./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5317dae 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-numeric/twisted.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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 04:32:28,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 04:32:28,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 04:32:28,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 04:32:28,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 04:32:28,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 04:32:28,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 04:32:28,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 04:32:28,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 04:32:28,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 04:32:28,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 04:32:28,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 04:32:28,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 04:32:28,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 04:32:28,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 04:32:28,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 04:32:28,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 04:32:28,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 04:32:28,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 04:32:28,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 04:32:28,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 04:32:28,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 04:32:28,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 04:32:28,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 04:32:28,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 04:32:28,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 04:32:28,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 04:32:28,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 04:32:28,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 04:32:28,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 04:32:28,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 04:32:28,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 04:32:28,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 04:32:28,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 04:32:28,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 04:32:28,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 04:32:28,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 04:32:28,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 04:32:28,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 04:32:28,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 04:32:28,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 04:32:28,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-16 04:32:28,511 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 04:32:28,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 04:32:28,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 04:32:28,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 04:32:28,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 04:32:28,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 04:32:28,513 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 04:32:28,513 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-16 04:32:28,513 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-16 04:32:28,513 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-16 04:32:28,514 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-16 04:32:28,514 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-16 04:32:28,514 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-16 04:32:28,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 04:32:28,514 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 04:32:28,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 04:32:28,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 04:32:28,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-16 04:32:28,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-16 04:32:28,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-16 04:32:28,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 04:32:28,515 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-16 04:32:28,515 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 04:32:28,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-16 04:32:28,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 04:32:28,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 04:32:28,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 04:32:28,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 04:32:28,517 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-16 04:32:28,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2023-02-16 04:32:28,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 04:32:28,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 04:32:28,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 04:32:28,723 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 04:32:28,724 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 04:32:28,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/twisted.c [2023-02-16 04:32:29,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 04:32:29,794 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 04:32:29,794 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/twisted.c [2023-02-16 04:32:29,798 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2eb1363d/ff55eb90c38546fdb1f6fe856eccb8d4/FLAG7649d899e [2023-02-16 04:32:29,810 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2eb1363d/ff55eb90c38546fdb1f6fe856eccb8d4 [2023-02-16 04:32:29,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 04:32:29,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 04:32:29,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 04:32:29,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 04:32:29,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 04:32:29,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7aa2aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29, skipping insertion in model container [2023-02-16 04:32:29,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 04:32:29,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 04:32:29,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:32:29,909 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 04:32:29,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 04:32:29,923 INFO L208 MainTranslator]: Completed translation [2023-02-16 04:32:29,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29 WrapperNode [2023-02-16 04:32:29,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 04:32:29,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 04:32:29,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 04:32:29,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 04:32:29,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,940 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-02-16 04:32:29,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 04:32:29,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 04:32:29,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 04:32:29,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 04:32:29,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 04:32:29,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 04:32:29,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 04:32:29,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 04:32:29,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (1/1) ... [2023-02-16 04:32:29,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:29,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:29,971 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) [2023-02-16 04:32:29,981 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 [2023-02-16 04:32:30,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 04:32:30,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 04:32:30,038 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 04:32:30,040 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 04:32:30,144 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 04:32:30,148 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 04:32:30,148 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 04:32:30,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:32:30 BoogieIcfgContainer [2023-02-16 04:32:30,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 04:32:30,151 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-16 04:32:30,151 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-16 04:32:30,153 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-16 04:32:30,154 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-16 04:32:30,154 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.02 04:32:29" (1/3) ... [2023-02-16 04:32:30,155 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bdf7684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.02 04:32:30, skipping insertion in model container [2023-02-16 04:32:30,155 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-16 04:32:30,155 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 04:32:29" (2/3) ... [2023-02-16 04:32:30,155 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bdf7684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.02 04:32:30, skipping insertion in model container [2023-02-16 04:32:30,155 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-16 04:32:30,155 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:32:30" (3/3) ... [2023-02-16 04:32:30,156 INFO L332 chiAutomizerObserver]: Analyzing ICFG twisted.c [2023-02-16 04:32:30,223 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-16 04:32:30,223 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-16 04:32:30,223 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-16 04:32:30,223 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-16 04:32:30,223 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-16 04:32:30,223 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-16 04:32:30,224 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-16 04:32:30,224 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-16 04:32:30,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2023-02-16 04:32:30,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-16 04:32:30,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:32:30,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:32:30,245 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-16 04:32:30,245 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-16 04:32:30,245 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-16 04:32:30,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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) [2023-02-16 04:32:30,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-16 04:32:30,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:32:30,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:32:30,253 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-16 04:32:30,253 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-16 04:32:30,259 INFO L748 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 8#$Ultimate##3true [2023-02-16 04:32:30,260 INFO L750 eck$LassoCheckResult]: Loop: 8#$Ultimate##3true assume !true; 13#$Ultimate##10true goto; 9#$Ultimate##12true assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 5#L15true assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 8#$Ultimate##3true [2023-02-16 04:32:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-16 04:32:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:30,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547806401] [2023-02-16 04:32:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:32:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:32:30,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1481770, now seen corresponding path program 1 times [2023-02-16 04:32:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:30,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843263380] [2023-02-16 04:32:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:30,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:32:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:32:30,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 04:32:30,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843263380] [2023-02-16 04:32:30,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843263380] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 04:32:30,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 04:32:30,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-16 04:32:30,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965507454] [2023-02-16 04:32:30,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 04:32:30,386 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-16 04:32:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 04:32:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 04:32:30,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 04:32:30,412 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 1 states have internal predecessors, (4), 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) [2023-02-16 04:32:30,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 04:32:30,417 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2023-02-16 04:32:30,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2023-02-16 04:32:30,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-16 04:32:30,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 11 transitions. [2023-02-16 04:32:30,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-02-16 04:32:30,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-16 04:32:30,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-02-16 04:32:30,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-16 04:32:30,424 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-16 04:32:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-02-16 04:32:30,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-16 04:32:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-02-16 04:32:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-02-16 04:32:30,441 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-16 04:32:30,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 04:32:30,444 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-16 04:32:30,444 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-16 04:32:30,444 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-02-16 04:32:30,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-16 04:32:30,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:32:30,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:32:30,445 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-16 04:32:30,445 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-02-16 04:32:30,446 INFO L748 eck$LassoCheckResult]: Stem: 39#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 40#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 41#$Ultimate##3 [2023-02-16 04:32:30,446 INFO L750 eck$LassoCheckResult]: Loop: 41#$Ultimate##3 goto; 36#$Ultimate##5 assume !(f_~i~0#1 < f_~k#1); 37#$Ultimate##10 goto; 34#$Ultimate##12 assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 35#L15 assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 41#$Ultimate##3 [2023-02-16 04:32:30,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:30,446 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-02-16 04:32:30,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:30,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080688193] [2023-02-16 04:32:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:32:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:32:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:30,456 INFO L85 PathProgramCache]: Analyzing trace with hash 34460407, now seen corresponding path program 1 times [2023-02-16 04:32:30,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:30,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498670839] [2023-02-16 04:32:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:30,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:32:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:32:30,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:30,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1805899893, now seen corresponding path program 1 times [2023-02-16 04:32:30,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:30,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332295126] [2023-02-16 04:32:30,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:30,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:32:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:30,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:32:30,540 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:32:30,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:32:30,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:32:30,541 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:32:30,541 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-16 04:32:30,541 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,541 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:32:30,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:32:30,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2023-02-16 04:32:30,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:32:30,542 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:32:30,553 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:30,575 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:30,581 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:30,644 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:32:30,644 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-16 04:32:30,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:30,647 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) [2023-02-16 04:32:30,647 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 [2023-02-16 04:32:30,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:32:30,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:32:30,671 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:32:30,671 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_~i~0#1=-8, ULTIMATE.start_f_~k#1=-8} Honda state: {ULTIMATE.start_f_~i~0#1=-8, ULTIMATE.start_f_~k#1=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:32:30,681 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 [2023-02-16 04:32:30,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:30,682 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) [2023-02-16 04:32:30,685 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 [2023-02-16 04:32:30,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:32:30,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:32:30,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-16 04:32:30,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:30,718 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) [2023-02-16 04:32:30,720 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 [2023-02-16 04:32:30,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-16 04:32:30,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:32:30,803 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-16 04:32:30,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-02-16 04:32:30,807 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:32:30,808 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:32:30,808 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:32:30,808 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:32:30,808 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-16 04:32:30,808 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,808 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:32:30,808 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:32:30,808 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2023-02-16 04:32:30,808 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:32:30,808 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:32:30,809 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:30,820 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:30,826 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:30,883 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:32:30,886 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-16 04:32:30,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:30,888 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) [2023-02-16 04:32:30,889 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 [2023-02-16 04:32:30,891 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 [2023-02-16 04:32:30,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:32:30,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:32:30,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:32:30,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:32:30,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:32:30,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:32:30,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:32:30,919 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:32:30,922 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 [2023-02-16 04:32:30,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:30,923 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) [2023-02-16 04:32:30,925 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 [2023-02-16 04:32:30,926 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 [2023-02-16 04:32:30,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:32:30,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:32:30,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:32:30,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:32:30,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:32:30,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:32:30,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:32:30,950 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-16 04:32:30,953 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-16 04:32:30,953 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-16 04:32:30,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:30,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:31,097 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) [2023-02-16 04:32:31,098 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 [2023-02-16 04:32:31,100 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-16 04:32:31,100 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-16 04:32:31,100 INFO L513 LassoAnalysis]: Proved termination. [2023-02-16 04:32:31,101 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0#1, ULTIMATE.start_f_~l#1) = -1*ULTIMATE.start_f_~j~0#1 + 1*ULTIMATE.start_f_~l#1 Supporting invariants [] [2023-02-16 04:32:31,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-16 04:32:31,109 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-16 04:32:31,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:32:31,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-16 04:32:31,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:32:31,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:32:31,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 04:32:31,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:32:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:32:31,190 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-16 04:32:31,191 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-16 04:32:31,212 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 16 states and 23 transitions. Complement of second has 4 states. [2023-02-16 04:32:31,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-16 04:32:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-16 04:32:31,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2023-02-16 04:32:31,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 5 letters. [2023-02-16 04:32:31,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:32:31,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 5 letters. [2023-02-16 04:32:31,217 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:32:31,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 10 letters. [2023-02-16 04:32:31,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:32:31,218 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-02-16 04:32:31,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-16 04:32:31,221 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2023-02-16 04:32:31,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-02-16 04:32:31,221 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-02-16 04:32:31,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2023-02-16 04:32:31,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-16 04:32:31,224 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2023-02-16 04:32:31,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2023-02-16 04:32:31,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-02-16 04:32:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2023-02-16 04:32:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2023-02-16 04:32:31,227 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-16 04:32:31,227 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-02-16 04:32:31,232 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-16 04:32:31,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2023-02-16 04:32:31,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-16 04:32:31,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-16 04:32:31,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-16 04:32:31,233 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-16 04:32:31,233 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-16 04:32:31,234 INFO L748 eck$LassoCheckResult]: Stem: 105#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 109#$Ultimate##3 goto; 100#$Ultimate##5 [2023-02-16 04:32:31,234 INFO L750 eck$LassoCheckResult]: Loop: 100#$Ultimate##5 assume !!(f_~i~0#1 < f_~k#1);f_#t~post0#1 := f_~i~0#1;f_~i~0#1 := 1 + f_#t~post0#1;havoc f_#t~post0#1; 101#L8 assume 0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2); 100#$Ultimate##5 [2023-02-16 04:32:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2023-02-16 04:32:31,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:31,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802145563] [2023-02-16 04:32:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:31,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:31,238 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:32:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:31,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:32:31,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:31,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2023-02-16 04:32:31,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:31,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781643646] [2023-02-16 04:32:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:31,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:31,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:32:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:31,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:32:31,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2023-02-16 04:32:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 04:32:31,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820937327] [2023-02-16 04:32:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 04:32:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 04:32:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:31,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 04:32:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 04:32:31,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 04:32:31,278 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:32:31,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:32:31,279 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:32:31,279 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:32:31,279 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-16 04:32:31,279 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,279 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:32:31,279 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:32:31,279 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2023-02-16 04:32:31,279 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:32:31,279 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:32:31,280 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:31,282 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:31,325 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:32:31,325 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-16 04:32:31,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:31,327 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) [2023-02-16 04:32:31,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:32:31,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:32:31,350 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 [2023-02-16 04:32:31,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-16 04:32:31,359 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0#1=0} Honda state: {ULTIMATE.start_f_#t~post0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-16 04:32:31,364 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 [2023-02-16 04:32:31,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:31,366 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) [2023-02-16 04:32:31,367 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 [2023-02-16 04:32:31,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-16 04:32:31,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:32:31,453 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 [2023-02-16 04:32:31,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:31,461 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2023-02-16 04:32:31,470 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 [2023-02-16 04:32:31,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-16 04:32:31,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-16 04:32:31,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-16 04:32:31,610 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-16 04:32:31,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-02-16 04:32:31,614 INFO L210 LassoAnalysis]: Preferences: [2023-02-16 04:32:31,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-16 04:32:31,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-16 04:32:31,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-16 04:32:31,614 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-16 04:32:31,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-16 04:32:31,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-16 04:32:31,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2023-02-16 04:32:31,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-16 04:32:31,614 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-16 04:32:31,615 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:31,623 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-16 04:32:31,692 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-16 04:32:31,692 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-16 04:32:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:31,702 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2023-02-16 04:32:31,706 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 [2023-02-16 04:32:31,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:32:31,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:32:31,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:32:31,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:32:31,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:32:31,713 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:32:31,713 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:32:31,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-16 04:32:31,724 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-16 04:32:31,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-16 04:32:31,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:31,730 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2023-02-16 04:32:31,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-16 04:32:31,733 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 [2023-02-16 04:32:31,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-16 04:32:31,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-16 04:32:31,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-16 04:32:31,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-16 04:32:31,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-16 04:32:31,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-16 04:32:31,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-16 04:32:31,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-16 04:32:31,758 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-16 04:32:31,758 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-16 04:32:31,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-16 04:32:31,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 04:32:31,759 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-02-16 04:32:31,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-16 04:32:31,762 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-16 04:32:31,762 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-16 04:32:31,762 INFO L513 LassoAnalysis]: Proved termination. [2023-02-16 04:32:31,762 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~k#1, ULTIMATE.start_f_~i~0#1) = 1*ULTIMATE.start_f_~k#1 - 1*ULTIMATE.start_f_~i~0#1 Supporting invariants [] [2023-02-16 04:32:31,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-16 04:32:31,769 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-16 04:32:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 04:32:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:32:31,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-16 04:32:31,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:32:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 04:32:31,793 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 04:32:31,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 04:32:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 04:32:31,815 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-16 04:32:31,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 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) [2023-02-16 04:32:31,832 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. 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 22 states and 32 transitions. Complement of second has 4 states. [2023-02-16 04:32:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-16 04:32:31,833 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) [2023-02-16 04:32:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2023-02-16 04:32:31,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 2 letters. [2023-02-16 04:32:31,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:32:31,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-16 04:32:31,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:32:31,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 4 letters. [2023-02-16 04:32:31,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-16 04:32:31,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2023-02-16 04:32:31,837 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-16 04:32:31,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2023-02-16 04:32:31,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-16 04:32:31,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-16 04:32:31,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-16 04:32:31,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-16 04:32:31,838 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 04:32:31,838 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 04:32:31,838 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 04:32:31,838 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-16 04:32:31,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-16 04:32:31,838 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-16 04:32:31,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-16 04:32:31,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.02 04:32:31 BoogieIcfgContainer [2023-02-16 04:32:31,847 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-16 04:32:31,847 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 04:32:31,847 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 04:32:31,847 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 04:32:31,848 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 04:32:30" (3/4) ... [2023-02-16 04:32:31,850 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-16 04:32:31,850 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 04:32:31,851 INFO L158 Benchmark]: Toolchain (without parser) took 2038.73ms. Allocated memory is still 134.2MB. Free memory was 89.3MB in the beginning and 88.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2023-02-16 04:32:31,851 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:32:31,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 110.87ms. Allocated memory is still 134.2MB. Free memory was 89.3MB in the beginning and 80.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 04:32:31,855 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.68ms. Allocated memory is still 134.2MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:32:31,855 INFO L158 Benchmark]: Boogie Preprocessor took 10.48ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 77.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 04:32:31,856 INFO L158 Benchmark]: RCFGBuilder took 197.90ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 68.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-16 04:32:31,856 INFO L158 Benchmark]: BuchiAutomizer took 1695.99ms. Allocated memory is still 134.2MB. Free memory was 68.3MB in the beginning and 88.8MB in the end (delta: -20.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:32:31,856 INFO L158 Benchmark]: Witness Printer took 3.34ms. Allocated memory is still 134.2MB. Free memory was 88.8MB in the beginning and 88.1MB in the end (delta: 682.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 04:32:31,862 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 110.87ms. Allocated memory is still 134.2MB. Free memory was 89.3MB in the beginning and 80.1MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.68ms. Allocated memory is still 134.2MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.48ms. Allocated memory is still 134.2MB. Free memory was 78.7MB in the beginning and 77.6MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 197.90ms. Allocated memory is still 134.2MB. Free memory was 77.6MB in the beginning and 68.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1695.99ms. Allocated memory is still 134.2MB. Free memory was 68.3MB in the beginning and 88.8MB in the end (delta: -20.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.34ms. Allocated memory is still 134.2MB. Free memory was 88.8MB in the beginning and 88.1MB in the end (delta: 682.4kB). 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * j + l and consists of 3 locations. One deterministic module has affine ranking function k + -1 * i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 32 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp78 ukn100 mio100 lsp100 div383 bol100 ite100 ukn100 eq145 hnf95 smp43 dnf100 smp100 tf106 neg96 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-16 04:32:31,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-16 04:32:32,074 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 Result: TRUE