./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:46:21,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:46:21,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:46:21,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:46:21,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:46:21,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:46:21,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:46:21,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:46:21,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:46:21,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:46:21,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:46:21,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:46:21,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:46:21,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:46:21,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:46:21,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:46:21,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:46:21,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:46:21,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:46:21,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:46:21,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:46:21,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:46:21,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:46:21,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:46:21,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:46:21,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:46:21,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:46:21,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:46:21,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:46:21,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:46:21,187 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:46:21,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:46:21,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:46:21,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:46:21,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:46:21,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:46:21,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:46:21,191 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:46:21,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:46:21,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:46:21,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:46:21,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:46:21,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:46:21,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:46:21,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:46:21,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:46:21,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:46:21,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:46:21,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:46:21,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:46:21,222 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:46:21,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:46:21,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:46:21,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:46:21,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:46:21,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:46:21,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:46:21,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:46:21,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:46:21,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:46:21,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:46:21,224 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:46:21,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:46:21,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:46:21,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:46:21,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:46:21,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:21,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:46:21,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:46:21,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:46:21,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:46:21,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:46:21,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:46:21,226 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:46:21,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:46:21,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:46:21,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 [2021-12-15 10:46:21,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:46:21,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:46:21,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:46:21,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:46:21,427 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:46:21,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-12-15 10:46:21,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9781fdbf/1f29f86423e94f66ad4d6ab4f21ce873/FLAG6f9678be5 [2021-12-15 10:46:21,831 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:46:21,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-12-15 10:46:21,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9781fdbf/1f29f86423e94f66ad4d6ab4f21ce873/FLAG6f9678be5 [2021-12-15 10:46:21,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9781fdbf/1f29f86423e94f66ad4d6ab4f21ce873 [2021-12-15 10:46:21,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:46:21,854 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:46:21,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:21,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:46:21,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:46:21,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:21" (1/1) ... [2021-12-15 10:46:21,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c17b341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:21, skipping insertion in model container [2021-12-15 10:46:21,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:21" (1/1) ... [2021-12-15 10:46:21,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:46:21,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:46:22,184 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/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-12-15 10:46:22,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:22,196 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:46:22,235 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/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-12-15 10:46:22,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:22,259 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:46:22,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22 WrapperNode [2021-12-15 10:46:22,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:22,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:22,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:46:22,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:46:22,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,303 INFO L137 Inliner]: procedures = 126, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 174 [2021-12-15 10:46:22,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:22,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:46:22,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:46:22,306 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:46:22,311 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:46:22,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:46:22,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:46:22,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:46:22,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:22" (1/1) ... [2021-12-15 10:46:22,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:22,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:46:22,358 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) [2021-12-15 10:46:22,366 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 [2021-12-15 10:46:22,395 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-15 10:46:22,395 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-15 10:46:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:46:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:46:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:46:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:46:22,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 10:46:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 10:46:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:46:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:46:22,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:46:22,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:46:22,474 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:46:22,482 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:46:22,488 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:46:22,491 INFO L158 Benchmark]: Toolchain (without parser) took 637.10ms. Allocated memory is still 121.6MB. Free memory was 89.1MB in the beginning and 77.1MB in the end (delta: 12.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:22,492 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 43.8MB in the beginning and 43.7MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:46:22,492 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.17ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 88.3MB in the end (delta: 580.5kB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-12-15 10:46:22,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.60ms. Allocated memory is still 121.6MB. Free memory was 88.3MB in the beginning and 86.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:22,494 INFO L158 Benchmark]: Boogie Preprocessor took 21.55ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 84.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:22,494 INFO L158 Benchmark]: RCFGBuilder took 162.72ms. Allocated memory is still 121.6MB. Free memory was 84.1MB in the beginning and 77.1MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:46:22,497 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory was 43.8MB in the beginning and 43.7MB in the end (delta: 40.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.17ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 88.3MB in the end (delta: 580.5kB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.60ms. Allocated memory is still 121.6MB. Free memory was 88.3MB in the beginning and 86.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.55ms. Allocated memory is still 121.6MB. Free memory was 86.1MB in the beginning and 84.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 162.72ms. Allocated memory is still 121.6MB. Free memory was 84.1MB in the beginning and 77.1MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:46:22,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/list-ext2-properties/simple_and_skiplist_2lvl-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 32bit --witnessprinter.graph.data.programhash e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:46:24,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:46:24,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:46:24,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:46:24,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:46:24,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:46:24,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:46:24,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:46:24,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:46:24,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:46:24,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:46:24,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:46:24,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:46:24,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:46:24,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:46:24,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:46:24,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:46:24,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:46:24,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:46:24,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:46:24,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:46:24,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:46:24,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:46:24,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:46:24,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:46:24,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:46:24,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:46:24,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:46:24,352 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:46:24,353 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:46:24,353 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:46:24,354 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:46:24,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:46:24,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:46:24,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:46:24,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:46:24,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:46:24,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:46:24,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:46:24,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:46:24,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:46:24,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:46:24,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:46:24,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:46:24,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:46:24,395 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:46:24,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:46:24,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:46:24,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:46:24,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:46:24,397 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:46:24,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:46:24,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:46:24,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:46:24,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:46:24,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:46:24,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:46:24,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:46:24,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:46:24,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:46:24,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:46:24,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:24,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:46:24,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:46:24,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:46:24,405 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:46:24,405 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:46:24,406 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:46:24,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:46:24,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:46:24,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:46:24,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:46:24,406 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e99503bfcf6201b20e9e96de963aa687998a61153cfad44b7458729e6b441ff2 [2021-12-15 10:46:24,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:46:24,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:46:24,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:46:24,679 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:46:24,679 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:46:24,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-12-15 10:46:24,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323a18a60/568b11bb701e4431832d595f43aa97d6/FLAGd223937fe [2021-12-15 10:46:25,130 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:46:25,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2021-12-15 10:46:25,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323a18a60/568b11bb701e4431832d595f43aa97d6/FLAGd223937fe [2021-12-15 10:46:25,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323a18a60/568b11bb701e4431832d595f43aa97d6 [2021-12-15 10:46:25,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:46:25,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:46:25,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:25,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:46:25,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:46:25,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:25,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530c7e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25, skipping insertion in model container [2021-12-15 10:46:25,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:25,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:46:25,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:46:25,868 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/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-12-15 10:46:25,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:25,894 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:46:25,944 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/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2021-12-15 10:46:25,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:25,976 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:46:25,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25 WrapperNode [2021-12-15 10:46:25,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:25,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:25,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:46:25,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:46:25,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,034 INFO L137 Inliner]: procedures = 129, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 160 [2021-12-15 10:46:26,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:26,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:46:26,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:46:26,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:46:26,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:46:26,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:46:26,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:46:26,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:46:26,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:25" (1/1) ... [2021-12-15 10:46:26,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:26,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:46:26,132 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) [2021-12-15 10:46:26,143 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 [2021-12-15 10:46:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-15 10:46:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-15 10:46:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 10:46:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:46:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:46:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 10:46:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 10:46:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 10:46:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:46:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:46:26,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:46:26,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:46:26,268 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:46:26,270 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:46:26,275 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.getTrivialTransFormula(TransFormulaBuilder.java:285) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.removeAuxiliaryGoto(CfgBuilder.java:962) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$ProcedureCfgBuilder.buildProcedureCfgFromImplementation(CfgBuilder.java:727) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:266) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:46:26,278 INFO L158 Benchmark]: Toolchain (without parser) took 773.18ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.2MB in the beginning and 37.8MB in the end (delta: -9.7MB). Peak memory consumption was 1.9MB. Max. memory is 16.1GB. [2021-12-15 10:46:26,278 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:46:26,279 INFO L158 Benchmark]: CACSL2BoogieTranslator took 472.03ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 37.1MB in the end (delta: -9.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-12-15 10:46:26,279 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.50ms. Allocated memory is still 62.9MB. Free memory was 37.1MB in the beginning and 34.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:26,280 INFO L158 Benchmark]: Boogie Preprocessor took 57.20ms. Allocated memory is still 62.9MB. Free memory was 34.7MB in the beginning and 44.7MB in the end (delta: -10.0MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-12-15 10:46:26,280 INFO L158 Benchmark]: RCFGBuilder took 183.12ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 37.8MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 10:46:26,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 52.4MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 472.03ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.0MB in the beginning and 37.1MB in the end (delta: -9.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.50ms. Allocated memory is still 62.9MB. Free memory was 37.1MB in the beginning and 34.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.20ms. Allocated memory is still 62.9MB. Free memory was 34.7MB in the beginning and 44.7MB in the end (delta: -10.0MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * RCFGBuilder took 183.12ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 37.8MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:46:26,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable