./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:54,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:54,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:54,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:54,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:54,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:54,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:54,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:54,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:54,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:54,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:54,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:54,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:54,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:54,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:54,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:54,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:54,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:54,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:54,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:54,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:54,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:54,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:54,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:54,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:54,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:54,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:54,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:54,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:54,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:54,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:54,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:54,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:54,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:54,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:54,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:54,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:54,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:54,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:54,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:54,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:54,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:16:54,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:54,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:54,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:54,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:54,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:54,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:54,261 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:54,261 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:54,262 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:54,262 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:16:54,263 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:54,263 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:54,264 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:16:54,264 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:16:54,264 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:54,264 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:16:54,265 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:16:54,265 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:16:54,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:54,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:54,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:54,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:16:54,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:54,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:16:54,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:16:54,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:54,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:16:54,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:54,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:54,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:54,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:54,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:54,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:16:54,271 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:16:54,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:16:54,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:16:54,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:54,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:54,272 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcd453e519a411dcaaa8ea095e5544a2fd8cdb9a31e662fc6de670ff7f7c541 [2021-11-23 02:16:54,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:54,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:54,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:54,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:54,543 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:54,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-23 02:16:54,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/data/d6aad002e/289ade1a0608420f883e97279c9521c0/FLAG6fbb44564 [2021-11-23 02:16:55,598 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:55,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-23 02:16:55,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/data/d6aad002e/289ade1a0608420f883e97279c9521c0/FLAG6fbb44564 [2021-11-23 02:16:55,986 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/data/d6aad002e/289ade1a0608420f883e97279c9521c0 [2021-11-23 02:16:55,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:55,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:55,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:55,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:55,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:55,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:55" (1/1) ... [2021-11-23 02:16:56,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493f1b8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:56, skipping insertion in model container [2021-11-23 02:16:56,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:55" (1/1) ... [2021-11-23 02:16:56,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:56,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:58,981 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-23 02:16:58,984 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-23 02:16:58,985 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-23 02:16:58,986 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-23 02:16:59,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:59,041 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:59,444 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[320934,320947] [2021-11-23 02:16:59,444 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321103,321116] [2021-11-23 02:16:59,445 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321270,321283] [2021-11-23 02:16:59,445 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_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i[321438,321451] [2021-11-23 02:16:59,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:59,641 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:59,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59 WrapperNode [2021-11-23 02:16:59,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:59,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:59,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:59,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:59,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:16:59,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:16:59,981 INFO L137 Inliner]: procedures = 418, calls = 1969, calls flagged for inlining = 195, calls inlined = 179, statements flattened = 5220 [2021-11-23 02:16:59,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:59,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:59,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:59,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:59,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:16:59,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:17:00,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:17:00,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:17:00,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:17:00,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:17:00,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:17:00,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:17:00,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:17:00,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:17:00,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:17:00,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (1/1) ... [2021-11-23 02:17:00,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:17:00,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:00,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:17:00,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:17:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2021-11-23 02:17:00,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fst_cleanup_module_12_2 [2021-11-23 02:17:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:17:00,389 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:17:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:17:00,389 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:17:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:17:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:17:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:17:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:17:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure fst_remove_one [2021-11-23 02:17:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_remove_one [2021-11-23 02:17:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:17:00,390 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:17:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:17:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-23 02:17:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2021-11-23 02:17:00,391 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2021-11-23 02:17:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2021-11-23 02:17:00,392 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2021-11-23 02:17:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-23 02:17:00,392 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-23 02:17:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2021-11-23 02:17:00,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2021-11-23 02:17:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_67 [2021-11-23 02:17:00,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_67 [2021-11-23 02:17:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 02:17:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 02:17:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure fst_close [2021-11-23 02:17:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_close [2021-11-23 02:17:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:17:00,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-23 02:17:00,395 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-23 02:17:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-23 02:17:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 02:17:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 02:17:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure fst_tx_timeout [2021-11-23 02:17:00,396 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_tx_timeout [2021-11-23 02:17:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:17:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:17:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:17:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-23 02:17:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-23 02:17:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure fst_open [2021-11-23 02:17:00,399 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_open [2021-11-23 02:17:00,399 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_type_trans [2021-11-23 02:17:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_type_trans [2021-11-23 02:17:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:17:00,400 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:17:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:17:00,400 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:17:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:17:00,401 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:17:00,401 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:17:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 02:17:00,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 02:17:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:17:00,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-23 02:17:00,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-23 02:17:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:17:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2021-11-23 02:17:00,403 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2021-11-23 02:17:00,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:17:00,403 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:17:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure fst_issue_cmd [2021-11-23 02:17:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_issue_cmd [2021-11-23 02:17:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-23 02:17:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-23 02:17:00,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-23 02:17:00,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-23 02:17:00,405 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:17:00,405 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:17:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:17:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:17:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:17:00,406 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:17:00,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:17:00,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-23 02:17:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:17:00,407 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-23 02:17:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-23 02:17:00,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-23 02:17:00,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-23 02:17:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_card_lock_of_fst_card_info [2021-11-23 02:17:00,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_card_lock_of_fst_card_info [2021-11-23 02:17:00,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:17:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure fst_cpureset [2021-11-23 02:17:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_cpureset [2021-11-23 02:17:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-23 02:17:00,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-23 02:17:00,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:17:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:17:00,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:17:00,411 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-23 02:17:00,411 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-23 02:17:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:17:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 02:17:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-23 02:17:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-23 02:17:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure fst_q_work_item [2021-11-23 02:17:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_q_work_item [2021-11-23 02:17:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-23 02:17:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-23 02:17:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:17:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:17:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:17:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:17:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-23 02:17:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-23 02:17:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 02:17:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 02:17:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure writeb [2021-11-23 02:17:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure writeb [2021-11-23 02:17:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure writew [2021-11-23 02:17:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure writew [2021-11-23 02:17:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:17:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:17:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:17:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:17:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:17:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:17:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:17:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-23 02:17:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2021-11-23 02:17:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2021-11-23 02:17:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:17:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:17:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:17:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:17:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2021-11-23 02:17:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2021-11-23 02:17:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-23 02:17:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-23 02:17:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:17:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2021-11-23 02:17:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2021-11-23 02:17:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:17:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure ioremap [2021-11-23 02:17:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ioremap [2021-11-23 02:17:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:17:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:17:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:17:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:17:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-23 02:17:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-23 02:17:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-23 02:17:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-23 02:17:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-23 02:17:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-23 02:17:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-23 02:17:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-11-23 02:17:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-11-23 02:17:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-23 02:17:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-23 02:17:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure farsync_type_trans [2021-11-23 02:17:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure farsync_type_trans [2021-11-23 02:17:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 02:17:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 02:17:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:17:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:17:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_fst_work_q_lock [2021-11-23 02:17:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_fst_work_q_lock [2021-11-23 02:17:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:17:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:17:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:17:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure fst_disable_intr [2021-11-23 02:17:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_disable_intr [2021-11-23 02:17:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:17:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:17:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-23 02:17:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-23 02:17:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 02:17:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 02:17:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure do_bottom_half_tx [2021-11-23 02:17:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure do_bottom_half_tx [2021-11-23 02:17:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure fst_process_rx_status [2021-11-23 02:17:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_process_rx_status [2021-11-23 02:17:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-23 02:17:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-23 02:17:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure readw [2021-11-23 02:17:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure readw [2021-11-23 02:17:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_ioctl [2021-11-23 02:17:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_ioctl [2021-11-23 02:17:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-23 02:17:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-23 02:17:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 02:17:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 02:17:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2021-11-23 02:17:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2021-11-23 02:17:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure fst_clear_intr [2021-11-23 02:17:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure fst_clear_intr [2021-11-23 02:17:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:17:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2021-11-23 02:17:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2021-11-23 02:17:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:17:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:17:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure readb [2021-11-23 02:17:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure readb [2021-11-23 02:17:01,319 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:17:01,323 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:17:01,432 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:17:04,908 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 02:17:05,013 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:17:06,161 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:17:06,161 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:17:06,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:06 BoogieIcfgContainer [2021-11-23 02:17:06,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:17:06,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:17:06,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:17:06,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:17:06,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:55" (1/3) ... [2021-11-23 02:17:06,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e9cb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:06, skipping insertion in model container [2021-11-23 02:17:06,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:59" (2/3) ... [2021-11-23 02:17:06,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8e9cb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:17:06, skipping insertion in model container [2021-11-23 02:17:06,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:17:06" (3/3) ... [2021-11-23 02:17:06,177 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wan-farsync.cil.i [2021-11-23 02:17:06,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:17:06,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-23 02:17:06,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:17:06,275 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 [2021-11-23 02:17:06,276 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-23 02:17:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) [2021-11-23 02:17:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 02:17:06,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:06,363 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:06,364 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)] === [2021-11-23 02:17:06,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:06,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1481671742, now seen corresponding path program 1 times [2021-11-23 02:17:06,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:06,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018765113] [2021-11-23 02:17:06,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:06,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 02:17:07,047 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:07,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018765113] [2021-11-23 02:17:07,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018765113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:07,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:07,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:07,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383757047] [2021-11-23 02:17:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:07,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:07,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:07,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:07,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:07,103 INFO L87 Difference]: Start difference. First operand has 1429 states, 848 states have (on average 1.3113207547169812) internal successors, (1112), 862 states have internal predecessors, (1112), 488 states have call successors, (488), 91 states have call predecessors, (488), 90 states have return successors, (481), 479 states have call predecessors, (481), 481 states have call successors, (481) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:17:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:08,855 INFO L93 Difference]: Finished difference Result 4182 states and 6195 transitions. [2021-11-23 02:17:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:08,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2021-11-23 02:17:08,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:08,915 INFO L225 Difference]: With dead ends: 4182 [2021-11-23 02:17:08,915 INFO L226 Difference]: Without dead ends: 2753 [2021-11-23 02:17:08,934 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 [2021-11-23 02:17:08,939 INFO L933 BasicCegarLoop]: 2263 mSDtfsCounter, 1973 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 4038 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:08,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1973 Valid, 4038 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:17:08,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-11-23 02:17:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2749. [2021-11-23 02:17:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2749 states, 1648 states have (on average 1.3046116504854368) internal successors, (2150), 1675 states have internal predecessors, (2150), 922 states have call successors, (922), 177 states have call predecessors, (922), 176 states have return successors, (918), 914 states have call predecessors, (918), 918 states have call successors, (918) [2021-11-23 02:17:09,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2749 states to 2749 states and 3990 transitions. [2021-11-23 02:17:09,298 INFO L78 Accepts]: Start accepts. Automaton has 2749 states and 3990 transitions. Word has length 71 [2021-11-23 02:17:09,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:09,299 INFO L470 AbstractCegarLoop]: Abstraction has 2749 states and 3990 transitions. [2021-11-23 02:17:09,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:17:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2749 states and 3990 transitions. [2021-11-23 02:17:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:17:09,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:09,306 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:09,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:17:09,306 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)] === [2021-11-23 02:17:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1350800671, now seen corresponding path program 1 times [2021-11-23 02:17:09,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:09,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67729017] [2021-11-23 02:17:09,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:09,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 02:17:09,499 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:09,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67729017] [2021-11-23 02:17:09,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67729017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:09,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:09,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:17:09,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648999282] [2021-11-23 02:17:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:09,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:17:09,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:09,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:17:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:17:09,503 INFO L87 Difference]: Start difference. First operand 2749 states and 3990 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:17:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:15,720 INFO L93 Difference]: Finished difference Result 7146 states and 10374 transitions. [2021-11-23 02:17:15,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:17:15,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2021-11-23 02:17:15,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:15,760 INFO L225 Difference]: With dead ends: 7146 [2021-11-23 02:17:15,760 INFO L226 Difference]: Without dead ends: 4408 [2021-11-23 02:17:15,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:17:15,775 INFO L933 BasicCegarLoop]: 2488 mSDtfsCounter, 6072 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 1971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6287 SdHoareTripleChecker+Valid, 4872 SdHoareTripleChecker+Invalid, 4744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1971 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:15,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6287 Valid, 4872 Invalid, 4744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1971 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-23 02:17:15,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4408 states. [2021-11-23 02:17:16,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4408 to 4354. [2021-11-23 02:17:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 2660 states have (on average 1.3150375939849623) internal successors, (3498), 2703 states have internal predecessors, (3498), 1401 states have call successors, (1401), 293 states have call predecessors, (1401), 290 states have return successors, (1397), 1385 states have call predecessors, (1397), 1397 states have call successors, (1397) [2021-11-23 02:17:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 6296 transitions. [2021-11-23 02:17:16,049 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 6296 transitions. Word has length 79 [2021-11-23 02:17:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:16,051 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 6296 transitions. [2021-11-23 02:17:16,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:17:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 6296 transitions. [2021-11-23 02:17:16,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-23 02:17:16,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:16,056 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:16,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:17:16,056 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)] === [2021-11-23 02:17:16,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:16,057 INFO L85 PathProgramCache]: Analyzing trace with hash -692326567, now seen corresponding path program 1 times [2021-11-23 02:17:16,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:16,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678537751] [2021-11-23 02:17:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:16,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 02:17:16,234 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:16,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678537751] [2021-11-23 02:17:16,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678537751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:16,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:16,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:16,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618916368] [2021-11-23 02:17:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:16,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:16,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:16,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:16,240 INFO L87 Difference]: Start difference. First operand 4354 states and 6296 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:17:17,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:17,943 INFO L93 Difference]: Finished difference Result 10564 states and 15184 transitions. [2021-11-23 02:17:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:17,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 81 [2021-11-23 02:17:17,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:17,995 INFO L225 Difference]: With dead ends: 10564 [2021-11-23 02:17:17,996 INFO L226 Difference]: Without dead ends: 6221 [2021-11-23 02:17:18,012 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 [2021-11-23 02:17:18,018 INFO L933 BasicCegarLoop]: 2166 mSDtfsCounter, 1526 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:18,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 3946 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:17:18,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6221 states. [2021-11-23 02:17:18,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6221 to 6192. [2021-11-23 02:17:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 3767 states have (on average 1.3100610565436688) internal successors, (4935), 3834 states have internal predecessors, (4935), 1956 states have call successors, (1956), 471 states have call predecessors, (1956), 466 states have return successors, (1955), 1922 states have call predecessors, (1955), 1952 states have call successors, (1955) [2021-11-23 02:17:18,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 8846 transitions. [2021-11-23 02:17:18,428 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 8846 transitions. Word has length 81 [2021-11-23 02:17:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:18,429 INFO L470 AbstractCegarLoop]: Abstraction has 6192 states and 8846 transitions. [2021-11-23 02:17:18,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 02:17:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 8846 transitions. [2021-11-23 02:17:18,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:17:18,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:18,434 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:18,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:17:18,435 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)] === [2021-11-23 02:17:18,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash 322112022, now seen corresponding path program 1 times [2021-11-23 02:17:18,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:18,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722664630] [2021-11-23 02:17:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:18,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:18,582 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 02:17:18,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:18,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722664630] [2021-11-23 02:17:18,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722664630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:18,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:18,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:18,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046242567] [2021-11-23 02:17:18,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:18,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:18,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:18,589 INFO L87 Difference]: Start difference. First operand 6192 states and 8846 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:17:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:20,493 INFO L93 Difference]: Finished difference Result 17274 states and 24595 transitions. [2021-11-23 02:17:20,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:20,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 79 [2021-11-23 02:17:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:20,607 INFO L225 Difference]: With dead ends: 17274 [2021-11-23 02:17:20,607 INFO L226 Difference]: Without dead ends: 11093 [2021-11-23 02:17:20,639 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 [2021-11-23 02:17:20,640 INFO L933 BasicCegarLoop]: 2226 mSDtfsCounter, 1839 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 3992 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:20,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 3992 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-23 02:17:20,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11093 states. [2021-11-23 02:17:21,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11093 to 11055. [2021-11-23 02:17:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11055 states, 6720 states have (on average 1.2983630952380953) internal successors, (8725), 6855 states have internal predecessors, (8725), 3450 states have call successors, (3450), 891 states have call predecessors, (3450), 882 states have return successors, (3452), 3371 states have call predecessors, (3452), 3446 states have call successors, (3452) [2021-11-23 02:17:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11055 states to 11055 states and 15627 transitions. [2021-11-23 02:17:21,289 INFO L78 Accepts]: Start accepts. Automaton has 11055 states and 15627 transitions. Word has length 79 [2021-11-23 02:17:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:21,291 INFO L470 AbstractCegarLoop]: Abstraction has 11055 states and 15627 transitions. [2021-11-23 02:17:21,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:17:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 11055 states and 15627 transitions. [2021-11-23 02:17:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-23 02:17:21,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:21,293 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:21,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:17:21,293 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)] === [2021-11-23 02:17:21,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:21,296 INFO L85 PathProgramCache]: Analyzing trace with hash 734917167, now seen corresponding path program 1 times [2021-11-23 02:17:21,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:21,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728470220] [2021-11-23 02:17:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:21,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:21,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-23 02:17:21,427 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:21,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728470220] [2021-11-23 02:17:21,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728470220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:21,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:21,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:21,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612691209] [2021-11-23 02:17:21,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:21,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:21,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:21,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:21,429 INFO L87 Difference]: Start difference. First operand 11055 states and 15627 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:17:23,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:23,460 INFO L93 Difference]: Finished difference Result 31847 states and 44972 transitions. [2021-11-23 02:17:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:23,461 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2021-11-23 02:17:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:23,570 INFO L225 Difference]: With dead ends: 31847 [2021-11-23 02:17:23,570 INFO L226 Difference]: Without dead ends: 20803 [2021-11-23 02:17:23,620 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 [2021-11-23 02:17:23,621 INFO L933 BasicCegarLoop]: 2415 mSDtfsCounter, 1946 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4181 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:23,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1946 Valid, 4181 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:17:23,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20803 states. [2021-11-23 02:17:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20803 to 20765. [2021-11-23 02:17:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20765 states, 12664 states have (on average 1.2884554643082755) internal successors, (16317), 12936 states have internal predecessors, (16317), 6410 states have call successors, (6410), 1705 states have call predecessors, (6410), 1688 states have return successors, (6418), 6241 states have call predecessors, (6418), 6406 states have call successors, (6418) [2021-11-23 02:17:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20765 states to 20765 states and 29145 transitions. [2021-11-23 02:17:24,736 INFO L78 Accepts]: Start accepts. Automaton has 20765 states and 29145 transitions. Word has length 80 [2021-11-23 02:17:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:24,737 INFO L470 AbstractCegarLoop]: Abstraction has 20765 states and 29145 transitions. [2021-11-23 02:17:24,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 02:17:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand 20765 states and 29145 transitions. [2021-11-23 02:17:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-23 02:17:24,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:24,740 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:24,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:17:24,741 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)] === [2021-11-23 02:17:24,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash -33063383, now seen corresponding path program 1 times [2021-11-23 02:17:24,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:24,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007400335] [2021-11-23 02:17:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:24,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-23 02:17:24,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007400335] [2021-11-23 02:17:24,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007400335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:24,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:24,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:24,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897792748] [2021-11-23 02:17:24,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:24,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:24,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:24,876 INFO L87 Difference]: Start difference. First operand 20765 states and 29145 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:17:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:27,447 INFO L93 Difference]: Finished difference Result 57638 states and 80900 transitions. [2021-11-23 02:17:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:27,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2021-11-23 02:17:27,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:27,658 INFO L225 Difference]: With dead ends: 57638 [2021-11-23 02:17:27,658 INFO L226 Difference]: Without dead ends: 36884 [2021-11-23 02:17:27,737 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 [2021-11-23 02:17:27,739 INFO L933 BasicCegarLoop]: 2632 mSDtfsCounter, 1838 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 4371 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:27,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1838 Valid, 4371 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-23 02:17:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36884 states. [2021-11-23 02:17:29,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36884 to 36834. [2021-11-23 02:17:29,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36834 states, 22417 states have (on average 1.2840701253512958) internal successors, (28785), 22967 states have internal predecessors, (28785), 11412 states have call successors, (11412), 3067 states have call predecessors, (11412), 3002 states have return successors, (11440), 11019 states have call predecessors, (11440), 11408 states have call successors, (11440) [2021-11-23 02:17:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36834 states to 36834 states and 51637 transitions. [2021-11-23 02:17:29,756 INFO L78 Accepts]: Start accepts. Automaton has 36834 states and 51637 transitions. Word has length 92 [2021-11-23 02:17:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:29,758 INFO L470 AbstractCegarLoop]: Abstraction has 36834 states and 51637 transitions. [2021-11-23 02:17:29,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:17:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 36834 states and 51637 transitions. [2021-11-23 02:17:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-23 02:17:29,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:29,761 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:29,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 02:17:29,761 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:17:29,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:29,762 INFO L85 PathProgramCache]: Analyzing trace with hash 602146562, now seen corresponding path program 1 times [2021-11-23 02:17:29,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:29,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063280920] [2021-11-23 02:17:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:29,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:30,162 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-23 02:17:30,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:30,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063280920] [2021-11-23 02:17:30,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063280920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:30,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:17:30,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:17:30,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617143098] [2021-11-23 02:17:30,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:30,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:17:30,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:17:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:17:30,165 INFO L87 Difference]: Start difference. First operand 36834 states and 51637 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:17:32,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:32,258 INFO L93 Difference]: Finished difference Result 73636 states and 103279 transitions. [2021-11-23 02:17:32,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:17:32,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2021-11-23 02:17:32,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:32,438 INFO L225 Difference]: With dead ends: 73636 [2021-11-23 02:17:32,438 INFO L226 Difference]: Without dead ends: 36882 [2021-11-23 02:17:32,525 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 [2021-11-23 02:17:32,528 INFO L933 BasicCegarLoop]: 1796 mSDtfsCounter, 0 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:32,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3590 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 02:17:32,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36882 states. [2021-11-23 02:17:34,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36882 to 36882. [2021-11-23 02:17:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36882 states, 22465 states have (on average 1.283463164923214) internal successors, (28833), 23015 states have internal predecessors, (28833), 11412 states have call successors, (11412), 3067 states have call predecessors, (11412), 3002 states have return successors, (11440), 11019 states have call predecessors, (11440), 11408 states have call successors, (11440) [2021-11-23 02:17:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36882 states to 36882 states and 51685 transitions. [2021-11-23 02:17:34,605 INFO L78 Accepts]: Start accepts. Automaton has 36882 states and 51685 transitions. Word has length 122 [2021-11-23 02:17:34,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:34,605 INFO L470 AbstractCegarLoop]: Abstraction has 36882 states and 51685 transitions. [2021-11-23 02:17:34,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-23 02:17:34,606 INFO L276 IsEmpty]: Start isEmpty. Operand 36882 states and 51685 transitions. [2021-11-23 02:17:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 02:17:34,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:34,611 INFO L514 BasicCegarLoop]: trace histogram [9, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:34,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 02:17:34,611 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)] === [2021-11-23 02:17:34,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:34,612 INFO L85 PathProgramCache]: Analyzing trace with hash 838275709, now seen corresponding path program 1 times [2021-11-23 02:17:34,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:34,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294852146] [2021-11-23 02:17:34,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:34,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-23 02:17:34,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:34,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294852146] [2021-11-23 02:17:34,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294852146] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:17:34,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432127193] [2021-11-23 02:17:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:34,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:34,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:34,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:34,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fdd9363b-f478-4b51-aad7-fb6fb58f31f2/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:17:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:35,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:17:35,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-23 02:17:35,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:36,062 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-23 02:17:36,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432127193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:36,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [480606052] [2021-11-23 02:17:36,105 INFO L159 IcfgInterpreter]: Started Sifa with 65 locations of interest [2021-11-23 02:17:36,106 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:36,110 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:36,115 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:36,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:38,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 57 [2021-11-23 02:17:38,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-23 02:17:38,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2021-11-23 02:18:04,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:18:05,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:18:05,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 994 treesize of output 801 [2021-11-23 02:18:06,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 994 treesize of output 801 [2021-11-23 02:18:06,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:06,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 755 treesize of output 644 [2021-11-23 02:18:06,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 752 treesize of output 730 [2021-11-23 02:18:10,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:10,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6179 treesize of output 5766 [2021-11-23 02:18:11,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 6172 treesize of output 5759 [2021-11-23 02:18:11,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:18:11,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 6165 treesize of output 5886 [2021-11-23 02:18:12,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6162 treesize of output 6140 [2021-11-23 02:18:19,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-23 02:18:19,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:18:19,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:18:21,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-23 02:18:31,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:18:31,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:18:31,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:18:31,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:18:31,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:18:32,425 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-23 02:18:32,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 642 treesize of output 647 [2021-11-23 02:18:32,506 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-23 02:18:32,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 647 treesize of output 652 [2021-11-23 02:18:33,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-23 02:18:33,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:18:33,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:18:33,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-23 02:18:35,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-23 02:19:09,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:19:09,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:19:09,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:19:09,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-23 02:19:09,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:19:10,004 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-23 02:19:10,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 642 treesize of output 647 [2021-11-23 02:19:10,076 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-23 02:19:10,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 647 treesize of output 652 [2021-11-23 02:19:10,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-23 02:19:10,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2021-11-23 02:19:11,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:19:11,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:19:12,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-23 02:19:58,525 INFO L197 IcfgInterpreter]: Interpreting procedure spinlock_check with input of size 191 for LOIs [2021-11-23 02:19:58,550 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_filter_positive_int with input of size 207 for LOIs [2021-11-23 02:19:59,110 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_assume with input of size 352 for LOIs [2021-11-23 02:19:59,394 INFO L197 IcfgInterpreter]: Interpreting procedure __raw_spin_lock_init with input of size 200 for LOIs [2021-11-23 02:19:59,418 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_final_state with input of size 354 for LOIs [2021-11-23 02:19:59,465 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit with input of size 195 for LOIs [2021-11-23 02:19:59,507 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 188 for LOIs [2021-11-23 02:19:59,885 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_undef_int with input of size 352 for LOIs [2021-11-23 02:20:00,022 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:20:17,391 WARN L227 SmtUtils]: Spent 17.27s on a formula simplification that was a NOOP. DAG size: 1433 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:20:39,660 WARN L227 SmtUtils]: Spent 15.12s on a formula simplification that was a NOOP. DAG size: 1185 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:02,793 WARN L227 SmtUtils]: Spent 22.88s on a formula simplification that was a NOOP. DAG size: 1181 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:38,649 WARN L227 SmtUtils]: Spent 35.58s on a formula simplification that was a NOOP. DAG size: 1185 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:28,211 WARN L227 SmtUtils]: Spent 49.25s on a formula simplification that was a NOOP. DAG size: 1185 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:23:29,894 WARN L227 SmtUtils]: Spent 1.02m on a formula simplification that was a NOOP. DAG size: 1185 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:24:44,085 WARN L227 SmtUtils]: Spent 1.23m on a formula simplification that was a NOOP. DAG size: 1185 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:41,551 WARN L227 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 602 DAG size of output: 361 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:47,927 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 604 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:25:54,763 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 611 DAG size of output: 344 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:26:08,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [480606052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:08,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:26:08,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2021-11-23 02:26:08,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135725122] [2021-11-23 02:26:08,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:08,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-23 02:26:08,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:08,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-23 02:26:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=3170, Unknown=0, NotChecked=0, Total=3540 [2021-11-23 02:26:08,294 INFO L87 Difference]: Start difference. First operand 36882 states and 51685 transitions. Second operand has 55 states, 38 states have (on average 1.105263157894737) internal successors, (42), 32 states have internal predecessors, (42), 14 states have call successors, (18), 8 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 12 states have call successors, (16) [2021-11-23 02:29:28,851 WARN L227 SmtUtils]: Spent 3.33m on a formula simplification. DAG size of input: 1438 DAG size of output: 1437 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)