./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 20:49:19,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 20:49:19,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 20:49:19,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 20:49:19,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 20:49:19,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 20:49:19,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 20:49:19,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 20:49:19,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 20:49:19,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 20:49:19,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 20:49:19,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 20:49:19,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 20:49:19,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 20:49:19,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 20:49:19,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 20:49:19,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 20:49:19,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 20:49:19,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 20:49:19,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 20:49:19,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 20:49:19,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 20:49:19,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 20:49:19,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 20:49:19,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 20:49:19,452 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 20:49:19,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 20:49:19,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 20:49:19,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 20:49:19,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 20:49:19,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 20:49:19,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 20:49:19,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 20:49:19,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 20:49:19,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 20:49:19,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 20:49:19,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 20:49:19,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 20:49:19,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 20:49:19,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 20:49:19,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 20:49:19,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 20:49:19,484 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 20:49:19,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 20:49:19,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 20:49:19,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 20:49:19,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 20:49:19,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 20:49:19,488 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 20:49:19,488 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 20:49:19,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 20:49:19,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 20:49:19,489 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 20:49:19,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 20:49:19,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 20:49:19,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 20:49:19,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 20:49:19,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 20:49:19,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 20:49:19,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 20:49:19,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 20:49:19,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:49:19,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 20:49:19,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 20:49:19,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 20:49:19,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 20:49:19,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 20:49:19,491 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 20:49:19,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 20:49:19,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 20:49:19,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 20:49:19,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a79b35c65887feb0e3310d99b98c096a3638844b86132f83b5aa5c0d07bcad8 [2021-11-06 20:49:19,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 20:49:19,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 20:49:19,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 20:49:19,695 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 20:49:19,696 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 20:49:19,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-06 20:49:19,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f33b974/7093c6f368e1427585c980c0415d7f8a/FLAG0ade8f3a6 [2021-11-06 20:49:20,502 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 20:49:20,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-06 20:49:20,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f33b974/7093c6f368e1427585c980c0415d7f8a/FLAG0ade8f3a6 [2021-11-06 20:49:20,778 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58f33b974/7093c6f368e1427585c980c0415d7f8a [2021-11-06 20:49:20,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 20:49:20,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 20:49:20,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 20:49:20,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 20:49:20,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 20:49:20,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:49:20" (1/1) ... [2021-11-06 20:49:20,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cae3ded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:20, skipping insertion in model container [2021-11-06 20:49:20,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:49:20" (1/1) ... [2021-11-06 20:49:20,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 20:49:20,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 20:49:23,598 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-06 20:49:23,600 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-06 20:49:23,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-06 20:49:23,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-06 20:49:23,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:49:23,683 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 20:49:23,996 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490366,490379] [2021-11-06 20:49:23,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490535,490548] [2021-11-06 20:49:23,997 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490702,490715] [2021-11-06 20:49:23,998 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i[490870,490883] [2021-11-06 20:49:24,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 20:49:24,160 INFO L208 MainTranslator]: Completed translation [2021-11-06 20:49:24,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24 WrapperNode [2021-11-06 20:49:24,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 20:49:24,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 20:49:24,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 20:49:24,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 20:49:24,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:24,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:26,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 20:49:26,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 20:49:26,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 20:49:26,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 20:49:26,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:26,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:27,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:27,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:29,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:29,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:29,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:30,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 20:49:30,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 20:49:30,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 20:49:30,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 20:49:30,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (1/1) ... [2021-11-06 20:49:30,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 20:49:30,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 20:49:30,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 20:49:30,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 20:49:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 20:49:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 20:49:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 20:49:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 20:49:30,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 20:49:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 20:49:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 20:49:30,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 20:49:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 20:49:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 20:49:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 20:49:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 20:49:30,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 20:49:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 20:49:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-06 20:49:30,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 20:57:50,486 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 20:57:50,486 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 20:57:50,487 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-06 20:57:50,487 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#5: ldv_switch_2_#res := 0; [2021-11-06 20:57:50,487 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#6: ldv_switch_2_#res := 0; [2021-11-06 20:57:50,487 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 20:57:50,488 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 20:57:50,488 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 20:57:50,489 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 20:57:50,489 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 20:57:50,497 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 20:57:50,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 20:57:50,552 INFO L299 CfgBuilder]: Removed 17140 assume(true) statements. [2021-11-06 20:57:50,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:57:50 BoogieIcfgContainer [2021-11-06 20:57:50,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 20:57:50,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 20:57:50,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 20:57:50,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 20:57:50,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:49:20" (1/3) ... [2021-11-06 20:57:50,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5af5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:57:50, skipping insertion in model container [2021-11-06 20:57:50,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:49:24" (2/3) ... [2021-11-06 20:57:50,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5af5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:57:50, skipping insertion in model container [2021-11-06 20:57:50,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:57:50" (3/3) ... [2021-11-06 20:57:50,576 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-wireless-rndis_wlan.cil.i [2021-11-06 20:57:50,580 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 20:57:50,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 48 error locations. [2021-11-06 20:57:50,670 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 20:57:50,676 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 20:57:50,677 INFO L340 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2021-11-06 20:57:50,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 21945 states, 21897 states have (on average 1.4209709092569758) internal successors, (31115), 21944 states have internal predecessors, (31115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:57:50,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-06 20:57:50,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:57:50,904 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:57:50,904 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 45 more)] === [2021-11-06 20:57:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:57:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1894068687, now seen corresponding path program 1 times [2021-11-06 20:57:50,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:57:50,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414270332] [2021-11-06 20:57:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:57:50,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:57:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:57:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:57:52,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:57:52,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414270332] [2021-11-06 20:57:52,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414270332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:57:52,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:57:52,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:57:52,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249918556] [2021-11-06 20:57:52,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:57:52,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:57:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:57:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:57:52,127 INFO L87 Difference]: Start difference. First operand has 21945 states, 21897 states have (on average 1.4209709092569758) internal successors, (31115), 21944 states have internal predecessors, (31115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:57:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:57:55,685 INFO L93 Difference]: Finished difference Result 64874 states and 92113 transitions. [2021-11-06 20:57:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:57:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-06 20:57:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:57:55,850 INFO L225 Difference]: With dead ends: 64874 [2021-11-06 20:57:55,850 INFO L226 Difference]: Without dead ends: 41681 [2021-11-06 20:57:55,913 INFO L786 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 [2021-11-06 20:57:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41681 states. [2021-11-06 20:57:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41681 to 41651. [2021-11-06 20:57:56,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41651 states, 41603 states have (on average 1.3962694997956877) internal successors, (58089), 41650 states have internal predecessors, (58089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:57:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41651 states to 41651 states and 58089 transitions. [2021-11-06 20:57:56,885 INFO L78 Accepts]: Start accepts. Automaton has 41651 states and 58089 transitions. Word has length 126 [2021-11-06 20:57:56,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:57:56,887 INFO L470 AbstractCegarLoop]: Abstraction has 41651 states and 58089 transitions. [2021-11-06 20:57:56,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:57:56,888 INFO L276 IsEmpty]: Start isEmpty. Operand 41651 states and 58089 transitions. [2021-11-06 20:57:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-06 20:57:56,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:57:56,898 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:57:56,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 20:57:56,899 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 45 more)] === [2021-11-06 20:57:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:57:56,902 INFO L85 PathProgramCache]: Analyzing trace with hash 901895982, now seen corresponding path program 1 times [2021-11-06 20:57:56,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:57:56,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863718364] [2021-11-06 20:57:56,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:57:56,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:57:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:57:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:57:57,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:57:57,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863718364] [2021-11-06 20:57:57,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863718364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:57:57,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:57:57,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:57:57,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786190416] [2021-11-06 20:57:57,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:57:57,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:57:57,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:57:57,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:57:57,717 INFO L87 Difference]: Start difference. First operand 41651 states and 58089 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:01,496 INFO L93 Difference]: Finished difference Result 98070 states and 136831 transitions. [2021-11-06 20:58:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:01,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-06 20:58:01,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:01,647 INFO L225 Difference]: With dead ends: 98070 [2021-11-06 20:58:01,649 INFO L226 Difference]: Without dead ends: 56711 [2021-11-06 20:58:01,741 INFO L786 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 [2021-11-06 20:58:01,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56711 states. [2021-11-06 20:58:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56711 to 56535. [2021-11-06 20:58:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56535 states, 56487 states have (on average 1.3965868252872342) internal successors, (78889), 56534 states have internal predecessors, (78889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56535 states to 56535 states and 78889 transitions. [2021-11-06 20:58:03,328 INFO L78 Accepts]: Start accepts. Automaton has 56535 states and 78889 transitions. Word has length 151 [2021-11-06 20:58:03,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:03,330 INFO L470 AbstractCegarLoop]: Abstraction has 56535 states and 78889 transitions. [2021-11-06 20:58:03,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 56535 states and 78889 transitions. [2021-11-06 20:58:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 20:58:03,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:03,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:58:03,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 20:58:03,340 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 45 more)] === [2021-11-06 20:58:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2126457933, now seen corresponding path program 1 times [2021-11-06 20:58:03,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:03,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658474944] [2021-11-06 20:58:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:03,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:03,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:03,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658474944] [2021-11-06 20:58:03,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658474944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:03,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:03,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:03,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355902645] [2021-11-06 20:58:03,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:03,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:03,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:03,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:03,881 INFO L87 Difference]: Start difference. First operand 56535 states and 78889 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:07,986 INFO L93 Difference]: Finished difference Result 140987 states and 196849 transitions. [2021-11-06 20:58:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:07,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-06 20:58:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:08,225 INFO L225 Difference]: With dead ends: 140987 [2021-11-06 20:58:08,225 INFO L226 Difference]: Without dead ends: 84744 [2021-11-06 20:58:08,323 INFO L786 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 [2021-11-06 20:58:08,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84744 states. [2021-11-06 20:58:10,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84744 to 84566. [2021-11-06 20:58:10,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84566 states, 84518 states have (on average 1.3972763198371945) internal successors, (118095), 84565 states have internal predecessors, (118095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:10,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84566 states to 84566 states and 118095 transitions. [2021-11-06 20:58:10,347 INFO L78 Accepts]: Start accepts. Automaton has 84566 states and 118095 transitions. Word has length 152 [2021-11-06 20:58:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 20:58:10,348 INFO L470 AbstractCegarLoop]: Abstraction has 84566 states and 118095 transitions. [2021-11-06 20:58:10,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 84566 states and 118095 transitions. [2021-11-06 20:58:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-06 20:58:10,358 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 20:58:10,358 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 20:58:10,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 20:58:10,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 45 more)] === [2021-11-06 20:58:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 20:58:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1134568620, now seen corresponding path program 1 times [2021-11-06 20:58:10,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 20:58:10,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434987276] [2021-11-06 20:58:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 20:58:10,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 20:58:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 20:58:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 20:58:11,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 20:58:11,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434987276] [2021-11-06 20:58:11,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434987276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 20:58:11,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 20:58:11,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 20:58:11,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421984483] [2021-11-06 20:58:11,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 20:58:11,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 20:58:11,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 20:58:11,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 20:58:11,090 INFO L87 Difference]: Start difference. First operand 84566 states and 118095 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 20:58:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 20:58:15,786 INFO L93 Difference]: Finished difference Result 224534 states and 313666 transitions. [2021-11-06 20:58:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 20:58:15,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-06 20:58:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 20:58:16,336 INFO L225 Difference]: With dead ends: 224534 [2021-11-06 20:58:16,336 INFO L226 Difference]: Without dead ends: 140260 [2021-11-06 20:58:16,446 INFO L786 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 [2021-11-06 20:58:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140260 states.