./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-simple/dll2c_update_all_reverse.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-simple/dll2c_update_all_reverse.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 5247496942546516118f3c28fa350944e097bdf15ee64734ca287a29ad51a034 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:46:50,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:46:50,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:46:50,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:46:50,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:46:50,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:46:50,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:46:50,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:46:50,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:46:50,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:46:50,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:46:50,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:46:50,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:46:50,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:46:50,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:46:50,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:46:50,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:46:50,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:46:50,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:46:50,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:46:50,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:46:50,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:46:50,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:46:50,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:46:50,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:46:50,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:46:50,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:46:50,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:46:50,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:46:50,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:46:50,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:46:50,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:46:50,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:46:50,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:46:50,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:46:50,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:46:50,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:46:50,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:46:50,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:46:50,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:46:50,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:46:50,968 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:46:51,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:46:51,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:46:51,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:46:51,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:46:51,001 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:46:51,001 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:46:51,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:46:51,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:46:51,002 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:46:51,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:46:51,003 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:46:51,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:46:51,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:46:51,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:46:51,004 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:46:51,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:46:51,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:46:51,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:46:51,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:46:51,004 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:46:51,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:46:51,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:46:51,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:46:51,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:46:51,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:51,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:46:51,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:46:51,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:46:51,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:46:51,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:46:51,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:46:51,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:46:51,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:46:51,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:46:51,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5247496942546516118f3c28fa350944e097bdf15ee64734ca287a29ad51a034 [2021-12-15 10:46:51,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:46:51,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:46:51,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:46:51,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:46:51,222 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:46:51,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_update_all_reverse.i [2021-12-15 10:46:51,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38442bb61/ba23bddb39ed41daa962e593fe811468/FLAG741461cfd [2021-12-15 10:46:51,751 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:46:51,752 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_update_all_reverse.i [2021-12-15 10:46:51,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38442bb61/ba23bddb39ed41daa962e593fe811468/FLAG741461cfd [2021-12-15 10:46:52,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38442bb61/ba23bddb39ed41daa962e593fe811468 [2021-12-15 10:46:52,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:46:52,121 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:46:52,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:52,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:46:52,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:46:52,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a2517c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52, skipping insertion in model container [2021-12-15 10:46:52,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:46:52,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:46:52,354 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-simple/dll2c_update_all_reverse.i[24556,24569] [2021-12-15 10:46:52,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:52,361 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:46:52,417 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-simple/dll2c_update_all_reverse.i[24556,24569] [2021-12-15 10:46:52,419 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:52,441 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:46:52,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52 WrapperNode [2021-12-15 10:46:52,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:52,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:52,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:46:52,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:46:52,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,486 INFO L137 Inliner]: procedures = 126, calls = 29, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 131 [2021-12-15 10:46:52,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:52,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:46:52,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:46:52,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:46:52,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:46:52,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:46:52,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:46:52,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:46:52,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:52" (1/1) ... [2021-12-15 10:46:52,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:52,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:46:52,542 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 10:46:52,547 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 10:46:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 10:46:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 10:46:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-12-15 10:46:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-12-15 10:46:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:46:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:46:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 10:46:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 10:46:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:46:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:46:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:46:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:46:52,681 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:46:52,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:46:52,831 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:46:52,841 INFO L158 Benchmark]: Toolchain (without parser) took 718.68ms. Allocated memory is still 94.4MB. Free memory was 57.9MB in the beginning and 46.9MB in the end (delta: 11.0MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:52,841 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 75.7MB in the beginning and 75.6MB in the end (delta: 100.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:46:52,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.52ms. Allocated memory is still 94.4MB. Free memory was 57.7MB in the beginning and 63.6MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:46:52,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.17ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 61.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:52,843 INFO L158 Benchmark]: Boogie Preprocessor took 24.85ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 59.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:52,843 INFO L158 Benchmark]: RCFGBuilder took 326.72ms. Allocated memory is still 94.4MB. Free memory was 59.6MB in the beginning and 46.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 10:46:52,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 75.7MB in the beginning and 75.6MB in the end (delta: 100.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.52ms. Allocated memory is still 94.4MB. Free memory was 57.7MB in the beginning and 63.6MB in the end (delta: -5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.17ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 61.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.85ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 59.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 326.72ms. Allocated memory is still 94.4MB. Free memory was 59.6MB in the beginning and 46.9MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. 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 10:46:52,878 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-simple/dll2c_update_all_reverse.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 5247496942546516118f3c28fa350944e097bdf15ee64734ca287a29ad51a034 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:46:54,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:46:54,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:46:54,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:46:54,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:46:54,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:46:54,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:46:54,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:46:54,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:46:54,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:46:54,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:46:54,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:46:54,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:46:54,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:46:54,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:46:54,561 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:46:54,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:46:54,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:46:54,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:46:54,568 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:46:54,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:46:54,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:46:54,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:46:54,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:46:54,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:46:54,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:46:54,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:46:54,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:46:54,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:46:54,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:46:54,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:46:54,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:46:54,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:46:54,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:46:54,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:46:54,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:46:54,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:46:54,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:46:54,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:46:54,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:46:54,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:46:54,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:46:54,631 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:46:54,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:46:54,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:46:54,633 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:46:54,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:46:54,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:46:54,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:46:54,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:46:54,635 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:46:54,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:46:54,636 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:46:54,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:46:54,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:46:54,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:46:54,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:46:54,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:46:54,637 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:46:54,637 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:46:54,637 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:46:54,637 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:46:54,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:46:54,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:46:54,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:46:54,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:46:54,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:46:54,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:46:54,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:54,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:46:54,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:46:54,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:46:54,639 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:46:54,639 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:46:54,639 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:46:54,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:46:54,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:46:54,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:46:54,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:46:54,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5247496942546516118f3c28fa350944e097bdf15ee64734ca287a29ad51a034 [2021-12-15 10:46:54,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:46:54,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:46:54,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:46:54,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:46:54,927 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:46:54,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_update_all_reverse.i [2021-12-15 10:46:54,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e946f4391/b5c73341294f4e25900efb4c15f59481/FLAG10d84573d [2021-12-15 10:46:55,383 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:46:55,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_update_all_reverse.i [2021-12-15 10:46:55,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e946f4391/b5c73341294f4e25900efb4c15f59481/FLAG10d84573d [2021-12-15 10:46:55,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e946f4391/b5c73341294f4e25900efb4c15f59481 [2021-12-15 10:46:55,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:46:55,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:46:55,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:55,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:46:55,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:46:55,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:55" (1/1) ... [2021-12-15 10:46:55,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2e9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:55, skipping insertion in model container [2021-12-15 10:46:55,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:46:55" (1/1) ... [2021-12-15 10:46:55,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:46:55,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:46:56,059 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-simple/dll2c_update_all_reverse.i[24556,24569] [2021-12-15 10:46:56,061 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:56,072 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:46:56,113 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-simple/dll2c_update_all_reverse.i[24556,24569] [2021-12-15 10:46:56,114 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:46:56,135 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:46:56,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56 WrapperNode [2021-12-15 10:46:56,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:46:56,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:56,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:46:56,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:46:56,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,204 INFO L137 Inliner]: procedures = 129, calls = 29, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 131 [2021-12-15 10:46:56,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:46:56,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:46:56,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:46:56,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:46:56,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:46:56,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:46:56,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:46:56,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:46:56,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:46:56" (1/1) ... [2021-12-15 10:46:56,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:46:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:46:56,288 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 10:46:56,317 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 10:46:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 10:46:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-12-15 10:46:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-12-15 10:46:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 10:46:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:46:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 10:46:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 10:46:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 10:46:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 10:46:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:46:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:46:56,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:46:56,445 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:46:56,446 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:46:56,613 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 10:46:56,616 INFO L158 Benchmark]: Toolchain (without parser) took 839.87ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 31.9MB in the beginning and 35.3MB in the end (delta: -3.5MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-12-15 10:46:56,616 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 48.2MB. Free memory was 30.0MB in the beginning and 30.0MB in the end (delta: 32.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:46:56,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.29ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 31.6MB in the beginning and 37.9MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:46:56,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.35ms. Allocated memory is still 62.9MB. Free memory was 37.7MB in the beginning and 35.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:56,618 INFO L158 Benchmark]: Boogie Preprocessor took 54.63ms. Allocated memory is still 62.9MB. Free memory was 35.4MB in the beginning and 33.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:56,618 INFO L158 Benchmark]: RCFGBuilder took 353.05ms. Allocated memory is still 62.9MB. Free memory was 33.5MB in the beginning and 35.3MB in the end (delta: -1.8MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2021-12-15 10:46:56,621 INFO L339 ainManager$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 48.2MB. Free memory was 30.0MB in the beginning and 30.0MB in the end (delta: 32.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.29ms. Allocated memory was 48.2MB in the beginning and 62.9MB in the end (delta: 14.7MB). Free memory was 31.6MB in the beginning and 37.9MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.35ms. Allocated memory is still 62.9MB. Free memory was 37.7MB in the beginning and 35.4MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.63ms. Allocated memory is still 62.9MB. Free memory was 35.4MB in the beginning and 33.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 353.05ms. Allocated memory is still 62.9MB. Free memory was 33.5MB in the beginning and 35.3MB in the end (delta: -1.8MB). Peak memory consumption was 8.1MB. 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 10:46:56,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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