./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex06.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/Ex06.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 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 14:15:13,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 14:15:13,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 14:15:13,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 14:15:13,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 14:15:13,772 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 14:15:13,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 14:15:13,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 14:15:13,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 14:15:13,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 14:15:13,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 14:15:13,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 14:15:13,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 14:15:13,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 14:15:13,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 14:15:13,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 14:15:13,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 14:15:13,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 14:15:13,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 14:15:13,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 14:15:13,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 14:15:13,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 14:15:13,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 14:15:13,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 14:15:13,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 14:15:13,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 14:15:13,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 14:15:13,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 14:15:13,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 14:15:13,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 14:15:13,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 14:15:13,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 14:15:13,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 14:15:13,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 14:15:13,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 14:15:13,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 14:15:13,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 14:15:13,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 14:15:13,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 14:15:13,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 14:15:13,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 14:15:13,810 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 14:15:13,835 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 14:15:13,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 14:15:13,836 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 14:15:13,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 14:15:13,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 14:15:13,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 14:15:13,837 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 14:15:13,837 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 14:15:13,837 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 14:15:13,837 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 14:15:13,838 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 14:15:13,838 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 14:15:13,838 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 14:15:13,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 14:15:13,838 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 14:15:13,839 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 14:15:13,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 14:15:13,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 14:15:13,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 14:15:13,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 14:15:13,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 14:15:13,841 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 14:15:13,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 [2023-02-15 14:15:14,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 14:15:14,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 14:15:14,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 14:15:14,081 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 14:15:14,081 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 14:15:14,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex06.c [2023-02-15 14:15:14,969 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 14:15:15,099 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 14:15:15,100 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex06.c [2023-02-15 14:15:15,103 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f105c9e3/a1ae346886a24e11bdb888d404368284/FLAG1e3c5df02 [2023-02-15 14:15:15,121 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f105c9e3/a1ae346886a24e11bdb888d404368284 [2023-02-15 14:15:15,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 14:15:15,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 14:15:15,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 14:15:15,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 14:15:15,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 14:15:15,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126e9d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15, skipping insertion in model container [2023-02-15 14:15:15,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 14:15:15,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 14:15:15,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:15:15,229 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 14:15:15,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:15:15,244 INFO L208 MainTranslator]: Completed translation [2023-02-15 14:15:15,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15 WrapperNode [2023-02-15 14:15:15,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 14:15:15,245 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 14:15:15,245 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 14:15:15,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 14:15:15,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,262 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2023-02-15 14:15:15,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 14:15:15,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 14:15:15,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 14:15:15,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 14:15:15,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,274 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 14:15:15,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 14:15:15,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 14:15:15,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 14:15:15,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (1/1) ... [2023-02-15 14:15:15,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:15,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:15,301 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 14:15:15,304 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 14:15:15,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 14:15:15,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 14:15:15,378 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 14:15:15,379 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 14:15:15,449 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 14:15:15,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 14:15:15,454 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 14:15:15,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:15:15 BoogieIcfgContainer [2023-02-15 14:15:15,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 14:15:15,456 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 14:15:15,456 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 14:15:15,458 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 14:15:15,459 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:15:15,459 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 02:15:15" (1/3) ... [2023-02-15 14:15:15,460 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d41be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:15:15, skipping insertion in model container [2023-02-15 14:15:15,460 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:15:15,460 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:15:15" (2/3) ... [2023-02-15 14:15:15,460 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d41be2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:15:15, skipping insertion in model container [2023-02-15 14:15:15,460 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:15:15,460 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:15:15" (3/3) ... [2023-02-15 14:15:15,461 INFO L332 chiAutomizerObserver]: Analyzing ICFG Ex06.c [2023-02-15 14:15:15,495 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 14:15:15,496 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 14:15:15,496 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 14:15:15,496 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 14:15:15,496 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 14:15:15,496 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 14:15:15,496 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 14:15:15,496 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 14:15:15,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 14:15:15,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:15:15,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:15:15,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:15:15,514 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 14:15:15,514 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 14:15:15,514 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 14:15:15,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 14:15:15,515 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:15:15,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:15:15,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:15:15,515 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 14:15:15,516 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 14:15:15,521 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L13-1true [2023-02-15 14:15:15,521 INFO L750 eck$LassoCheckResult]: Loop: 3#L13-1true assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 6#L10true assume !(main_~i~0#1 > 0); 4#L10-2true assume main_~i~0#1 < 0;main_~i~0#1 := 1 + main_~i~0#1; 3#L13-1true [2023-02-15 14:15:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:15:15,525 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 14:15:15,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:15:15,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778116631] [2023-02-15 14:15:15,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:15:15,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:15:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:15,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:15:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:15,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:15:15,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:15:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2023-02-15 14:15:15,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:15:15,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669611846] [2023-02-15 14:15:15,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:15:15,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:15:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:15,620 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:15:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:15,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:15:15,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:15:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2023-02-15 14:15:15,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:15:15,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628565074] [2023-02-15 14:15:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:15:15,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:15:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:15,650 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:15:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:15,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:15:15,753 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:15:15,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:15:15,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:15:15,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:15:15,758 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:15:15,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:15,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:15:15,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:15:15,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration1_Loop [2023-02-15 14:15:15,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:15:15,758 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:15:15,769 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:15:15,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:15:15,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:15:15,833 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:15:15,833 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:15:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:15,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:15,837 INFO L229 MonitoredProcess]: Starting monitored process 2 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 14:15:15,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:15:15,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:15:15,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-15 14:15:15,871 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:15:15,871 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 14:15:15,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-15 14:15:15,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:15,880 INFO L229 MonitoredProcess]: Starting monitored process 3 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 14:15:15,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-15 14:15:15,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:15:15,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:15:15,897 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:15:15,897 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 14:15:15,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-02-15 14:15:15,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:15,902 INFO L229 MonitoredProcess]: Starting monitored process 4 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 14:15:15,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-15 14:15:15,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:15:15,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:15:15,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-15 14:15:15,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:15,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:15,927 INFO L229 MonitoredProcess]: Starting monitored process 5 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 14:15:15,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-15 14:15:15,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:15:15,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:15:15,949 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:15:15,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-15 14:15:15,952 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:15:15,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:15:15,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:15:15,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:15:15,952 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:15:15,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:15,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:15:15,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:15:15,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration1_Loop [2023-02-15 14:15:15,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:15:15,953 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:15:15,954 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:15:15,957 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:15:15,961 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:15:16,005 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:15:16,008 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:15:16,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:16,021 INFO L229 MonitoredProcess]: Starting monitored process 6 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 14:15:16,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-15 14:15:16,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:15:16,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:15:16,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:15:16,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:15:16,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:15:16,035 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:15:16,035 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:15:16,053 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:15:16,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-02-15 14:15:16,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:16,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:16,064 INFO L229 MonitoredProcess]: Starting monitored process 7 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 14:15:16,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-15 14:15:16,069 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:15:16,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:15:16,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:15:16,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:15:16,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:15:16,083 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:15:16,084 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:15:16,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:15:16,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-15 14:15:16,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:16,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:16,112 INFO L229 MonitoredProcess]: Starting monitored process 8 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 14:15:16,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-15 14:15:16,125 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 14:15:16,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:15:16,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:15:16,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:15:16,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:15:16,132 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:15:16,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:15:16,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:15:16,149 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:15:16,152 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-15 14:15:16,152 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 14:15:16,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:15:16,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:15:16,155 INFO L229 MonitoredProcess]: Starting monitored process 9 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 14:15:16,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-15 14:15:16,157 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:15:16,157 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:15:16,158 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:15:16,158 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-02-15 14:15:16,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-15 14:15:16,171 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:15:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:15:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:15:16,195 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:15:16,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:15:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:15:16,204 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:15:16,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:15:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:15:16,245 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 14:15:16,246 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 14:15:16,277 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Result 31 states and 45 transitions. Complement of second has 6 states. [2023-02-15 14:15:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 14:15:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 14:15:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-02-15 14:15:16,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 3 letters. [2023-02-15 14:15:16,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:15:16,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-15 14:15:16,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:15:16,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 6 letters. [2023-02-15 14:15:16,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:15:16,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 45 transitions. [2023-02-15 14:15:16,286 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-02-15 14:15:16,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 21 transitions. [2023-02-15 14:15:16,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-15 14:15:16,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-15 14:15:16,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2023-02-15 14:15:16,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:15:16,290 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-02-15 14:15:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2023-02-15 14:15:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-15 14:15:16,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 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 14:15:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2023-02-15 14:15:16,306 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-15 14:15:16,306 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-15 14:15:16,306 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 14:15:16,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2023-02-15 14:15:16,306 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-02-15 14:15:16,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:15:16,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:15:16,307 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 14:15:16,307 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 14:15:16,307 INFO L748 eck$LassoCheckResult]: Stem: 87#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 88#L-1 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; 89#L13-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 79#L10 [2023-02-15 14:15:16,307 INFO L750 eck$LassoCheckResult]: Loop: 79#L10 assume !(main_~i~0#1 > 0); 82#L10-2 assume !(main_~i~0#1 < 0); 78#L13-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 79#L10 [2023-02-15 14:15:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:15:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-15 14:15:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:15:16,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297862481] [2023-02-15 14:15:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:15:16,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:15:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:15:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:15:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:15:16,313 INFO L85 PathProgramCache]: Analyzing trace with hash 45860, now seen corresponding path program 1 times [2023-02-15 14:15:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:15:16,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530084444] [2023-02-15 14:15:16,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:15:16,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:15:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:15:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:15:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:15:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 889694493, now seen corresponding path program 1 times [2023-02-15 14:15:16,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:15:16,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387483976] [2023-02-15 14:15:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:15:16,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:15:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:15:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,326 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:15:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:15:16,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:15:16,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 02:15:16 BoogieIcfgContainer [2023-02-15 14:15:16,367 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 14:15:16,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 14:15:16,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 14:15:16,367 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 14:15:16,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:15:15" (3/4) ... [2023-02-15 14:15:16,369 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-15 14:15:16,388 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 14:15:16,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 14:15:16,388 INFO L158 Benchmark]: Toolchain (without parser) took 1264.40ms. Allocated memory is still 167.8MB. Free memory was 124.8MB in the beginning and 103.6MB in the end (delta: 21.2MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2023-02-15 14:15:16,389 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:15:16,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 119.03ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 115.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:15:16,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.55ms. Allocated memory is still 167.8MB. Free memory was 115.5MB in the beginning and 114.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:15:16,390 INFO L158 Benchmark]: Boogie Preprocessor took 11.82ms. Allocated memory is still 167.8MB. Free memory was 114.3MB in the beginning and 113.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:15:16,390 INFO L158 Benchmark]: RCFGBuilder took 179.55ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 104.8MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:15:16,390 INFO L158 Benchmark]: BuchiAutomizer took 911.03ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 104.8MB in the end (delta: -343.4kB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-02-15 14:15:16,391 INFO L158 Benchmark]: Witness Printer took 20.84ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 103.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:15:16,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory was 56.4MB in the beginning and 56.3MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 119.03ms. Allocated memory is still 167.8MB. Free memory was 124.4MB in the beginning and 115.5MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.55ms. Allocated memory is still 167.8MB. Free memory was 115.5MB in the beginning and 114.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.82ms. Allocated memory is still 167.8MB. Free memory was 114.3MB in the beginning and 113.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 179.55ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 104.8MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 911.03ms. Allocated memory is still 167.8MB. Free memory was 104.5MB in the beginning and 104.8MB in the end (delta: -343.4kB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 20.84ms. Allocated memory is still 167.8MB. Free memory was 104.8MB in the beginning and 103.6MB 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 Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 4 locations. The remainder module has 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.8s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq139 hnf100 smp100 dnf95 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: 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() [L9] COND TRUE i >= -5 && i <= 5 VAL [i=0] Loop: [L10] COND FALSE !(i > 0) [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i >= -5 && i <= 5 VAL [i=0] Loop: [L10] COND FALSE !(i > 0) [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-15 14:15:16,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-15 14:15:16,607 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)