./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Division-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3dbbec33 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-crafted/Division-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 bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 14:40:32,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:40:32,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:40:32,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:40:32,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:40:32,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:40:32,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:40:32,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:40:32,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:40:32,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:40:32,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:40:32,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:40:32,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:40:32,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:40:32,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:40:32,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:40:32,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:40:32,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:40:32,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:40:32,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:40:32,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:40:32,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:40:32,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:40:32,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:40:32,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:40:32,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:40:32,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:40:32,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:40:32,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:40:32,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:40:32,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:40:32,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:40:32,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:40:32,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:40:32,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:40:32,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:40:32,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:40:32,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:40:32,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:40:32,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:40:32,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:40:32,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-14 14:40:32,689 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:40:32,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:40:32,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:40:32,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:40:32,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:40:32,691 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:40:32,691 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:40:32,692 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-14 14:40:32,692 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-14 14:40:32,692 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-14 14:40:32,693 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-14 14:40:32,693 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-14 14:40:32,693 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-14 14:40:32,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:40:32,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:40:32,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:40:32,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:40:32,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-14 14:40:32,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-14 14:40:32,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-14 14:40:32,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 14:40:32,695 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-14 14:40:32,695 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:40:32,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-14 14:40:32,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:40:32,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:40:32,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:40:32,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:40:32,698 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-14 14:40:32,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2023-02-14 14:40:32,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:40:32,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:40:32,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:40:32,983 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:40:32,984 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:40:32,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Division-2.c [2023-02-14 14:40:34,131 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:40:34,328 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:40:34,328 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Division-2.c [2023-02-14 14:40:34,333 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927f09223/a9e43028483a45009298fb83b79b44a4/FLAGc5fa1ea08 [2023-02-14 14:40:34,346 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/927f09223/a9e43028483a45009298fb83b79b44a4 [2023-02-14 14:40:34,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:40:34,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:40:34,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:40:34,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:40:34,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:40:34,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1997e9d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34, skipping insertion in model container [2023-02-14 14:40:34,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:40:34,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:40:34,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:40:34,480 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:40:34,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:40:34,499 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:40:34,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34 WrapperNode [2023-02-14 14:40:34,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:40:34,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:40:34,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:40:34,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:40:34,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,523 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2023-02-14 14:40:34,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:40:34,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:40:34,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:40:34,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:40:34,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,536 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:40:34,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:40:34,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:40:34,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:40:34,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (1/1) ... [2023-02-14 14:40:34,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:40:34,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:40:34,563 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) [2023-02-14 14:40:34,569 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 [2023-02-14 14:40:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:40:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:40:34,648 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:40:34,651 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:40:34,743 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:40:34,748 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:40:34,749 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 14:40:34,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:40:34 BoogieIcfgContainer [2023-02-14 14:40:34,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:40:34,751 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-14 14:40:34,752 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-14 14:40:34,755 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-14 14:40:34,756 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:40:34,756 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.02 02:40:34" (1/3) ... [2023-02-14 14:40:34,757 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d60fee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:40:34, skipping insertion in model container [2023-02-14 14:40:34,757 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:40:34,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:40:34" (2/3) ... [2023-02-14 14:40:34,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d60fee6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:40:34, skipping insertion in model container [2023-02-14 14:40:34,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:40:34,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:40:34" (3/3) ... [2023-02-14 14:40:34,759 INFO L332 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2023-02-14 14:40:34,804 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-14 14:40:34,804 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-14 14:40:34,805 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-14 14:40:34,805 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-14 14:40:34,805 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-14 14:40:34,805 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-14 14:40:34,805 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-14 14:40:34,805 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-14 14:40:34,809 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) [2023-02-14 14:40:34,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:40:34,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:40:34,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:40:34,826 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:40:34,826 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-14 14:40:34,826 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-14 14:40:34,827 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) [2023-02-14 14:40:34,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:40:34,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:40:34,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:40:34,828 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:40:34,828 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-14 14:40:34,834 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L14-2true [2023-02-14 14:40:34,835 INFO L750 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~y~0#1 >= 0 && main_~y~0#1 <= 10);main_~y~0#1 := (if 1 + 2 * main_~y~0#1 < 0 && 0 != (1 + 2 * main_~y~0#1) % 2 then 1 + (1 + 2 * main_~y~0#1) / 2 else (1 + 2 * main_~y~0#1) / 2); 6#L14-2true [2023-02-14 14:40:34,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:40:34,845 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-14 14:40:34,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:40:34,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719612384] [2023-02-14 14:40:34,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:40:34,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:40:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:34,918 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:40:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:34,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:40:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:40:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-02-14 14:40:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:40:34,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676329921] [2023-02-14 14:40:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:40:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:40:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:34,971 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:40:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:34,987 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:40:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:40:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-14 14:40:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:40:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586184220] [2023-02-14 14:40:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:40:34,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:40:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:35,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:40:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:35,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:40:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:35,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:40:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:40:35,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.02 02:40:35 BoogieIcfgContainer [2023-02-14 14:40:35,166 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-14 14:40:35,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 14:40:35,167 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 14:40:35,167 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 14:40:35,167 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:40:34" (3/4) ... [2023-02-14 14:40:35,170 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-14 14:40:35,207 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 14:40:35,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 14:40:35,222 INFO L158 Benchmark]: Toolchain (without parser) took 872.06ms. Allocated memory is still 153.1MB. Free memory was 123.1MB in the beginning and 84.2MB in the end (delta: 38.9MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-02-14 14:40:35,237 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:40:35,238 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.13ms. Allocated memory is still 153.1MB. Free memory was 123.1MB in the beginning and 114.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 14:40:35,238 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.25ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 112.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:40:35,239 INFO L158 Benchmark]: Boogie Preprocessor took 12.56ms. Allocated memory is still 153.1MB. Free memory was 112.8MB in the beginning and 111.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:40:35,239 INFO L158 Benchmark]: RCFGBuilder took 212.80ms. Allocated memory is still 153.1MB. Free memory was 111.4MB in the beginning and 103.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 14:40:35,240 INFO L158 Benchmark]: BuchiAutomizer took 414.42ms. Allocated memory is still 153.1MB. Free memory was 103.0MB in the beginning and 85.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-14 14:40:35,240 INFO L158 Benchmark]: Witness Printer took 54.18ms. Allocated memory is still 153.1MB. Free memory was 85.5MB in the beginning and 84.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:40:35,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.13ms. Allocated memory is still 153.1MB. Free memory was 123.1MB in the beginning and 114.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.25ms. Allocated memory is still 153.1MB. Free memory was 114.2MB in the beginning and 112.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.56ms. Allocated memory is still 153.1MB. Free memory was 112.8MB in the beginning and 111.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 212.80ms. Allocated memory is still 153.1MB. Free memory was 111.4MB in the beginning and 103.0MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 414.42ms. Allocated memory is still 153.1MB. Free memory was 103.0MB in the beginning and 85.5MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 54.18ms. Allocated memory is still 153.1MB. Free memory was 85.5MB in the beginning and 84.2MB 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-14 14:40:35,278 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)