./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:06:26,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:06:26,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:06:26,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:06:26,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:06:26,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:06:26,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:06:26,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:06:26,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:06:26,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:06:26,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:06:26,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:06:26,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:06:26,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:06:26,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:06:26,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:06:26,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:06:26,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:06:26,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:06:26,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:06:26,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:06:26,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:06:26,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:06:26,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:06:26,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:06:26,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:06:26,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:06:26,684 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:06:26,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:06:26,685 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:06:26,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:06:26,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:06:26,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:06:26,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:06:26,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:06:26,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:06:26,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:06:26,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:06:26,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:06:26,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:06:26,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:06:26,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-15 14:06:26,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:06:26,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:06:26,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:06:26,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:06:26,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:06:26,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:06:26,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:06:26,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:06:26,708 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:06:26,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:06:26,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:06:26,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:06:26,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:06:26,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:06:26,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:06:26,710 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:06:26,710 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:06:26,710 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:06:26,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:06:26,711 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:06:26,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:06:26,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:06:26,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:06:26,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:06:26,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:06:26,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:06:26,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:06:26,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:06:26,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 14:06:26,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 14:06:26,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:06:26,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 [2021-12-15 14:06:26,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:06:26,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:06:26,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:06:26,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:06:26,955 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:06:26,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-12-15 14:06:27,011 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbfc4552/d97eb400d5374c52bf11758d8d5da9d2/FLAGbff51a163 [2021-12-15 14:06:27,361 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:06:27,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-12-15 14:06:27,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbfc4552/d97eb400d5374c52bf11758d8d5da9d2/FLAGbff51a163 [2021-12-15 14:06:27,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbfc4552/d97eb400d5374c52bf11758d8d5da9d2 [2021-12-15 14:06:27,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:06:27,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:06:27,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:06:27,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:06:27,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:06:27,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:06:27" (1/1) ... [2021-12-15 14:06:27,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231a6403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:27, skipping insertion in model container [2021-12-15 14:06:27,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:06:27" (1/1) ... [2021-12-15 14:06:27,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:06:27,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:06:28,077 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_prepend_equal.i[24640,24653] [2021-12-15 14:06:28,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:06:28,084 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:06:28,123 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_prepend_equal.i[24640,24653] [2021-12-15 14:06:28,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:06:28,145 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:06:28,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28 WrapperNode [2021-12-15 14:06:28,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:06:28,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:06:28,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:06:28,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:06:28,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,180 INFO L137 Inliner]: procedures = 127, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 140 [2021-12-15 14:06:28,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:06:28,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:06:28,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:06:28,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:06:28,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,199 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:06:28,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:06:28,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:06:28,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:06:28,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:28" (1/1) ... [2021-12-15 14:06:28,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:06:28,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:06:28,261 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 14:06:28,276 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 14:06:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 14:06:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 14:06:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-12-15 14:06:28,297 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-12-15 14:06:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:06:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:06:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 14:06:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:06:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:06:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:06:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 14:06:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 14:06:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:06:28,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:06:28,384 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:06:28,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:06:28,679 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:06:28,685 INFO L158 Benchmark]: Toolchain (without parser) took 935.93ms. Allocated memory is still 98.6MB. Free memory was 67.4MB in the beginning and 46.1MB in the end (delta: 21.3MB). Peak memory consumption was 18.6MB. Max. memory is 16.1GB. [2021-12-15 14:06:28,685 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 77.6MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:06:28,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.43ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 68.9MB in the end (delta: -1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 14:06:28,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.05ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 66.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 14:06:28,687 INFO L158 Benchmark]: Boogie Preprocessor took 20.00ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 64.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:06:28,687 INFO L158 Benchmark]: RCFGBuilder took 482.28ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 46.1MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-15 14:06:28,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 77.6MB. Free memory was 35.8MB in the beginning and 35.8MB in the end (delta: 36.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 396.43ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 68.9MB in the end (delta: -1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.05ms. Allocated memory is still 98.6MB. Free memory was 68.9MB in the beginning and 66.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.00ms. Allocated memory is still 98.6MB. Free memory was 66.2MB in the beginning and 64.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 482.28ms. Allocated memory is still 98.6MB. Free memory was 64.7MB in the beginning and 46.1MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. 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 14:06:28,733 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 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 14:06:30,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 14:06:30,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 14:06:30,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 14:06:30,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 14:06:30,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 14:06:30,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 14:06:30,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 14:06:30,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 14:06:30,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 14:06:30,310 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 14:06:30,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 14:06:30,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 14:06:30,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 14:06:30,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 14:06:30,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 14:06:30,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 14:06:30,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 14:06:30,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 14:06:30,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 14:06:30,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 14:06:30,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 14:06:30,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 14:06:30,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 14:06:30,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 14:06:30,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 14:06:30,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 14:06:30,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 14:06:30,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 14:06:30,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 14:06:30,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 14:06:30,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 14:06:30,335 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 14:06:30,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 14:06:30,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 14:06:30,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 14:06:30,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 14:06:30,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 14:06:30,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 14:06:30,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 14:06:30,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 14:06:30,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-15 14:06:30,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 14:06:30,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 14:06:30,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 14:06:30,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 14:06:30,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 14:06:30,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 14:06:30,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 14:06:30,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 14:06:30,364 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 14:06:30,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 14:06:30,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 14:06:30,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 14:06:30,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 14:06:30,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 14:06:30,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 14:06:30,365 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-15 14:06:30,365 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-15 14:06:30,366 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-15 14:06:30,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 14:06:30,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 14:06:30,372 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 14:06:30,372 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 14:06:30,372 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 14:06:30,372 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 14:06:30,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 14:06:30,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 14:06:30,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 14:06:30,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:06:30,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 14:06:30,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 14:06:30,373 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 14:06:30,373 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 14:06:30,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 14:06:30,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 14:06:30,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0e4fff172a515598d076941b225a1a1f31b97f5ac14127a866784b10a4e3537 [2021-12-15 14:06:30,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 14:06:30,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 14:06:30,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 14:06:30,751 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 14:06:30,751 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 14:06:30,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-12-15 14:06:30,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a908b515a/059e3ecc52dc4eb2ba0f515e5af9a94e/FLAG6106b6660 [2021-12-15 14:06:31,223 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 14:06:31,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2c_prepend_equal.i [2021-12-15 14:06:31,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a908b515a/059e3ecc52dc4eb2ba0f515e5af9a94e/FLAG6106b6660 [2021-12-15 14:06:31,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a908b515a/059e3ecc52dc4eb2ba0f515e5af9a94e [2021-12-15 14:06:31,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 14:06:31,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 14:06:31,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 14:06:31,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 14:06:31,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 14:06:31,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193e18c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31, skipping insertion in model container [2021-12-15 14:06:31,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 14:06:31,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 14:06:31,495 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_prepend_equal.i[24640,24653] [2021-12-15 14:06:31,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:06:31,504 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 14:06:31,532 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_prepend_equal.i[24640,24653] [2021-12-15 14:06:31,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 14:06:31,552 INFO L208 MainTranslator]: Completed translation [2021-12-15 14:06:31,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31 WrapperNode [2021-12-15 14:06:31,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 14:06:31,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 14:06:31,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 14:06:31,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 14:06:31,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,587 INFO L137 Inliner]: procedures = 130, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 141 [2021-12-15 14:06:31,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 14:06:31,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 14:06:31,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 14:06:31,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 14:06:31,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 14:06:31,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 14:06:31,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 14:06:31,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 14:06:31,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 02:06:31" (1/1) ... [2021-12-15 14:06:31,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 14:06:31,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 14:06:31,642 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 14:06:31,652 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 14:06:31,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 14:06:31,676 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2021-12-15 14:06:31,676 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2021-12-15 14:06:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 14:06:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 14:06:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 14:06:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 14:06:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 14:06:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 14:06:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 14:06:31,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-15 14:06:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 14:06:31,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 14:06:31,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 14:06:31,802 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 14:06:31,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 14:06:32,187 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 14:06:32,190 INFO L158 Benchmark]: Toolchain (without parser) took 940.79ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 41.4MB in the end (delta: 10.9MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2021-12-15 14:06:32,191 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 71.3MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 14:06:32,191 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.01ms. Allocated memory is still 71.3MB. Free memory was 52.1MB in the beginning and 44.8MB in the end (delta: 7.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2021-12-15 14:06:32,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.31ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 42.4MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 14:06:32,192 INFO L158 Benchmark]: Boogie Preprocessor took 21.99ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 40.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 14:06:32,192 INFO L158 Benchmark]: RCFGBuilder took 578.60ms. Allocated memory is still 71.3MB. Free memory was 40.3MB in the beginning and 41.4MB in the end (delta: -1.1MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-12-15 14:06:32,194 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 71.3MB. Free memory is still 53.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.01ms. Allocated memory is still 71.3MB. Free memory was 52.1MB in the beginning and 44.8MB in the end (delta: 7.3MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.31ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 42.4MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.99ms. Allocated memory is still 71.3MB. Free memory was 42.4MB in the beginning and 40.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 578.60ms. Allocated memory is still 71.3MB. Free memory was 40.3MB in the beginning and 41.4MB in the end (delta: -1.1MB). Peak memory consumption was 13.5MB. 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 14:06:32,228 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