./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/id2_b3_o2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination 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/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/id2_b3_o2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:20:01,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:20:01,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:20:01,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:20:01,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:20:01,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:20:01,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:20:01,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:20:01,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:20:01,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:20:01,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:20:01,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:20:01,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:20:01,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:20:01,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:20:01,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:20:01,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:20:01,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:20:01,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:20:01,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:20:01,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:20:01,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:20:01,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:20:01,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:20:01,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:20:01,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:20:01,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:20:01,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:20:01,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:20:01,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:20:01,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:20:01,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:20:01,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:20:01,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:20:01,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:20:01,729 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:20:01,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:20:01,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:20:01,730 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:20:01,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:20:01,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:20:01,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:20:01,763 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:20:01,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:20:01,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:20:01,764 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:20:01,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:20:01,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:20:01,765 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:20:01,765 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:20:01,766 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:20:01,766 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:20:01,766 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:20:01,767 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:20:01,767 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:20:01,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:20:01,767 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:20:01,767 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:20:01,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:20:01,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:20:01,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:20:01,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:20:01,768 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:20:01,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:20:01,768 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:20:01,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:20:01,768 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:20:01,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:20:01,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:20:01,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:20:01,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:20:01,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:20:01,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:20:01,770 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:20:01,771 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:20:01,771 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f23c4102cc8cffc1c4a7a8ad49a8497c74f47f44c37be04f4ed5f1ca619fac2a [2021-12-15 17:20:01,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:20:01,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:20:01,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:20:01,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:20:01,971 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:20:01,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2021-12-15 17:20:02,024 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d862e7fc/163cecfba3bd4dcbaccedaf997aa5bbf/FLAGb02bcba4b [2021-12-15 17:20:02,400 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:20:02,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id2_b3_o2.c [2021-12-15 17:20:02,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d862e7fc/163cecfba3bd4dcbaccedaf997aa5bbf/FLAGb02bcba4b [2021-12-15 17:20:02,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d862e7fc/163cecfba3bd4dcbaccedaf997aa5bbf [2021-12-15 17:20:02,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:20:02,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:20:02,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:20:02,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:20:02,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:20:02,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e6e0f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02, skipping insertion in model container [2021-12-15 17:20:02,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:20:02,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:20:02,567 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/recursive-simple/id2_b3_o2.c[771,784] [2021-12-15 17:20:02,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:20:02,573 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:20:02,586 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/recursive-simple/id2_b3_o2.c[771,784] [2021-12-15 17:20:02,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:20:02,598 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:20:02,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02 WrapperNode [2021-12-15 17:20:02,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:20:02,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:20:02,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:20:02,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:20:02,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,620 INFO L137 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2021-12-15 17:20:02,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:20:02,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:20:02,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:20:02,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:20:02,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:20:02,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:20:02,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:20:02,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:20:02,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (1/1) ... [2021-12-15 17:20:02,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:20:02,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:20:02,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:20:02,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-15 17:20:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:20:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:20:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2021-12-15 17:20:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2021-12-15 17:20:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:20:02,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:20:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-12-15 17:20:02,709 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-12-15 17:20:02,754 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:20:02,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:20:02,830 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:20:02,834 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:20:02,835 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 17:20:02,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:02 BoogieIcfgContainer [2021-12-15 17:20:02,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:20:02,837 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:20:02,837 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:20:02,840 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:20:02,840 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:02,840 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:20:02" (1/3) ... [2021-12-15 17:20:02,841 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bb67bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:20:02, skipping insertion in model container [2021-12-15 17:20:02,841 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:02,841 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:02" (2/3) ... [2021-12-15 17:20:02,842 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1bb67bf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:20:02, skipping insertion in model container [2021-12-15 17:20:02,842 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:02,842 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:02" (3/3) ... [2021-12-15 17:20:02,843 INFO L388 chiAutomizerObserver]: Analyzing ICFG id2_b3_o2.c [2021-12-15 17:20:02,873 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:20:02,874 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:20:02,874 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:20:02,874 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:20:02,874 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:20:02,874 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:20:02,876 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:20:02,876 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:20:02,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 17:20:02,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-15 17:20:02,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:20:02,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:20:02,905 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 17:20:02,906 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-15 17:20:02,906 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:20:02,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 17:20:02,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-15 17:20:02,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:20:02,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:20:02,909 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 17:20:02,909 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-15 17:20:02,914 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~input~0#1, main_~result~0#1;main_~input~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 9#L25true call main_#t~ret7#1 := id(main_~input~0#1);< 14#idENTRYtrue [2021-12-15 17:20:02,914 INFO L793 eck$LassoCheckResult]: Loop: 14#idENTRYtrue ~x := #in~x; 10#L10true assume !(0 == ~x % 4294967296); 23#L11true call #t~ret4 := id2(~x - 1);< 5#id2ENTRYtrue ~x := #in~x; 8#L17true assume !(0 == ~x % 4294967296); 18#L18true call #t~ret5 := id(~x - 1);< 14#idENTRYtrue [2021-12-15 17:20:02,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:20:02,918 INFO L85 PathProgramCache]: Analyzing trace with hash 41798, now seen corresponding path program 1 times [2021-12-15 17:20:02,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:20:02,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696558919] [2021-12-15 17:20:02,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:20:02,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:20:02,963 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer 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.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkFeasibilityAndComputeInterpolants(LassoCheck.java:924) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkStemFeasibility(LassoCheck.java:879) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:794) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) 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 17:20:02,968 INFO L158 Benchmark]: Toolchain (without parser) took 549.99ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 56.1MB in the end (delta: -10.1MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-12-15 17:20:02,969 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:20:02,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.38ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 77.5MB in the end (delta: -31.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:20:02,970 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.11ms. Allocated memory is still 100.7MB. Free memory was 77.5MB in the beginning and 76.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:20:02,971 INFO L158 Benchmark]: Boogie Preprocessor took 11.34ms. Allocated memory is still 100.7MB. Free memory was 76.1MB in the beginning and 74.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:20:02,971 INFO L158 Benchmark]: RCFGBuilder took 202.81ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 65.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:20:02,972 INFO L158 Benchmark]: BuchiAutomizer took 129.50ms. Allocated memory is still 100.7MB. Free memory was 65.7MB in the beginning and 56.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:20:02,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.38ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 45.9MB in the beginning and 77.5MB in the end (delta: -31.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.11ms. Allocated memory is still 100.7MB. Free memory was 77.5MB in the beginning and 76.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.34ms. Allocated memory is still 100.7MB. Free memory was 76.1MB in the beginning and 74.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 202.81ms. Allocated memory is still 100.7MB. Free memory was 74.5MB in the beginning and 65.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 129.50ms. Allocated memory is still 100.7MB. Free memory was 65.7MB in the beginning and 56.1MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: 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 17:20:03,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable