./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/string_concat-noarr.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/loop-invgen/string_concat-noarr.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 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:52:34,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:52:34,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:52:34,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:52:34,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:52:34,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:52:34,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:52:34,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:52:34,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:52:34,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:52:34,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:52:34,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:52:34,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:52:34,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:52:34,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:52:34,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:52:34,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:52:34,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:52:34,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:52:34,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:52:34,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:52:34,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:52:34,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:52:34,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:52:34,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:52:34,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:52:34,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:52:34,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:52:34,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:52:34,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:52:34,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:52:34,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:52:34,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:52:34,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:52:34,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:52:34,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:52:34,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:52:34,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:52:34,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:52:34,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:52:34,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:52:34,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:52:34,964 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:52:34,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:52:34,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:52:34,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:52:34,965 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:52:34,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:52:34,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:52:34,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:52:34,966 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:52:34,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:52:34,967 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:52:34,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:52:34,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:52:34,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:52:34,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:52:34,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:52:34,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:52:34,968 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:52:34,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:52:34,969 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:52:34,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:52:34,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:52:34,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:52:34,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:52:34,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:52:34,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:52:34,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:52:34,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:52:34,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:52:34,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:52:34,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:52:34,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:52:34,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:52:34,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:52:34,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 [2021-12-15 10:52:35,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:52:35,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:52:35,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:52:35,166 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:52:35,166 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:52:35,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2021-12-15 10:52:35,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504c73f01/dfffa430e6f4402f8554c8b436b70ffc/FLAGc95a7cca0 [2021-12-15 10:52:35,576 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:52:35,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2021-12-15 10:52:35,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504c73f01/dfffa430e6f4402f8554c8b436b70ffc/FLAGc95a7cca0 [2021-12-15 10:52:35,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/504c73f01/dfffa430e6f4402f8554c8b436b70ffc [2021-12-15 10:52:35,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:52:35,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:52:35,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:52:35,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:52:35,601 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:52:35,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f5f147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35, skipping insertion in model container [2021-12-15 10:52:35,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:52:35,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:52:35,722 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/loop-invgen/string_concat-noarr.i[893,906] [2021-12-15 10:52:35,729 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:52:35,734 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:52:35,744 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/loop-invgen/string_concat-noarr.i[893,906] [2021-12-15 10:52:35,749 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:52:35,759 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:52:35,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35 WrapperNode [2021-12-15 10:52:35,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:52:35,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:52:35,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:52:35,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:52:35,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,783 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2021-12-15 10:52:35,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:52:35,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:52:35,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:52:35,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:52:35,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:52:35,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:52:35,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:52:35,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:52:35,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:35" (1/1) ... [2021-12-15 10:52:35,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:52:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:52:35,830 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 10:52:35,832 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 10:52:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:52:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:52:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:52:35,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:52:35,889 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:52:35,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:52:35,900 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 10:52:35,903 INFO L158 Benchmark]: Toolchain (without parser) took 308.78ms. Allocated memory is still 94.4MB. Free memory was 63.4MB in the beginning and 61.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:52:35,904 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:52:35,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.60ms. Allocated memory is still 94.4MB. Free memory was 63.2MB in the beginning and 70.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:52:35,905 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.59ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:52:35,905 INFO L158 Benchmark]: Boogie Preprocessor took 10.65ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 67.6MB in the end (delta: 848.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:52:35,905 INFO L158 Benchmark]: RCFGBuilder took 106.63ms. Allocated memory is still 94.4MB. Free memory was 67.6MB in the beginning and 61.6MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 10:52:35,907 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 94.4MB. Free memory was 51.5MB in the beginning and 51.4MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.60ms. Allocated memory is still 94.4MB. Free memory was 63.2MB in the beginning and 70.2MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.59ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.65ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 67.6MB in the end (delta: 848.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 106.63ms. Allocated memory is still 94.4MB. Free memory was 67.6MB in the beginning and 61.6MB in the end (delta: 6.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:52:35,948 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/loop-invgen/string_concat-noarr.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 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:52:37,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:52:37,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:52:37,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:52:37,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:52:37,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:52:37,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:52:37,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:52:37,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:52:37,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:52:37,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:52:37,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:52:37,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:52:37,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:52:37,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:52:37,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:52:37,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:52:37,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:52:37,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:52:37,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:52:37,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:52:37,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:52:37,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:52:37,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:52:37,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:52:37,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:52:37,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:52:37,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:52:37,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:52:37,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:52:37,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:52:37,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:52:37,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:52:37,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:52:37,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:52:37,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:52:37,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:52:37,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:52:37,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:52:37,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:52:37,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:52:37,650 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:52:37,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:52:37,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:52:37,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:52:37,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:52:37,676 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:52:37,676 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:52:37,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:52:37,677 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:52:37,677 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:52:37,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:52:37,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:52:37,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:52:37,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:52:37,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:52:37,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:52:37,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:52:37,679 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:52:37,679 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:52:37,679 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:52:37,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:52:37,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:52:37,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:52:37,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:52:37,680 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:52:37,680 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:52:37,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:52:37,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:52:37,681 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:52:37,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:52:37,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:52:37,681 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:52:37,681 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:52:37,681 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:52:37,682 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:52:37,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:52:37,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:52:37,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:52:37,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30a4b942034eaa47a8fcc8fdf4549d1d63a9a60d59b585da2a353c9626604750 [2021-12-15 10:52:37,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:52:37,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:52:37,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:52:37,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:52:37,927 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:52:37,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2021-12-15 10:52:37,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652353b44/872ac00e7c7b43c4ac95f15eeadea274/FLAG0e52e90d2 [2021-12-15 10:52:38,367 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:52:38,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/string_concat-noarr.i [2021-12-15 10:52:38,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652353b44/872ac00e7c7b43c4ac95f15eeadea274/FLAG0e52e90d2 [2021-12-15 10:52:38,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/652353b44/872ac00e7c7b43c4ac95f15eeadea274 [2021-12-15 10:52:38,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:52:38,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:52:38,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:52:38,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:52:38,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:52:38,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d41d7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38, skipping insertion in model container [2021-12-15 10:52:38,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:52:38,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:52:38,511 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/loop-invgen/string_concat-noarr.i[893,906] [2021-12-15 10:52:38,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:52:38,533 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:52:38,574 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/loop-invgen/string_concat-noarr.i[893,906] [2021-12-15 10:52:38,578 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:52:38,589 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:52:38,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38 WrapperNode [2021-12-15 10:52:38,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:52:38,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:52:38,591 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:52:38,591 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:52:38,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,613 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2021-12-15 10:52:38,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:52:38,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:52:38,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:52:38,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:52:38,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,643 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:52:38,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:52:38,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:52:38,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:52:38,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:52:38" (1/1) ... [2021-12-15 10:52:38,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:52:38,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:52:38,669 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 10:52:38,687 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 10:52:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:52:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:52:38,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:52:38,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:52:38,745 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:52:38,746 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:52:38,759 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 10:52:38,764 INFO L158 Benchmark]: Toolchain (without parser) took 372.94ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 37.0MB in the end (delta: 6.5MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-12-15 10:52:38,765 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory was 43.8MB in the beginning and 43.8MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:52:38,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.82ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 45.6MB in the end (delta: -2.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-15 10:52:38,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.20ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:52:38,768 INFO L158 Benchmark]: Boogie Preprocessor took 33.73ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 43.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:52:38,768 INFO L158 Benchmark]: RCFGBuilder took 114.04ms. Allocated memory is still 62.9MB. Free memory was 42.9MB in the beginning and 37.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 10:52:38,771 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 62.9MB. Free memory was 43.8MB in the beginning and 43.8MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.82ms. Allocated memory is still 62.9MB. Free memory was 43.3MB in the beginning and 45.6MB in the end (delta: -2.3MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.20ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.73ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 43.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 114.04ms. Allocated memory is still 62.9MB. Free memory was 42.9MB in the beginning and 37.0MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 10:52:38,803 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