./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.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 2ed7e65f4873f721e135371f2b64bea53a61355f60220cd3c965b9b34f2d17e4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 19:00:51,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 19:00:51,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 19:00:51,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 19:00:51,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 19:00:51,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 19:00:51,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 19:00:51,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 19:00:51,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 19:00:51,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 19:00:51,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 19:00:51,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 19:00:51,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 19:00:51,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 19:00:51,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 19:00:51,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 19:00:51,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 19:00:51,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 19:00:51,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 19:00:51,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 19:00:51,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 19:00:51,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 19:00:51,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 19:00:51,722 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 19:00:51,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 19:00:51,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 19:00:51,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 19:00:51,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 19:00:51,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 19:00:51,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 19:00:51,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 19:00:51,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 19:00:51,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 19:00:51,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 19:00:51,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 19:00:51,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 19:00:51,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 19:00:51,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 19:00:51,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 19:00:51,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 19:00:51,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 19:00:51,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 19:00:51,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 19:00:51,771 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 19:00:51,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 19:00:51,772 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 19:00:51,773 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 19:00:51,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 19:00:51,773 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 19:00:51,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 19:00:51,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 19:00:51,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 19:00:51,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 19:00:51,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 19:00:51,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 19:00:51,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 19:00:51,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 19:00:51,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 19:00:51,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 19:00:51,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 19:00:51,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 19:00:51,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:00:51,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 19:00:51,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 19:00:51,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 19:00:51,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 19:00:51,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 19:00:51,778 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 19:00:51,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 19:00:51,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 19:00:51,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 19:00:51,779 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ed7e65f4873f721e135371f2b64bea53a61355f60220cd3c965b9b34f2d17e4 [2021-11-06 19:00:51,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 19:00:52,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 19:00:52,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 19:00:52,014 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 19:00:52,014 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 19:00:52,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-06 19:00:52,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dc0bbfe/5547227df9f54a4b9e9e628ce5894314/FLAGbc686e43e [2021-11-06 19:00:52,933 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 19:00:52,934 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-06 19:00:53,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dc0bbfe/5547227df9f54a4b9e9e628ce5894314/FLAGbc686e43e [2021-11-06 19:00:53,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1dc0bbfe/5547227df9f54a4b9e9e628ce5894314 [2021-11-06 19:00:53,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 19:00:53,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 19:00:53,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 19:00:53,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 19:00:53,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 19:00:53,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:53" (1/1) ... [2021-11-06 19:00:53,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467a8fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:53, skipping insertion in model container [2021-11-06 19:00:53,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:53" (1/1) ... [2021-11-06 19:00:53,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 19:00:53,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 19:00:57,550 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464820,464833] [2021-11-06 19:00:57,553 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464989,465002] [2021-11-06 19:00:57,554 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465156,465169] [2021-11-06 19:00:57,554 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465324,465337] [2021-11-06 19:00:57,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:00:57,650 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 19:00:57,999 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464820,464833] [2021-11-06 19:00:58,000 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[464989,465002] [2021-11-06 19:00:58,000 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465156,465169] [2021-11-06 19:00:58,001 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-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i[465324,465337] [2021-11-06 19:00:58,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 19:00:58,310 INFO L208 MainTranslator]: Completed translation [2021-11-06 19:00:58,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58 WrapperNode [2021-11-06 19:00:58,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 19:00:58,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 19:00:58,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 19:00:58,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 19:00:58,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:00:58,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:12,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 19:01:12,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 19:01:12,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 19:01:12,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 19:01:12,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:12,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:14,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:14,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:18,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:18,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:19,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:20,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 19:01:20,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 19:01:20,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 19:01:20,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 19:01:20,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (1/1) ... [2021-11-06 19:01:20,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 19:01:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 19:01:20,476 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 19:01:20,499 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 19:01:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-06 19:01:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 19:01:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure netif_receive_skb [2021-11-06 19:01:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 19:01:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 19:01:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 19:01:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 19:01:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 19:01:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 19:01:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 19:01:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 19:01:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 19:01:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 19:01:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 19:01:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 19:01:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 19:01:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 19:03:08,356 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#2: ldv_switch_2_#res := 0; [2021-11-06 19:03:08,357 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#3: ldv_switch_2_#res := 0; [2021-11-06 19:03:08,357 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break#4: ldv_switch_2_#res := 0; [2021-11-06 19:03:08,358 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break#2: ldv_switch_4_#res := 0; [2021-11-06 19:03:08,358 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break#2: ldv_switch_0_#res := 0; [2021-11-06 19:03:08,359 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_2_switch_break: ldv_switch_2_#res := 0; [2021-11-06 19:03:08,362 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_0_switch_break: ldv_switch_0_#res := 0; [2021-11-06 19:03:08,363 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_3_switch_break: ldv_switch_3_#res := 0; [2021-11-06 19:03:08,363 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#2: ldv_switch_1_#res := 0; [2021-11-06 19:03:08,363 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break#3: ldv_switch_1_#res := 0; [2021-11-06 19:03:08,363 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_1_switch_break: ldv_switch_1_#res := 0; [2021-11-06 19:03:08,363 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-06 19:03:08,381 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_switch_4_switch_break: ldv_switch_4_#res := 0; [2021-11-06 19:03:08,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 19:03:08,516 INFO L299 CfgBuilder]: Removed 83122 assume(true) statements. [2021-11-06 19:03:08,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:08 BoogieIcfgContainer [2021-11-06 19:03:08,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 19:03:08,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 19:03:08,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 19:03:08,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 19:03:08,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:00:53" (1/3) ... [2021-11-06 19:03:08,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449d0eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:08, skipping insertion in model container [2021-11-06 19:03:08,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:58" (2/3) ... [2021-11-06 19:03:08,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449d0eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:08, skipping insertion in model container [2021-11-06 19:03:08,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:08" (3/3) ... [2021-11-06 19:03:08,572 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-jme.cil.i [2021-11-06 19:03:08,576 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 19:03:08,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 209 error locations. [2021-11-06 19:03:08,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 19:03:08,757 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 19:03:08,757 INFO L340 AbstractCegarLoop]: Starting to check reachability of 209 error locations. [2021-11-06 19:03:09,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 51912 states, 51703 states have (on average 1.212018644952904) internal successors, (62665), 51911 states have internal predecessors, (62665), 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 19:03:09,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 19:03:09,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:03:09,307 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] [2021-11-06 19:03:09,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 206 more)] === [2021-11-06 19:03:09,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:03:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash -175559766, now seen corresponding path program 1 times [2021-11-06 19:03:09,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:03:09,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246032911] [2021-11-06 19:03:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:03:09,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:03:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:03:09,925 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 19:03:09,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:03:09,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246032911] [2021-11-06 19:03:09,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246032911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:03:09,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:03:09,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:03:09,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67603971] [2021-11-06 19:03:09,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:03:09,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:03:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:03:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:03:10,034 INFO L87 Difference]: Start difference. First operand has 51912 states, 51703 states have (on average 1.212018644952904) internal successors, (62665), 51911 states have internal predecessors, (62665), 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 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 19:03:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:03:15,349 INFO L93 Difference]: Finished difference Result 154546 states and 186446 transitions. [2021-11-06 19:03:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:03:15,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2021-11-06 19:03:15,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:03:15,851 INFO L225 Difference]: With dead ends: 154546 [2021-11-06 19:03:15,851 INFO L226 Difference]: Without dead ends: 102166 [2021-11-06 19:03:16,046 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 19:03:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102166 states. [2021-11-06 19:03:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102166 to 101850. [2021-11-06 19:03:19,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101850 states, 101641 states have (on average 1.1969874361724107) internal successors, (121663), 101849 states have internal predecessors, (121663), 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 19:03:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101850 states to 101850 states and 121663 transitions. [2021-11-06 19:03:19,825 INFO L78 Accepts]: Start accepts. Automaton has 101850 states and 121663 transitions. Word has length 72 [2021-11-06 19:03:19,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:03:19,826 INFO L470 AbstractCegarLoop]: Abstraction has 101850 states and 121663 transitions. [2021-11-06 19:03:19,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 19:03:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 101850 states and 121663 transitions. [2021-11-06 19:03:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 19:03:19,837 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:03:19,838 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] [2021-11-06 19:03:19,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 19:03:19,838 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr93ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 206 more)] === [2021-11-06 19:03:19,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:03:19,843 INFO L85 PathProgramCache]: Analyzing trace with hash -127627591, now seen corresponding path program 1 times [2021-11-06 19:03:19,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:03:19,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194039756] [2021-11-06 19:03:19,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:03:19,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:03:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:03:20,141 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 19:03:20,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:03:20,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194039756] [2021-11-06 19:03:20,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194039756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:03:20,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:03:20,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:03:20,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225050160] [2021-11-06 19:03:20,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:03:20,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:03:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:03:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:03:20,146 INFO L87 Difference]: Start difference. First operand 101850 states and 121663 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 19:03:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:03:25,457 INFO L93 Difference]: Finished difference Result 227456 states and 271831 transitions. [2021-11-06 19:03:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:03:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2021-11-06 19:03:25,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:03:26,034 INFO L225 Difference]: With dead ends: 227456 [2021-11-06 19:03:26,034 INFO L226 Difference]: Without dead ends: 125754 [2021-11-06 19:03:26,317 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 19:03:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125754 states. [2021-11-06 19:03:28,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125754 to 125420. [2021-11-06 19:03:29,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125420 states, 125211 states have (on average 1.197953853894626) internal successors, (149997), 125419 states have internal predecessors, (149997), 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 19:03:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125420 states to 125420 states and 149997 transitions. [2021-11-06 19:03:29,583 INFO L78 Accepts]: Start accepts. Automaton has 125420 states and 149997 transitions. Word has length 78 [2021-11-06 19:03:29,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:03:29,586 INFO L470 AbstractCegarLoop]: Abstraction has 125420 states and 149997 transitions. [2021-11-06 19:03:29,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 19:03:29,600 INFO L276 IsEmpty]: Start isEmpty. Operand 125420 states and 149997 transitions. [2021-11-06 19:03:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 19:03:29,602 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:03:29,602 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] [2021-11-06 19:03:29,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 19:03:29,603 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 206 more)] === [2021-11-06 19:03:29,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:03:29,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1742447139, now seen corresponding path program 1 times [2021-11-06 19:03:29,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:03:29,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809555615] [2021-11-06 19:03:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:03:29,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:03:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:03:29,745 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 19:03:29,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:03:29,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809555615] [2021-11-06 19:03:29,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809555615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:03:29,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:03:29,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:03:29,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582560102] [2021-11-06 19:03:29,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:03:29,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:03:29,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:03:29,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:03:29,748 INFO L87 Difference]: Start difference. First operand 125420 states and 149997 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 19:03:35,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 19:03:35,805 INFO L93 Difference]: Finished difference Result 371058 states and 443497 transitions. [2021-11-06 19:03:35,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 19:03:35,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2021-11-06 19:03:35,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 19:03:36,746 INFO L225 Difference]: With dead ends: 371058 [2021-11-06 19:03:36,746 INFO L226 Difference]: Without dead ends: 245786 [2021-11-06 19:03:37,023 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 19:03:37,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245786 states. [2021-11-06 19:03:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245786 to 243142. [2021-11-06 19:03:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243142 states, 242933 states have (on average 1.1973218953373976) internal successors, (290869), 243141 states have internal predecessors, (290869), 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 19:03:43,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243142 states to 243142 states and 290869 transitions. [2021-11-06 19:03:43,171 INFO L78 Accepts]: Start accepts. Automaton has 243142 states and 290869 transitions. Word has length 79 [2021-11-06 19:03:43,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 19:03:43,172 INFO L470 AbstractCegarLoop]: Abstraction has 243142 states and 290869 transitions. [2021-11-06 19:03:43,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 19:03:43,172 INFO L276 IsEmpty]: Start isEmpty. Operand 243142 states and 290869 transitions. [2021-11-06 19:03:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 19:03:43,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 19:03:43,174 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] [2021-11-06 19:03:43,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 19:03:43,175 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr79ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 206 more)] === [2021-11-06 19:03:43,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 19:03:43,175 INFO L85 PathProgramCache]: Analyzing trace with hash -957328064, now seen corresponding path program 1 times [2021-11-06 19:03:43,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 19:03:43,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330785976] [2021-11-06 19:03:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 19:03:43,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 19:03:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 19:03:43,388 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 19:03:43,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 19:03:43,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330785976] [2021-11-06 19:03:43,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330785976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 19:03:43,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 19:03:43,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 19:03:43,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203924593] [2021-11-06 19:03:43,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 19:03:43,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 19:03:43,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 19:03:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 19:03:43,397 INFO L87 Difference]: Start difference. First operand 243142 states and 290869 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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)