./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fcb8e130 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.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 4b4d1109d3d8d53e29825c3b476b87cdd6fec06f9f511afc6c3035bd20ad8bf5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-fcb8e13 [2021-11-23 03:15:57,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:15:57,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:15:57,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:15:57,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:15:57,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:15:57,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:15:57,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:15:57,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:15:57,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:15:57,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:15:57,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:15:57,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:15:57,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:15:57,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:15:57,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:15:57,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:15:57,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:15:57,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:15:57,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:15:57,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:15:57,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:15:57,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:15:57,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:15:57,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:15:57,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:15:57,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:15:57,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:15:57,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:15:57,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:15:57,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:15:57,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:15:57,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:15:57,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:15:57,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:15:57,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:15:57,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:15:57,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:15:57,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:15:57,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:15:57,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:15:57,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 03:15:57,681 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:15:57,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:15:57,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:15:57,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:15:57,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:15:57,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:15:57,683 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 03:15:57,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:15:57,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:15:57,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:15:57,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:15:57,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:15:57,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:15:57,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:15:57,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:15:57,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:15:57,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:15:57,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:15:57,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:15:57,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:15:57,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:15:57,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:15:57,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:15:57,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 03:15:57,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:15:57,687 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 03:15:57,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 03:15:57,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:15:57,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:15:57,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b4d1109d3d8d53e29825c3b476b87cdd6fec06f9f511afc6c3035bd20ad8bf5 [2021-11-23 03:15:57,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:15:57,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:15:57,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:15:57,904 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:15:57,905 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:15:57,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i [2021-11-23 03:15:57,962 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd12724d/c77c564e36e34013a86e314a5d0e7395/FLAG682bfaebc [2021-11-23 03:15:58,746 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:15:58,747 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i [2021-11-23 03:15:58,808 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd12724d/c77c564e36e34013a86e314a5d0e7395/FLAG682bfaebc [2021-11-23 03:15:59,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd12724d/c77c564e36e34013a86e314a5d0e7395 [2021-11-23 03:15:59,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:15:59,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:15:59,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:15:59,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:15:59,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:15:59,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:59" (1/1) ... [2021-11-23 03:15:59,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566a884d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:59, skipping insertion in model container [2021-11-23 03:15:59,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:59" (1/1) ... [2021-11-23 03:15:59,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:15:59,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:16:05,627 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[800980,800993] [2021-11-23 03:16:05,630 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801146,801159] [2021-11-23 03:16:05,632 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801310,801323] [2021-11-23 03:16:05,633 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801475,801488] [2021-11-23 03:16:05,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:05,713 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:16:06,228 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[800980,800993] [2021-11-23 03:16:06,229 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801146,801159] [2021-11-23 03:16:06,230 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801310,801323] [2021-11-23 03:16:06,230 WARN L230 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-linux-3.14/linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i[801475,801488] [2021-11-23 03:16:06,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:16:06,499 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:16:06,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06 WrapperNode [2021-11-23 03:16:06,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:16:06,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:16:06,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:16:06,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:16:06,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:06,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:10,202 INFO L137 Inliner]: procedures = 733, calls = 11128, calls flagged for inlining = 2244, calls inlined = 13391, statements flattened = 239137 [2021-11-23 03:16:10,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:16:10,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:16:10,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:16:10,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:16:10,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:10,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:10,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:10,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:13,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:14,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:14,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:15,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:16:15,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:16:15,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:16:15,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:16:15,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (1/1) ... [2021-11-23 03:16:15,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:16:15,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-23 03:16:15,073 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) [2021-11-23 03:16:15,099 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 [2021-11-23 03:16:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_cfg_register [2021-11-23 03:16:15,114 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_cfg_register [2021-11-23 03:16:15,114 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-23 03:16:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_open_35_6 [2021-11-23 03:16:15,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_open_35_6 [2021-11-23 03:16:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_add_mesh [2021-11-23 03:16:15,115 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_add_mesh [2021-11-23 03:16:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer_20 [2021-11-23 03:16:15,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer_20 [2021-11-23 03:16:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 03:16:15,115 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-23 03:16:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:16:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure auto_deepsleep_timer_fn [2021-11-23 03:16:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure auto_deepsleep_timer_fn [2021-11-23 03:16:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_eth_stop [2021-11-23 03:16:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_eth_stop [2021-11-23 03:16:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_start_mesh [2021-11-23 03:16:15,116 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_start_mesh [2021-11-23 03:16:15,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:16:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_instance_callback_28_2 [2021-11-23 03:16:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_instance_callback_28_2 [2021-11-23 03:16:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:16:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:16:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:16:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev [2021-11-23 03:16:15,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev [2021-11-23 03:16:15,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-23 03:16:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-23 03:16:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:16:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_stop [2021-11-23 03:16:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_stop [2021-11-23 03:16:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_mesh_dev_open [2021-11-23 03:16:15,118 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_mesh_dev_open [2021-11-23 03:16:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:16:15,118 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:16:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:16:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:16:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-23 03:16:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-23 03:16:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:16:15,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:16:15,119 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_resume [2021-11-23 03:16:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_resume [2021-11-23 03:16:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_dev_open [2021-11-23 03:16:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_dev_open [2021-11-23 03:16:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:16:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:16:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_suspend [2021-11-23 03:16:15,120 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_suspend [2021-11-23 03:16:15,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_15 [2021-11-23 03:16:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_15 [2021-11-23 03:16:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_thread [2021-11-23 03:16:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_thread [2021-11-23 03:16:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_14 [2021-11-23 03:16:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_14 [2021-11-23 03:16:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:16:15,121 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_set_deep_sleep [2021-11-23 03:16:15,121 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_set_deep_sleep [2021-11-23 03:16:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:16:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:16:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_start_card [2021-11-23 03:16:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_start_card [2021-11-23 03:16:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_process_event [2021-11-23 03:16:15,122 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_process_event [2021-11-23 03:16:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:16:15,122 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_stop_iface [2021-11-23 03:16:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_stop_iface [2021-11-23 03:16:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dispatch_instance_register_33_2 [2021-11-23 03:16:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dispatch_instance_register_33_2 [2021-11-23 03:16:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_start_iface [2021-11-23 03:16:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_start_iface [2021-11-23 03:16:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_timer_instance_28 [2021-11-23 03:16:15,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_timer_instance_28 [2021-11-23 03:16:15,123 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-23 03:16:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:16:17,434 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:16:17,436 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:22:25,691 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-23 03:22:25,691 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_entry_EMGentry_38_returnLabel#1: assume { :end_inline_ldv_entry_EMGentry_38 } true;main_#res#1 := 0; [2021-11-23 03:22:25,691 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L23153: #t~ret4333#1 := main_#res#1;assume { :end_inline_main } true; [2021-11-23 03:22:38,339 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:22:38,457 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:22:38,458 INFO L301 CfgBuilder]: Removed 3313 assume(true) statements. [2021-11-23 03:22:38,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:38 BoogieIcfgContainer [2021-11-23 03:22:38,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:22:38,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:22:38,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:22:38,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:22:38,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:15:59" (1/3) ... [2021-11-23 03:22:38,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c92a257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:38, skipping insertion in model container [2021-11-23 03:22:38,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:16:06" (2/3) ... [2021-11-23 03:22:38,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c92a257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:22:38, skipping insertion in model container [2021-11-23 03:22:38,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:22:38" (3/3) ... [2021-11-23 03:22:38,505 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_linux-kernel-locking-mutex_drivers-net-wireless-libertas-libertas.cil.i [2021-11-23 03:22:38,512 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:22:38,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-23 03:22:38,650 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:22:38,655 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 [2021-11-23 03:22:38,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-23 03:22:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 54309 states, 54228 states have (on average 1.47016301541639) internal successors, (79724), 54241 states have internal predecessors, (79724), 42 states have call successors, (42), 27 states have call predecessors, (42), 27 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-23 03:22:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 03:22:39,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:39,211 INFO L514 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] [2021-11-23 03:22:39,211 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [lbs_threadErr0ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr1ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:22:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1832012247, now seen corresponding path program 1 times [2021-11-23 03:22:39,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:22:39,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276524309] [2021-11-23 03:22:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:39,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:22:40,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:22:40,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276524309] [2021-11-23 03:22:40,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276524309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:40,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:40,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:22:40,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145396824] [2021-11-23 03:22:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:40,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:22:40,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:22:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:22:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:22:40,509 INFO L87 Difference]: Start difference. First operand has 54309 states, 54228 states have (on average 1.47016301541639) internal successors, (79724), 54241 states have internal predecessors, (79724), 42 states have call successors, (42), 27 states have call predecessors, (42), 27 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-11-23 03:22:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:42,360 INFO L93 Difference]: Finished difference Result 101918 states and 149592 transitions. [2021-11-23 03:22:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:22:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2021-11-23 03:22:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:42,574 INFO L225 Difference]: With dead ends: 101918 [2021-11-23 03:22:42,574 INFO L226 Difference]: Without dead ends: 47084 [2021-11-23 03:22:42,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:22:42,917 INFO L933 BasicCegarLoop]: 59794 mSDtfsCounter, 24 mSDsluCounter, 59759 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 119553 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:42,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 119553 Invalid, 6 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:22:43,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47084 states. [2021-11-23 03:22:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47084 to 47084. [2021-11-23 03:22:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47084 states, 47003 states have (on average 1.2481969236006212) internal successors, (58669), 47016 states have internal predecessors, (58669), 42 states have call successors, (42), 27 states have call predecessors, (42), 27 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-23 03:22:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47084 states to 47084 states and 58753 transitions. [2021-11-23 03:22:44,212 INFO L78 Accepts]: Start accepts. Automaton has 47084 states and 58753 transitions. Word has length 23 [2021-11-23 03:22:44,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:44,212 INFO L470 AbstractCegarLoop]: Abstraction has 47084 states and 58753 transitions. [2021-11-23 03:22:44,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 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) [2021-11-23 03:22:44,213 INFO L276 IsEmpty]: Start isEmpty. Operand 47084 states and 58753 transitions. [2021-11-23 03:22:44,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:22:44,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:44,215 INFO L514 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] [2021-11-23 03:22:44,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:22:44,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [lbs_threadErr0ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr1ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:22:44,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1620153423, now seen corresponding path program 1 times [2021-11-23 03:22:44,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:22:44,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365204110] [2021-11-23 03:22:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:44,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:22:45,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:22:45,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365204110] [2021-11-23 03:22:45,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365204110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:45,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:45,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:22:45,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092870502] [2021-11-23 03:22:45,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:45,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:22:45,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:22:45,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:22:45,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:22:45,062 INFO L87 Difference]: Start difference. First operand 47084 states and 58753 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-23 03:22:46,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:46,355 INFO L93 Difference]: Finished difference Result 47084 states and 58753 transitions. [2021-11-23 03:22:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:22:46,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-23 03:22:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:46,456 INFO L225 Difference]: With dead ends: 47084 [2021-11-23 03:22:46,456 INFO L226 Difference]: Without dead ends: 47080 [2021-11-23 03:22:46,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:22:46,482 INFO L933 BasicCegarLoop]: 58745 mSDtfsCounter, 58727 mSDsluCounter, 58729 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58727 SdHoareTripleChecker+Valid, 117474 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:46,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58727 Valid, 117474 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:22:46,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47080 states. [2021-11-23 03:22:47,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47080 to 47080. [2021-11-23 03:22:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47080 states, 47001 states have (on average 1.2481649326610071) internal successors, (58665), 47012 states have internal predecessors, (58665), 42 states have call successors, (42), 27 states have call predecessors, (42), 27 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-23 03:22:47,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47080 states to 47080 states and 58749 transitions. [2021-11-23 03:22:47,370 INFO L78 Accepts]: Start accepts. Automaton has 47080 states and 58749 transitions. Word has length 27 [2021-11-23 03:22:47,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:47,371 INFO L470 AbstractCegarLoop]: Abstraction has 47080 states and 58749 transitions. [2021-11-23 03:22:47,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-23 03:22:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 47080 states and 58749 transitions. [2021-11-23 03:22:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:22:47,373 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:47,374 INFO L514 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] [2021-11-23 03:22:47,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:22:47,374 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [lbs_threadErr0ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr1ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:22:47,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:47,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2103652078, now seen corresponding path program 1 times [2021-11-23 03:22:47,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:22:47,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203760179] [2021-11-23 03:22:47,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:47,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:22:48,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:22:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203760179] [2021-11-23 03:22:48,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203760179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:48,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:48,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:22:48,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639311864] [2021-11-23 03:22:48,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:48,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:22:48,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:22:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:22:48,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:22:48,165 INFO L87 Difference]: Start difference. First operand 47080 states and 58749 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-23 03:22:49,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:22:49,482 INFO L93 Difference]: Finished difference Result 47080 states and 58749 transitions. [2021-11-23 03:22:49,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:22:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2021-11-23 03:22:49,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:22:49,586 INFO L225 Difference]: With dead ends: 47080 [2021-11-23 03:22:49,587 INFO L226 Difference]: Without dead ends: 47076 [2021-11-23 03:22:49,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:22:49,613 INFO L933 BasicCegarLoop]: 58741 mSDtfsCounter, 58719 mSDsluCounter, 58727 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58719 SdHoareTripleChecker+Valid, 117468 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:22:49,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58719 Valid, 117468 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:22:49,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47076 states. [2021-11-23 03:22:50,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47076 to 47076. [2021-11-23 03:22:50,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47076 states, 46999 states have (on average 1.2481329389987021) internal successors, (58661), 47008 states have internal predecessors, (58661), 42 states have call successors, (42), 27 states have call predecessors, (42), 27 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-23 03:22:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47076 states to 47076 states and 58745 transitions. [2021-11-23 03:22:50,564 INFO L78 Accepts]: Start accepts. Automaton has 47076 states and 58745 transitions. Word has length 29 [2021-11-23 03:22:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:22:50,565 INFO L470 AbstractCegarLoop]: Abstraction has 47076 states and 58745 transitions. [2021-11-23 03:22:50,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2021-11-23 03:22:50,565 INFO L276 IsEmpty]: Start isEmpty. Operand 47076 states and 58745 transitions. [2021-11-23 03:22:50,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 03:22:50,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:22:50,567 INFO L514 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] [2021-11-23 03:22:50,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:22:50,568 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [lbs_threadErr0ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr1ASSERT_VIOLATIONERROR_FUNCTION, lbs_threadErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-23 03:22:50,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:22:50,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1321986645, now seen corresponding path program 1 times [2021-11-23 03:22:50,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 03:22:50,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128599586] [2021-11-23 03:22:50,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:22:50,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:22:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:22:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:22:51,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 03:22:51,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128599586] [2021-11-23 03:22:51,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128599586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:22:51,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:22:51,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:22:51,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153132491] [2021-11-23 03:22:51,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:22:51,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:22:51,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 03:22:51,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:22:51,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:22:51,332 INFO L87 Difference]: Start difference. First operand 47076 states and 58745 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 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)