./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Loop-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/termination-restricted-15/Loop-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 42637c171db16e9b30ddb9b81ced3fc8afebc727d3cebc25aef685f9a2d7301b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 21:57:42,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:57:42,729 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:57:42,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:57:42,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:57:42,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:57:42,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:57:42,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:57:42,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:57:42,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:57:42,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:57:42,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:57:42,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:57:42,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:57:42,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:57:42,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:57:42,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:57:42,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:57:42,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:57:42,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:57:42,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:57:42,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:57:42,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:57:42,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:57:42,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:57:42,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:57:42,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:57:42,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:57:42,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:57:42,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:57:42,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:57:42,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:57:42,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:57:42,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:57:42,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:57:42,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:57:42,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:57:42,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:57:42,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:57:42,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:57:42,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:57:42,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 21:57:42,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:57:42,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:57:42,850 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:57:42,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:57:42,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:57:42,851 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:57:42,851 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:57:42,851 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:57:42,851 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:57:42,851 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:57:42,852 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:57:42,852 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:57:42,852 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:57:42,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:57:42,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:57:42,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:57:42,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:57:42,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:57:42,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:57:42,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:57:42,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:57:42,854 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:57:42,854 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:57:42,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:57:42,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:57:42,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:57:42,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:57:42,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:57:42,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:57:42,856 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:57:42,857 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42637c171db16e9b30ddb9b81ced3fc8afebc727d3cebc25aef685f9a2d7301b [2021-12-21 21:57:43,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:57:43,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:57:43,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:57:43,094 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:57:43,095 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:57:43,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Loop-2.c [2021-12-21 21:57:43,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bee2bfea/3a354b507eba403da8c5a88d0318b7d2/FLAG39110ee3b [2021-12-21 21:57:43,488 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:57:43,489 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Loop-2.c [2021-12-21 21:57:43,496 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bee2bfea/3a354b507eba403da8c5a88d0318b7d2/FLAG39110ee3b [2021-12-21 21:57:43,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bee2bfea/3a354b507eba403da8c5a88d0318b7d2 [2021-12-21 21:57:43,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:57:43,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:57:43,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:57:43,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:57:43,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:57:43,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c4a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43, skipping insertion in model container [2021-12-21 21:57:43,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:57:43,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:57:43,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:57:43,680 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:57:43,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:57:43,701 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:57:43,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43 WrapperNode [2021-12-21 21:57:43,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:57:43,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:57:43,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:57:43,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:57:43,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,720 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2021-12-21 21:57:43,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:57:43,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:57:43,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:57:43,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:57:43,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:57:43,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:57:43,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:57:43,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:57:43,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (1/1) ... [2021-12-21 21:57:43,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:43,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:43,764 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) [2021-12-21 21:57:43,779 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 [2021-12-21 21:57:43,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:57:43,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:57:43,841 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:57:43,843 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:57:43,901 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:57:43,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:57:43,905 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 21:57:43,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:43 BoogieIcfgContainer [2021-12-21 21:57:43,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:57:43,908 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:57:43,908 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:57:43,910 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:57:43,910 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:57:43,911 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:57:43" (1/3) ... [2021-12-21 21:57:43,911 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64786fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:57:43, skipping insertion in model container [2021-12-21 21:57:43,912 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:57:43,912 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:43" (2/3) ... [2021-12-21 21:57:43,912 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@64786fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:57:43, skipping insertion in model container [2021-12-21 21:57:43,912 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:57:43,912 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:43" (3/3) ... [2021-12-21 21:57:43,913 INFO L388 chiAutomizerObserver]: Analyzing ICFG Loop-2.c [2021-12-21 21:57:43,949 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:57:43,949 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:57:43,950 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:57:43,950 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:57:43,950 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:57:43,950 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:57:43,950 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:57:43,950 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:57:43,961 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:57:43,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-21 21:57:43,972 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:57:43,972 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:57:43,975 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:57:43,976 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-21 21:57:43,976 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:57:43,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:57:43,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-21 21:57:43,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:57:43,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:57:43,977 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:57:43,977 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-21 21:57:43,981 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~a~0#1, main_~b~0#1, main_~i~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~i~0#1;main_~a~0#1 := 5;main_~b~0#1 := 3;main_~i~0#1 := 0; 5#L13-2true [2021-12-21 21:57:43,982 INFO L793 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(main_~i~0#1 < 10);main_~i~0#1 := main_~i~0#1; 5#L13-2true [2021-12-21 21:57:43,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:43,986 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 21:57:43,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:43,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937679119] [2021-12-21 21:57:43,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:43,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:44,040 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:44,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:44,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-12-21 21:57:44,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:44,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815884496] [2021-12-21 21:57:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:44,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:44,068 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:44,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:44,083 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-21 21:57:44,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:44,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933674520] [2021-12-21 21:57:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:44,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:44,092 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:44,099 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:44,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 09:57:44 BoogieIcfgContainer [2021-12-21 21:57:44,230 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 21:57:44,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 21:57:44,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 21:57:44,231 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 21:57:44,231 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:43" (3/4) ... [2021-12-21 21:57:44,232 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 21:57:44,249 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 21:57:44,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 21:57:44,250 INFO L158 Benchmark]: Toolchain (without parser) took 739.23ms. Allocated memory is still 107.0MB. Free memory was 75.4MB in the beginning and 58.0MB in the end (delta: 17.3MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2021-12-21 21:57:44,250 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 79.7MB. Free memory was 60.9MB in the beginning and 60.9MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:57:44,251 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.16ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 85.9MB in the end (delta: -11.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-21 21:57:44,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.64ms. Allocated memory is still 107.0MB. Free memory was 85.9MB in the beginning and 84.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:57:44,251 INFO L158 Benchmark]: Boogie Preprocessor took 10.40ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 83.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:57:44,252 INFO L158 Benchmark]: RCFGBuilder took 174.93ms. Allocated memory is still 107.0MB. Free memory was 83.6MB in the beginning and 76.1MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-21 21:57:44,252 INFO L158 Benchmark]: BuchiAutomizer took 322.24ms. Allocated memory is still 107.0MB. Free memory was 76.1MB in the beginning and 60.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 21:57:44,252 INFO L158 Benchmark]: Witness Printer took 18.73ms. Allocated memory is still 107.0MB. Free memory was 59.6MB in the beginning and 58.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:57:44,254 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 79.7MB. Free memory was 60.9MB in the beginning and 60.9MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.16ms. Allocated memory is still 107.0MB. Free memory was 74.9MB in the beginning and 85.9MB in the end (delta: -11.0MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.64ms. Allocated memory is still 107.0MB. Free memory was 85.9MB in the beginning and 84.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.40ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 83.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 174.93ms. Allocated memory is still 107.0MB. Free memory was 83.6MB in the beginning and 76.1MB in the end (delta: 7.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 322.24ms. Allocated memory is still 107.0MB. Free memory was 76.1MB in the beginning and 60.0MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 18.73ms. Allocated memory is still 107.0MB. Free memory was 59.6MB in the beginning and 58.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=0, a=5, \result=0, b=3} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int a; [L7] int b; [L8] int i; [L9] a = 5 [L10] b = 3 [L11] i = 0 Loop: [L13] COND TRUE i < 10 [L13] i = i + 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-21 21:57:44,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)