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)] === [2021-11-20 23:46:51,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1522153062, now seen corresponding path program 1 times [2021-11-20 23:46:51,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:51,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899079314] [2021-11-20 23:46:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:51,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-20 23:46:51,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:51,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899079314] [2021-11-20 23:46:51,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899079314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:51,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:51,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:46:51,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611202185] [2021-11-20 23:46:51,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:51,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:46:51,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:51,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:46:51,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:46:51,208 INFO L87 Difference]: Start difference. First operand 8139 states and 12053 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-20 23:46:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:53,185 INFO L93 Difference]: Finished difference Result 23475 states and 34663 transitions. [2021-11-20 23:46:53,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:46:53,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 220 [2021-11-20 23:46:53,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:53,324 INFO L225 Difference]: With dead ends: 23475 [2021-11-20 23:46:53,324 INFO L226 Difference]: Without dead ends: 15375 [2021-11-20 23:46:53,388 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 [2021-11-20 23:46:53,389 INFO L933 BasicCegarLoop]: 3950 mSDtfsCounter, 2753 mSDsluCounter, 3027 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2753 SdHoareTripleChecker+Valid, 6654 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:53,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2753 Valid, 6654 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 23:46:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15375 states. [2021-11-20 23:46:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15375 to 15341. [2021-11-20 23:46:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15341 states, 9014 states have (on average 1.2885511426669625) internal successors, (11615), 9308 states have internal predecessors, (11615), 5405 states have call successors, (5405), 928 states have call predecessors, (5405), 919 states have return successors, (5493), 5298 states have call predecessors, (5493), 5401 states have call successors, (5493) [2021-11-20 23:46:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15341 states to 15341 states and 22513 transitions. [2021-11-20 23:46:54,624 INFO L78 Accepts]: Start accepts. Automaton has 15341 states and 22513 transitions. Word has length 220 [2021-11-20 23:46:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:54,625 INFO L470 AbstractCegarLoop]: Abstraction has 15341 states and 22513 transitions. [2021-11-20 23:46:54,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-20 23:46:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15341 states and 22513 transitions. [2021-11-20 23:46:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-20 23:46:54,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:54,634 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:46:54,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:46:54,635 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)] === [2021-11-20 23:46:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:54,635 INFO L85 PathProgramCache]: Analyzing trace with hash 48404940, now seen corresponding path program 1 times [2021-11-20 23:46:54,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:54,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731117484] [2021-11-20 23:46:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:54,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-20 23:46:54,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:54,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731117484] [2021-11-20 23:46:54,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731117484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:54,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:54,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:46:54,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182319568] [2021-11-20 23:46:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:54,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:46:54,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:46:54,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:46:54,841 INFO L87 Difference]: Start difference. First operand 15341 states and 22513 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:46:57,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:46:57,243 INFO L93 Difference]: Finished difference Result 43495 states and 63905 transitions. [2021-11-20 23:46:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:46:57,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 219 [2021-11-20 23:46:57,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:46:57,439 INFO L225 Difference]: With dead ends: 43495 [2021-11-20 23:46:57,439 INFO L226 Difference]: Without dead ends: 28193 [2021-11-20 23:46:57,518 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 [2021-11-20 23:46:57,521 INFO L933 BasicCegarLoop]: 3499 mSDtfsCounter, 2688 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 6202 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:46:57,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 6202 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 23:46:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28193 states. [2021-11-20 23:46:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28193 to 28151. [2021-11-20 23:46:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28151 states, 16498 states have (on average 1.2792459692083888) internal successors, (21105), 17064 states have internal predecessors, (21105), 9899 states have call successors, (9899), 1780 states have call predecessors, (9899), 1751 states have return successors, (10355), 9656 states have call predecessors, (10355), 9895 states have call successors, (10355) [2021-11-20 23:46:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28151 states to 28151 states and 41359 transitions. [2021-11-20 23:46:59,655 INFO L78 Accepts]: Start accepts. Automaton has 28151 states and 41359 transitions. Word has length 219 [2021-11-20 23:46:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:46:59,659 INFO L470 AbstractCegarLoop]: Abstraction has 28151 states and 41359 transitions. [2021-11-20 23:46:59,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 23:46:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 28151 states and 41359 transitions. [2021-11-20 23:46:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-20 23:46:59,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:46:59,665 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2021-11-20 23:46:59,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:46:59,665 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)] === [2021-11-20 23:46:59,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:46:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2044669731, now seen corresponding path program 1 times [2021-11-20 23:46:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:46:59,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697901587] [2021-11-20 23:46:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:46:59,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:46:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:46:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2021-11-20 23:46:59,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:46:59,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697901587] [2021-11-20 23:46:59,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697901587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:46:59,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:46:59,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:46:59,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786609992] [2021-11-20 23:46:59,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:46:59,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:46:59,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:46:59,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:46:59,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:46:59,880 INFO L87 Difference]: Start difference. First operand 28151 states and 41359 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:47:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:03,443 INFO L93 Difference]: Finished difference Result 70120 states and 102956 transitions. [2021-11-20 23:47:03,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:47:03,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 234 [2021-11-20 23:47:03,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:03,800 INFO L225 Difference]: With dead ends: 70120 [2021-11-20 23:47:03,801 INFO L226 Difference]: Without dead ends: 42008 [2021-11-20 23:47:04,112 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 [2021-11-20 23:47:04,113 INFO L933 BasicCegarLoop]: 3533 mSDtfsCounter, 2995 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2995 SdHoareTripleChecker+Valid, 6272 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:04,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2995 Valid, 6272 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:47:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42008 states. [2021-11-20 23:47:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42008 to 41966. [2021-11-20 23:47:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41966 states, 24578 states have (on average 1.2765888192692652) internal successors, (31376), 25454 states have internal predecessors, (31376), 14731 states have call successors, (14731), 2697 states have call predecessors, (14731), 2654 states have return successors, (15417), 14339 states have call predecessors, (15417), 14727 states have call successors, (15417) [2021-11-20 23:47:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41966 states to 41966 states and 61524 transitions. [2021-11-20 23:47:07,170 INFO L78 Accepts]: Start accepts. Automaton has 41966 states and 61524 transitions. Word has length 234 [2021-11-20 23:47:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:07,171 INFO L470 AbstractCegarLoop]: Abstraction has 41966 states and 61524 transitions. [2021-11-20 23:47:07,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:47:07,171 INFO L276 IsEmpty]: Start isEmpty. Operand 41966 states and 61524 transitions. [2021-11-20 23:47:07,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-20 23:47:07,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:07,177 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 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] [2021-11-20 23:47:07,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 23:47:07,177 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)] === [2021-11-20 23:47:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:07,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1048261223, now seen corresponding path program 1 times [2021-11-20 23:47:07,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:47:07,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301793499] [2021-11-20 23:47:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:07,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:47:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:07,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1409 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2021-11-20 23:47:07,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:47:07,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301793499] [2021-11-20 23:47:07,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301793499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:47:07,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:47:07,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:47:07,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52154666] [2021-11-20 23:47:07,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:47:07,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:47:07,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:47:07,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:47:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:47:07,720 INFO L87 Difference]: Start difference. First operand 41966 states and 61524 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:47:11,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:11,387 INFO L93 Difference]: Finished difference Result 111421 states and 163299 transitions. [2021-11-20 23:47:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:47:11,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 234 [2021-11-20 23:47:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:11,776 INFO L225 Difference]: With dead ends: 111421 [2021-11-20 23:47:11,776 INFO L226 Difference]: Without dead ends: 69494 [2021-11-20 23:47:12,257 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 [2021-11-20 23:47:12,258 INFO L933 BasicCegarLoop]: 3615 mSDtfsCounter, 2996 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2996 SdHoareTripleChecker+Valid, 6354 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:12,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2996 Valid, 6354 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 23:47:12,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69494 states. [2021-11-20 23:47:15,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69494 to 69452. [2021-11-20 23:47:15,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69452 states, 40626 states have (on average 1.2740117166346674) internal successors, (51758), 42122 states have internal predecessors, (51758), 24379 states have call successors, (24379), 4515 states have call predecessors, (24379), 4444 states have return successors, (25525), 23689 states have call predecessors, (25525), 24375 states have call successors, (25525) [2021-11-20 23:47:16,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69452 states to 69452 states and 101662 transitions. [2021-11-20 23:47:16,035 INFO L78 Accepts]: Start accepts. Automaton has 69452 states and 101662 transitions. Word has length 234 [2021-11-20 23:47:16,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:16,036 INFO L470 AbstractCegarLoop]: Abstraction has 69452 states and 101662 transitions. [2021-11-20 23:47:16,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-20 23:47:16,036 INFO L276 IsEmpty]: Start isEmpty. Operand 69452 states and 101662 transitions. [2021-11-20 23:47:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-20 23:47:16,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:16,043 INFO L514 BasicCegarLoop]: trace histogram [21, 19, 19, 19, 19, 19, 19, 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] [2021-11-20 23:47:16,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 23:47:16,043 INFO L402 AbstractCegarLoop]: === Iteration 7 === 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)] === [2021-11-20 23:47:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:16,044 INFO L85 PathProgramCache]: Analyzing trace with hash 654883610, now seen corresponding path program 1 times [2021-11-20 23:47:16,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:47:16,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917870748] [2021-11-20 23:47:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:16,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:47:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:16,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1446 trivial. 0 not checked. [2021-11-20 23:47:16,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:47:16,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917870748] [2021-11-20 23:47:16,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917870748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:47:16,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:47:16,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:47:16,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010086559] [2021-11-20 23:47:16,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:47:16,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:47:16,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:47:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:47:16,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:47:16,218 INFO L87 Difference]: Start difference. First operand 69452 states and 101662 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-20 23:47:21,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:21,211 INFO L93 Difference]: Finished difference Result 166124 states and 243151 transitions. [2021-11-20 23:47:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:47:21,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 239 [2021-11-20 23:47:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:21,824 INFO L225 Difference]: With dead ends: 166124 [2021-11-20 23:47:21,824 INFO L226 Difference]: Without dead ends: 96711 [2021-11-20 23:47:22,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:47:22,142 INFO L933 BasicCegarLoop]: 5040 mSDtfsCounter, 2976 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2976 SdHoareTripleChecker+Valid, 7772 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:22,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2976 Valid, 7772 Invalid, 1058 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [12 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:47:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96711 states. [2021-11-20 23:47:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96711 to 96623. [2021-11-20 23:47:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96623 states, 56964 states have (on average 1.274787585141493) internal successors, (72617), 59102 states have internal predecessors, (72617), 33357 states have call successors, (33357), 6416 states have call predecessors, (33357), 6299 states have return successors, (35113), 32308 states have call predecessors, (35113), 33353 states have call successors, (35113) [2021-11-20 23:47:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96623 states to 96623 states and 141087 transitions. [2021-11-20 23:47:27,805 INFO L78 Accepts]: Start accepts. Automaton has 96623 states and 141087 transitions. Word has length 239 [2021-11-20 23:47:27,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:27,806 INFO L470 AbstractCegarLoop]: Abstraction has 96623 states and 141087 transitions. [2021-11-20 23:47:27,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-20 23:47:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 96623 states and 141087 transitions. [2021-11-20 23:47:27,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-20 23:47:27,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:27,813 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-20 23:47:27,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 23:47:27,813 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)] === [2021-11-20 23:47:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:27,814 INFO L85 PathProgramCache]: Analyzing trace with hash 772058978, now seen corresponding path program 1 times [2021-11-20 23:47:27,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:47:27,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889985954] [2021-11-20 23:47:27,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:27,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:47:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1559 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2021-11-20 23:47:28,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:47:28,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889985954] [2021-11-20 23:47:28,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889985954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:47:28,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:47:28,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:47:28,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716770243] [2021-11-20 23:47:28,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:47:28,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:47:28,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:47:28,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:47:28,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:47:28,151 INFO L87 Difference]: Start difference. First operand 96623 states and 141087 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:47:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:47:32,950 INFO L93 Difference]: Finished difference Result 96629 states and 141092 transitions. [2021-11-20 23:47:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 23:47:32,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 253 [2021-11-20 23:47:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:47:33,668 INFO L225 Difference]: With dead ends: 96629 [2021-11-20 23:47:33,668 INFO L226 Difference]: Without dead ends: 96627 [2021-11-20 23:47:33,700 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 [2021-11-20 23:47:33,701 INFO L933 BasicCegarLoop]: 2756 mSDtfsCounter, 3046 mSDsluCounter, 6208 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 8254 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:47:33,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3058 Valid, 8254 Invalid, 1086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 23:47:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96627 states. [2021-11-20 23:47:38,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96627 to 96627. [2021-11-20 23:47:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96627 states, 56967 states have (on average 1.2747731142591325) internal successors, (72620), 59105 states have internal predecessors, (72620), 33357 states have call successors, (33357), 6417 states have call predecessors, (33357), 6300 states have return successors, (35113), 32308 states have call predecessors, (35113), 33353 states have call successors, (35113) [2021-11-20 23:47:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96627 states to 96627 states and 141090 transitions. [2021-11-20 23:47:39,236 INFO L78 Accepts]: Start accepts. Automaton has 96627 states and 141090 transitions. Word has length 253 [2021-11-20 23:47:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:47:39,237 INFO L470 AbstractCegarLoop]: Abstraction has 96627 states and 141090 transitions. [2021-11-20 23:47:39,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 23:47:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 96627 states and 141090 transitions. [2021-11-20 23:47:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-20 23:47:39,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:47:39,245 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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, 1, 1, 1, 1] [2021-11-20 23:47:39,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 23:47:39,245 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)] === [2021-11-20 23:47:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:47:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1892966207, now seen corresponding path program 1 times [2021-11-20 23:47:39,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:47:39,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733497024] [2021-11-20 23:47:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:47:39,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:47:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:47:39,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1561 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2021-11-20 23:47:39,561 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:47:39,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733497024] [2021-11-20 23:47:39,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733497024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:47:39,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:47:39,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:47:39,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915103106] [2021-11-20 23:47:39,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:47:39,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:47:39,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:47:39,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:47:39,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:47:39,565 INFO L87 Difference]: Start difference. First operand 96627 states and 141090 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, (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)