./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/WhileSingle.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a31fd051 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/WhileSingle.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 96e06713cc7b7bcca20fa167ac54f1ece6c15e64971186f07487c25eaa3e3847 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 14:16:29,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 14:16:29,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 14:16:29,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 14:16:29,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 14:16:29,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 14:16:29,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 14:16:29,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 14:16:29,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 14:16:29,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 14:16:29,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 14:16:29,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 14:16:29,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 14:16:29,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 14:16:29,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 14:16:29,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 14:16:29,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 14:16:29,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 14:16:29,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 14:16:29,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 14:16:29,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 14:16:29,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 14:16:29,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 14:16:29,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 14:16:29,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 14:16:29,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 14:16:29,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 14:16:29,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 14:16:29,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 14:16:29,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 14:16:29,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 14:16:29,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 14:16:29,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 14:16:29,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 14:16:29,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 14:16:29,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 14:16:29,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 14:16:29,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 14:16:29,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 14:16:29,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 14:16:29,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 14:16:29,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 14:16:29,612 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 14:16:29,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 14:16:29,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 14:16:29,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 14:16:29,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 14:16:29,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 14:16:29,614 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 14:16:29,615 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 14:16:29,615 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 14:16:29,615 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 14:16:29,616 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 14:16:29,616 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 14:16:29,616 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 14:16:29,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 14:16:29,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 14:16:29,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 14:16:29,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 14:16:29,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 14:16:29,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 14:16:29,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 14:16:29,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 14:16:29,618 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 14:16:29,618 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 14:16:29,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 14:16:29,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 14:16:29,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 14:16:29,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 14:16:29,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 14:16:29,620 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 14:16:29,620 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96e06713cc7b7bcca20fa167ac54f1ece6c15e64971186f07487c25eaa3e3847 [2023-02-15 14:16:29,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 14:16:29,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 14:16:29,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 14:16:29,913 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 14:16:29,914 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 14:16:29,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/WhileSingle.c [2023-02-15 14:16:31,054 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 14:16:31,252 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 14:16:31,253 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/WhileSingle.c [2023-02-15 14:16:31,258 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7236e3163/ac606fc8c6ca4601bef70e4ce7ad6780/FLAG007698fc4 [2023-02-15 14:16:31,271 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7236e3163/ac606fc8c6ca4601bef70e4ce7ad6780 [2023-02-15 14:16:31,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 14:16:31,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 14:16:31,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 14:16:31,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 14:16:31,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 14:16:31,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19b2b157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31, skipping insertion in model container [2023-02-15 14:16:31,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 14:16:31,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 14:16:31,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:16:31,434 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 14:16:31,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:16:31,451 INFO L208 MainTranslator]: Completed translation [2023-02-15 14:16:31,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31 WrapperNode [2023-02-15 14:16:31,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 14:16:31,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 14:16:31,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 14:16:31,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 14:16:31,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,473 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2023-02-15 14:16:31,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 14:16:31,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 14:16:31,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 14:16:31,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 14:16:31,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 14:16:31,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 14:16:31,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 14:16:31,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 14:16:31,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (1/1) ... [2023-02-15 14:16:31,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:16:31,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:16:31,515 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 14:16:31,524 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 14:16:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 14:16:31,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 14:16:31,589 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 14:16:31,590 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 14:16:31,652 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 14:16:31,657 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 14:16:31,657 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 14:16:31,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:16:31 BoogieIcfgContainer [2023-02-15 14:16:31,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 14:16:31,659 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 14:16:31,659 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 14:16:31,662 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 14:16:31,663 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:16:31,663 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 02:16:31" (1/3) ... [2023-02-15 14:16:31,663 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f9fc4e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:16:31, skipping insertion in model container [2023-02-15 14:16:31,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:16:31,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:16:31" (2/3) ... [2023-02-15 14:16:31,664 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f9fc4e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:16:31, skipping insertion in model container [2023-02-15 14:16:31,664 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:16:31,664 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:16:31" (3/3) ... [2023-02-15 14:16:31,665 INFO L332 chiAutomizerObserver]: Analyzing ICFG WhileSingle.c [2023-02-15 14:16:31,710 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 14:16:31,710 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 14:16:31,710 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 14:16:31,710 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 14:16:31,710 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 14:16:31,710 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 14:16:31,711 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 14:16:31,711 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 14:16:31,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 14:16:31,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:16:31,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:16:31,728 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:16:31,732 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 14:16:31,732 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:16:31,732 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 14:16:31,733 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 14:16:31,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:16:31,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:16:31,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:16:31,734 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 14:16:31,734 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:16:31,740 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L10-2true [2023-02-15 14:16:31,741 INFO L750 eck$LassoCheckResult]: Loop: 3#L10-2true assume !!(main_~i~0#1 < 10); 5#L10true assume !(3 != main_~i~0#1); 3#L10-2true [2023-02-15 14:16:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:16:31,745 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 14:16:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:16:31,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799829550] [2023-02-15 14:16:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:16:31,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:16:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:16:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:16:31,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:16:31,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-02-15 14:16:31,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:16:31,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027293949] [2023-02-15 14:16:31,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:16:31,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:16:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:16:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:16:31,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:16:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-02-15 14:16:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:16:31,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609446901] [2023-02-15 14:16:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:16:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:16:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,860 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:16:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,864 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:16:31,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:16:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:16:31,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 02:16:31 BoogieIcfgContainer [2023-02-15 14:16:31,924 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 14:16:31,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 14:16:31,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 14:16:31,925 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 14:16:31,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:16:31" (3/4) ... [2023-02-15 14:16:31,928 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-15 14:16:31,953 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 14:16:31,953 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 14:16:31,955 INFO L158 Benchmark]: Toolchain (without parser) took 679.69ms. Allocated memory is still 123.7MB. Free memory was 94.2MB in the beginning and 57.7MB in the end (delta: 36.5MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-02-15 14:16:31,955 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:16:31,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.57ms. Allocated memory is still 123.7MB. Free memory was 93.9MB in the beginning and 85.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:16:31,956 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.34ms. Allocated memory is still 123.7MB. Free memory was 85.2MB in the beginning and 83.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:16:31,957 INFO L158 Benchmark]: Boogie Preprocessor took 13.73ms. Allocated memory is still 123.7MB. Free memory was 83.9MB in the beginning and 82.9MB in the end (delta: 963.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:16:31,957 INFO L158 Benchmark]: RCFGBuilder took 169.86ms. Allocated memory is still 123.7MB. Free memory was 82.9MB in the beginning and 74.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:16:31,958 INFO L158 Benchmark]: BuchiAutomizer took 265.19ms. Allocated memory is still 123.7MB. Free memory was 74.7MB in the beginning and 59.1MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-15 14:16:31,958 INFO L158 Benchmark]: Witness Printer took 28.33ms. Allocated memory is still 123.7MB. Free memory was 59.1MB in the beginning and 57.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:16:31,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory is still 96.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.57ms. Allocated memory is still 123.7MB. Free memory was 93.9MB in the beginning and 85.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.34ms. Allocated memory is still 123.7MB. Free memory was 85.2MB in the beginning and 83.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.73ms. Allocated memory is still 123.7MB. Free memory was 83.9MB in the beginning and 82.9MB in the end (delta: 963.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 169.86ms. Allocated memory is still 123.7MB. Free memory was 82.9MB in the beginning and 74.7MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 265.19ms. Allocated memory is still 123.7MB. Free memory was 74.7MB in the beginning and 59.1MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 28.33ms. Allocated memory is still 123.7MB. Free memory was 59.1MB in the beginning and 57.7MB 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 0.1s. 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: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i < 10 [L10] COND FALSE !(i != 3) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i < 10 [L10] COND FALSE !(i != 3) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-15 14:16:32,000 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)