./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 7e1ff0e6 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-?-7e1ff0e [2023-02-15 02:25:05,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 02:25:05,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 02:25:05,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 02:25:05,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 02:25:05,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 02:25:05,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 02:25:05,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 02:25:05,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 02:25:05,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 02:25:05,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 02:25:05,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 02:25:05,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 02:25:05,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 02:25:05,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 02:25:05,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 02:25:05,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 02:25:05,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 02:25:05,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 02:25:05,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 02:25:05,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 02:25:05,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 02:25:05,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 02:25:05,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 02:25:05,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 02:25:05,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 02:25:05,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 02:25:05,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 02:25:05,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 02:25:05,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 02:25:05,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 02:25:05,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 02:25:05,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 02:25:05,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 02:25:05,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 02:25:05,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 02:25:05,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 02:25:05,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 02:25:05,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 02:25:05,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 02:25:05,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 02:25:05,379 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 02:25:05,405 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 02:25:05,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 02:25:05,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 02:25:05,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 02:25:05,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 02:25:05,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 02:25:05,407 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 02:25:05,407 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 02:25:05,407 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 02:25:05,407 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 02:25:05,408 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 02:25:05,408 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 02:25:05,408 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 02:25:05,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 02:25:05,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 02:25:05,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 02:25:05,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 02:25:05,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 02:25:05,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 02:25:05,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 02:25:05,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 02:25:05,410 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 02:25:05,410 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 02:25:05,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 02:25:05,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 02:25:05,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 02:25:05,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 02:25:05,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 02:25:05,412 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 02:25:05,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42637c171db16e9b30ddb9b81ced3fc8afebc727d3cebc25aef685f9a2d7301b [2023-02-15 02:25:05,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 02:25:05,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 02:25:05,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 02:25:05,623 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 02:25:05,624 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 02:25:05,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Loop-2.c [2023-02-15 02:25:06,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 02:25:06,686 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 02:25:06,687 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Loop-2.c [2023-02-15 02:25:06,692 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5510562d7/6dfe0f7d8a9a46cbb2d64caeae98b2be/FLAGb0e6fd554 [2023-02-15 02:25:06,706 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5510562d7/6dfe0f7d8a9a46cbb2d64caeae98b2be [2023-02-15 02:25:06,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 02:25:06,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 02:25:06,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 02:25:06,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 02:25:06,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 02:25:06,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfdbd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06, skipping insertion in model container [2023-02-15 02:25:06,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 02:25:06,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 02:25:06,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:25:06,813 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 02:25:06,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:25:06,829 INFO L208 MainTranslator]: Completed translation [2023-02-15 02:25:06,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06 WrapperNode [2023-02-15 02:25:06,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 02:25:06,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 02:25:06,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 02:25:06,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 02:25:06,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,847 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2023-02-15 02:25:06,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 02:25:06,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 02:25:06,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 02:25:06,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 02:25:06,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,868 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 02:25:06,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 02:25:06,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 02:25:06,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 02:25:06,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (1/1) ... [2023-02-15 02:25:06,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:25:06,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:25:06,892 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) [2023-02-15 02:25:06,898 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 [2023-02-15 02:25:06,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 02:25:06,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 02:25:06,984 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 02:25:06,987 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 02:25:07,041 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 02:25:07,047 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 02:25:07,047 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 02:25:07,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:25:07 BoogieIcfgContainer [2023-02-15 02:25:07,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 02:25:07,049 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 02:25:07,050 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 02:25:07,052 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 02:25:07,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 02:25:07,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 02:25:06" (1/3) ... [2023-02-15 02:25:07,053 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1175f15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:25:07, skipping insertion in model container [2023-02-15 02:25:07,054 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 02:25:07,054 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:25:06" (2/3) ... [2023-02-15 02:25:07,054 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1175f15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:25:07, skipping insertion in model container [2023-02-15 02:25:07,054 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 02:25:07,054 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:25:07" (3/3) ... [2023-02-15 02:25:07,055 INFO L332 chiAutomizerObserver]: Analyzing ICFG Loop-2.c [2023-02-15 02:25:07,107 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 02:25:07,107 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 02:25:07,107 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 02:25:07,107 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 02:25:07,107 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 02:25:07,108 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 02:25:07,108 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 02:25:07,108 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 02:25:07,111 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) [2023-02-15 02:25:07,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-15 02:25:07,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 02:25:07,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 02:25:07,129 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 02:25:07,129 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 02:25:07,129 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 02:25:07,129 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) [2023-02-15 02:25:07,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-15 02:25:07,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 02:25:07,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 02:25:07,131 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 02:25:07,131 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 02:25:07,136 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~a~0#1, main_~b~0#1, main_~i~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~i~0#1;main_~a~0#1 := 5;main_~b~0#1 := 3;main_~i~0#1 := 0; 4#L13-2true [2023-02-15 02:25:07,137 INFO L750 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(main_~i~0#1 < 10);main_~i~0#1 := main_~i~0#1; 4#L13-2true [2023-02-15 02:25:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:25:07,145 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 02:25:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:25:07,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180929172] [2023-02-15 02:25:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:25:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:25:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 02:25:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 02:25:07,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:25:07,232 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-02-15 02:25:07,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:25:07,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556807900] [2023-02-15 02:25:07,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:25:07,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:25:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 02:25:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 02:25:07,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:25:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-15 02:25:07,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:25:07,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74093757] [2023-02-15 02:25:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:25:07,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:25:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 02:25:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 02:25:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 02:25:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:25:07,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 02:25:07 BoogieIcfgContainer [2023-02-15 02:25:07,378 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 02:25:07,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 02:25:07,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 02:25:07,379 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 02:25:07,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:25:07" (3/4) ... [2023-02-15 02:25:07,381 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-15 02:25:07,401 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 02:25:07,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 02:25:07,403 INFO L158 Benchmark]: Toolchain (without parser) took 692.83ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 77.2MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-02-15 02:25:07,403 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 127.9MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 02:25:07,403 INFO L158 Benchmark]: CACSL2BoogieTranslator took 118.23ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 106.4MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 02:25:07,404 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.38ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 02:25:07,404 INFO L158 Benchmark]: Boogie Preprocessor took 21.47ms. Allocated memory is still 159.4MB. Free memory was 105.1MB in the beginning and 103.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 02:25:07,405 INFO L158 Benchmark]: RCFGBuilder took 177.98ms. Allocated memory is still 159.4MB. Free memory was 103.7MB in the beginning and 96.0MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-15 02:25:07,405 INFO L158 Benchmark]: BuchiAutomizer took 328.70ms. Allocated memory is still 159.4MB. Free memory was 95.9MB in the beginning and 79.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-15 02:25:07,406 INFO L158 Benchmark]: Witness Printer took 22.90ms. Allocated memory is still 159.4MB. Free memory was 78.5MB in the beginning and 77.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 02:25:07,409 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 127.9MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 118.23ms. Allocated memory is still 159.4MB. Free memory was 114.9MB in the beginning and 106.4MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.38ms. Allocated memory is still 159.4MB. Free memory was 106.4MB in the beginning and 105.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.47ms. Allocated memory is still 159.4MB. Free memory was 105.1MB in the beginning and 103.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 177.98ms. Allocated memory is still 159.4MB. Free memory was 103.7MB in the beginning and 96.0MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 328.70ms. Allocated memory is still 159.4MB. Free memory was 95.9MB in the beginning and 79.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 22.90ms. Allocated memory is still 159.4MB. Free memory was 78.5MB in the beginning and 77.2MB in the end (delta: 1.3MB). There was no memory consumed. 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 InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int a; [L7] int b; [L8] int i; [L9] a = 5 [L10] b = 3 [L11] i = 0 VAL [a=5, b=3, i=0] Loop: [L13] COND TRUE i < 10 [L13] i = i + 0 End of lasso representation. - 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 VAL [a=5, b=3, i=0] Loop: [L13] COND TRUE i < 10 [L13] i = i + 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-15 02:25:07,447 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)