./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.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 bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:47:48,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:47:48,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:47:48,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:47:48,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:47:48,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:47:48,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:47:48,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:47:48,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:47:48,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:47:48,588 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:47:48,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:47:48,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:47:48,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:47:48,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:47:48,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:47:48,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:47:48,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:47:48,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:47:48,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:47:48,598 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:47:48,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:47:48,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:47:48,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:47:48,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:47:48,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:47:48,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:47:48,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:47:48,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:47:48,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:47:48,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:47:48,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:47:48,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:47:48,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:47:48,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:47:48,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:47:48,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:47:48,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:47:48,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:47:48,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:47:48,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:47:48,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:47:48,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 14:47:48,634 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:47:48,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:47:48,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:47:48,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:47:48,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:47:48,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:47:48,637 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:47:48,637 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 14:47:48,637 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 14:47:48,637 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 14:47:48,637 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 14:47:48,638 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 14:47:48,638 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 14:47:48,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:47:48,638 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:47:48,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:47:48,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:47:48,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 14:47:48,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 14:47:48,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 14:47:48,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:47:48,639 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 14:47:48,640 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:47:48,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 14:47:48,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:47:48,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:47:48,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:47:48,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:47:48,642 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 14:47:48,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb3f76d55016616b178303c0eddf93fcbee588d4887c9917c414ed1a56e984ba [2022-07-14 14:47:48,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:47:48,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:47:48,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:47:48,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:47:48,882 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:47:48,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2022-07-14 14:47:48,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cd886e35/42b0e9e2345e465885d9d373bb6e67d0/FLAG4d4c4fc73 [2022-07-14 14:47:49,345 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:47:49,346 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a.c [2022-07-14 14:47:49,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cd886e35/42b0e9e2345e465885d9d373bb6e67d0/FLAG4d4c4fc73 [2022-07-14 14:47:49,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cd886e35/42b0e9e2345e465885d9d373bb6e67d0 [2022-07-14 14:47:49,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:47:49,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:47:49,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:47:49,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:47:49,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:47:49,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18112f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49, skipping insertion in model container [2022-07-14 14:47:49,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:47:49,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:47:49,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:47:49,553 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:47:49,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:47:49,575 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:47:49,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49 WrapperNode [2022-07-14 14:47:49,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:47:49,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:47:49,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:47:49,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:47:49,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,602 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2022-07-14 14:47:49,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:47:49,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:47:49,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:47:49,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:47:49,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:47:49,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:47:49,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:47:49,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:47:49,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (1/1) ... [2022-07-14 14:47:49,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:49,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:49,657 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) [2022-07-14 14:47:49,684 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 [2022-07-14 14:47:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:47:49,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:47:49,745 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:47:49,746 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:47:49,813 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:47:49,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:47:49,820 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 14:47:49,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:49 BoogieIcfgContainer [2022-07-14 14:47:49,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:47:49,824 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 14:47:49,824 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 14:47:49,827 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 14:47:49,828 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:49,828 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 02:47:49" (1/3) ... [2022-07-14 14:47:49,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4054d118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:47:49, skipping insertion in model container [2022-07-14 14:47:49,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:49,830 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:49" (2/3) ... [2022-07-14 14:47:49,831 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4054d118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:47:49, skipping insertion in model container [2022-07-14 14:47:49,831 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:49,831 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:49" (3/3) ... [2022-07-14 14:47:49,833 INFO L354 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a.c [2022-07-14 14:47:49,889 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 14:47:49,889 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 14:47:49,889 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 14:47:49,889 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 14:47:49,889 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 14:47:49,890 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 14:47:49,890 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 14:47:49,890 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 14:47:49,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:47:49,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:49,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:49,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:49,913 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:47:49,913 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 14:47:49,914 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 14:47:49,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:47:49,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:49,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:49,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:49,916 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:47:49,916 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 14:47:49,921 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L17-2true [2022-07-14 14:47:49,922 INFO L754 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0#1); 4#L17true assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 3#L17-2true [2022-07-14 14:47:49,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:49,929 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-14 14:47:49,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:49,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49041239] [2022-07-14 14:47:49,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:49,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,004 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,020 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-07-14 14:47:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:50,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888286671] [2022-07-14 14:47:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:50,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,032 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:50,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:50,038 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-14 14:47:50,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:50,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47140292] [2022-07-14 14:47:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:50,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,048 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:50,128 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:50,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:50,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:50,129 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:50,129 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:47:50,129 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:50,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:50,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2022-07-14 14:47:50,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:50,130 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:50,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:50,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:50,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:50,274 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:50,275 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:47:50,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,283 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) [2022-07-14 14:47:50,290 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 [2022-07-14 14:47:50,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:50,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:50,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:47:50,308 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: [] [2022-07-14 14:47:50,326 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 [2022-07-14 14:47:50,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,328 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) [2022-07-14 14:47:50,331 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 [2022-07-14 14:47:50,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:50,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:50,348 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:47:50,348 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: [] [2022-07-14 14:47:50,366 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 [2022-07-14 14:47:50,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,375 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) [2022-07-14 14:47:50,377 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 [2022-07-14 14:47:50,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:50,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:50,410 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 [2022-07-14 14:47:50,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,412 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) [2022-07-14 14:47:50,413 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 [2022-07-14 14:47:50,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:47:50,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:50,444 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:47:50,448 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 [2022-07-14 14:47:50,449 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:50,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:50,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:50,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:50,449 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:47:50,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:50,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:50,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration1_Loop [2022-07-14 14:47:50,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:50,450 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:50,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:50,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:50,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:50,520 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:50,525 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:47:50,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,528 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) [2022-07-14 14:47:50,536 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 [2022-07-14 14:47:50,546 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:50,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:50,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:50,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:50,550 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 [2022-07-14 14:47:50,555 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:47:50,555 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:47:50,571 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:47:50,587 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 [2022-07-14 14:47:50,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,589 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) [2022-07-14 14:47:50,589 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 [2022-07-14 14:47:50,590 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 [2022-07-14 14:47:50,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:50,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:50,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:50,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:50,600 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:47:50,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:47:50,618 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:47:50,635 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 [2022-07-14 14:47:50,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,636 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) [2022-07-14 14:47:50,638 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 [2022-07-14 14:47:50,644 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 [2022-07-14 14:47:50,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:50,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:47:50,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:50,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:50,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:50,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:47:50,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:47:50,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:47:50,705 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:47:50,705 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:47:50,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:50,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:50,709 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) [2022-07-14 14:47:50,711 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:47:50,711 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:47:50,711 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:47:50,711 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-14 14:47:50,723 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 [2022-07-14 14:47:50,736 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 [2022-07-14 14:47:50,739 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:47:50,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:50,776 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:47:50,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:50,792 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:50,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:50,821 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-14 14:47:50,822 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-07-14 14:47:50,864 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) Result 24 states and 31 transitions. Complement of second has 6 states. [2022-07-14 14:47:50,866 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 [2022-07-14 14:47:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 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) [2022-07-14 14:47:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-14 14:47:50,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-14 14:47:50,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:50,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-14 14:47:50,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:50,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-14 14:47:50,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:50,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-07-14 14:47:50,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:50,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-14 14:47:50,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-14 14:47:50,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-07-14 14:47:50,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-14 14:47:50,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:47:50,887 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-14 14:47:50,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-14 14:47:50,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-14 14:47:50,905 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) [2022-07-14 14:47:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-07-14 14:47:50,905 INFO L392 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-14 14:47:50,905 INFO L374 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-14 14:47:50,906 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 14:47:50,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-07-14 14:47:50,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:50,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:50,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:50,906 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-14 14:47:50,907 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 14:47:50,907 INFO L752 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 75#L17-2 assume !!(0 != main_~x~0#1); 68#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 69#L17-2 [2022-07-14 14:47:50,907 INFO L754 eck$LassoCheckResult]: Loop: 69#L17-2 assume !!(0 != main_~x~0#1); 72#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 69#L17-2 [2022-07-14 14:47:50,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:50,907 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-14 14:47:50,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:50,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166179884] [2022-07-14 14:47:50,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:50,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,913 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-07-14 14:47:50,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:50,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913491186] [2022-07-14 14:47:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:50,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,919 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:50,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:50,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-07-14 14:47:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:50,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193645764] [2022-07-14 14:47:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:50,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:47:50,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193645764] [2022-07-14 14:47:50,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193645764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 14:47:50,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 14:47:50,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 14:47:50,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85040615] [2022-07-14 14:47:50,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 14:47:51,008 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:51,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:51,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:51,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:51,009 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:47:51,009 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,009 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:51,009 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:51,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2022-07-14 14:47:51,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:51,010 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:51,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,066 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:51,066 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:47:51,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,068 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) [2022-07-14 14:47:51,069 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 [2022-07-14 14:47:51,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:51,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:51,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:47:51,120 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:47:51,135 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 [2022-07-14 14:47:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,137 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) [2022-07-14 14:47:51,138 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 [2022-07-14 14:47:51,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:51,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:51,175 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:47:51,176 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:47:51,203 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 [2022-07-14 14:47:51,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,205 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) [2022-07-14 14:47:51,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:51,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:51,224 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 [2022-07-14 14:47:51,259 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 [2022-07-14 14:47:51,260 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 [2022-07-14 14:47:51,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,261 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) [2022-07-14 14:47:51,262 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 [2022-07-14 14:47:51,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:47:51,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:51,304 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:47:51,311 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 [2022-07-14 14:47:51,311 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:51,311 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:51,311 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:51,312 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:51,312 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:47:51,312 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,312 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:51,312 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:51,312 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration2_Loop [2022-07-14 14:47:51,312 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:51,312 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:51,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,365 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:51,365 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:47:51,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,368 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2022-07-14 14:47:51,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-14 14:47:51,382 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 [2022-07-14 14:47:51,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:51,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:51,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:51,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:51,396 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:47:51,396 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:47:51,423 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:47:51,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:51,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,449 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2022-07-14 14:47:51,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-14 14:47:51,455 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 [2022-07-14 14:47:51,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:51,463 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:51,463 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:51,463 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:51,465 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-14 14:47:51,465 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-14 14:47:51,479 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 14:47:51,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-07-14 14:47:51,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,505 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2022-07-14 14:47:51,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-14 14:47:51,508 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 [2022-07-14 14:47:51,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:51,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:47:51,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:51,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:51,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:51,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:47:51,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:47:51,527 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:47:51,529 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:47:51,529 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:47:51,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,531 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2022-07-14 14:47:51,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-14 14:47:51,537 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:47:51,537 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:47:51,537 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:47:51,537 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-14 14:47:51,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:51,555 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:47:51,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:51,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:47:51,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:51,590 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:51,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:51,595 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-14 14:47:51,595 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-14 14:47:51,607 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12 states and 17 transitions. Complement of second has 5 states. [2022-07-14 14:47:51,607 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 [2022-07-14 14:47:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-14 14:47:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-14 14:47:51,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-14 14:47:51,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:51,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-14 14:47:51,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:51,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-07-14 14:47:51,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:51,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-07-14 14:47:51,613 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:51,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-07-14 14:47:51,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-14 14:47:51,614 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 14:47:51,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-07-14 14:47:51,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:47:51,615 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-14 14:47:51,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-07-14 14:47:51,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-14 14:47:51,617 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) [2022-07-14 14:47:51,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-07-14 14:47:51,618 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-14 14:47:51,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:47:51,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:47:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:47:51,621 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-07-14 14:47:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:47:51,639 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2022-07-14 14:47:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 14:47:51,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2022-07-14 14:47:51,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:51,643 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 10 states and 12 transitions. [2022-07-14 14:47:51,643 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-14 14:47:51,643 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-14 14:47:51,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 12 transitions. [2022-07-14 14:47:51,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:47:51,644 INFO L369 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2022-07-14 14:47:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 12 transitions. [2022-07-14 14:47:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2022-07-14 14:47:51,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-07-14 14:47:51,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2022-07-14 14:47:51,645 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-14 14:47:51,646 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2022-07-14 14:47:51,646 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 14:47:51,646 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2022-07-14 14:47:51,647 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:51,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:51,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:51,647 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 14:47:51,647 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 14:47:51,648 INFO L752 eck$LassoCheckResult]: Stem: 155#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 156#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 157#L17-2 assume !!(0 != main_~x~0#1); 151#L17 [2022-07-14 14:47:51,648 INFO L754 eck$LassoCheckResult]: Loop: 151#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 152#L17-2 assume !!(0 != main_~x~0#1); 151#L17 [2022-07-14 14:47:51,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:51,648 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-14 14:47:51,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:51,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67529177] [2022-07-14 14:47:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:51,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:51,675 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:51,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2022-07-14 14:47:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:51,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579978870] [2022-07-14 14:47:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:51,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:51,683 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:51,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:51,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:51,695 INFO L85 PathProgramCache]: Analyzing trace with hash 28699749, now seen corresponding path program 2 times [2022-07-14 14:47:51,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:51,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116788085] [2022-07-14 14:47:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:51,699 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:51,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:51,727 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:51,727 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:51,727 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:51,727 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:51,727 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:47:51,727 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,727 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:51,727 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:51,727 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2022-07-14 14:47:51,727 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:51,728 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:51,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:51,786 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:47:51,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,788 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2022-07-14 14:47:51,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-14 14:47:51,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:51,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:51,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:51,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,834 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2022-07-14 14:47:51,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-14 14:47:51,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:47:51,837 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:51,898 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:47:51,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:51,903 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:51,904 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:51,904 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:51,904 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:51,904 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:47:51,904 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,904 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:51,904 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:51,904 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration3_Loop [2022-07-14 14:47:51,904 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:51,904 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:51,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:51,962 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:51,962 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:47:51,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:51,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:51,964 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2022-07-14 14:47:51,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-14 14:47:51,974 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 [2022-07-14 14:47:51,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:51,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:47:51,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:51,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:51,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:51,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:47:51,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:47:51,996 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:47:52,000 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:47:52,000 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:47:52,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:52,003 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2022-07-14 14:47:52,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-14 14:47:52,005 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:47:52,005 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:47:52,005 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:47:52,005 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-14 14:47:52,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:52,034 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:47:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,066 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:52,105 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:47:52,105 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 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) [2022-07-14 14:47:52,113 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. 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 12 states and 14 transitions. Complement of second has 5 states. [2022-07-14 14:47:52,113 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 [2022-07-14 14:47:52,114 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) [2022-07-14 14:47:52,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-14 14:47:52,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-14 14:47:52,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-14 14:47:52,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2022-07-14 14:47:52,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2022-07-14 14:47:52,115 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:52,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2022-07-14 14:47:52,116 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-14 14:47:52,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-14 14:47:52,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2022-07-14 14:47:52,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 14:47:52,116 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-07-14 14:47:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2022-07-14 14:47:52,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-07-14 14:47:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:47:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-07-14 14:47:52,117 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-07-14 14:47:52,117 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-07-14 14:47:52,117 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 14:47:52,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2022-07-14 14:47:52,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-14 14:47:52,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:52,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:52,118 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2022-07-14 14:47:52,118 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-14 14:47:52,118 INFO L752 eck$LassoCheckResult]: Stem: 211#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 212#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 210#L17-2 assume !!(0 != main_~x~0#1); 208#L17 assume !(main_~x~0#1 > 0);main_~x~0#1 := 1 + main_~x~0#1; 209#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2022-07-14 14:47:52,119 INFO L754 eck$LassoCheckResult]: Loop: 206#L17 assume main_~x~0#1 > 0;main_~x~0#1 := main_~x~0#1 - 1; 207#L17-2 assume !!(0 != main_~x~0#1); 206#L17 [2022-07-14 14:47:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:52,119 INFO L85 PathProgramCache]: Analyzing trace with hash 28699811, now seen corresponding path program 2 times [2022-07-14 14:47:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:52,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489873251] [2022-07-14 14:47:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:52,124 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:52,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:52,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:52,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2022-07-14 14:47:52,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:52,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763318437] [2022-07-14 14:47:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:52,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:52,131 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:52,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:52,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:52,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:52,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1810715040, now seen corresponding path program 2 times [2022-07-14 14:47:52,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:52,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335678525] [2022-07-14 14:47:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:52,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:52,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 14:47:52,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335678525] [2022-07-14 14:47:52,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335678525] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 14:47:52,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124955738] [2022-07-14 14:47:52,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 14:47:52,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 14:47:52,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:52,155 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 14:47:52,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-14 14:47:52,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 14:47:52,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 14:47:52,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:52,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 14:47:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:52,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124955738] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 14:47:52,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 14:47:52,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-07-14 14:47:52,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363887292] [2022-07-14 14:47:52,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 14:47:52,225 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:52,226 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:52,226 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:52,226 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:52,226 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 14:47:52,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:52,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:52,226 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2022-07-14 14:47:52,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:52,226 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:52,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:52,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:52,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:52,265 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:52,265 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 14:47:52,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:52,277 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2022-07-14 14:47:52,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:52,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:52,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-14 14:47:52,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 14:47:52,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 14:47:52,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:52,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:52,329 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2022-07-14 14:47:52,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-14 14:47:52,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 14:47:52,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:52,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:52,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:52,363 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2022-07-14 14:47:52,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-14 14:47:52,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 14:47:52,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 14:47:52,419 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 14:47:52,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-07-14 14:47:52,422 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 14:47:52,422 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 14:47:52,422 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 14:47:52,422 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 14:47:52,422 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 14:47:52,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,423 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 14:47:52,423 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 14:47:52,423 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a.c_Iteration4_Loop [2022-07-14 14:47:52,423 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 14:47:52,423 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 14:47:52,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:52,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:52,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 14:47:52,469 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 14:47:52,470 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 14:47:52,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:52,471 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2022-07-14 14:47:52,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-14 14:47:52,484 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 [2022-07-14 14:47:52,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 14:47:52,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 14:47:52,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 14:47:52,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 14:47:52,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 14:47:52,493 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 14:47:52,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 14:47:52,511 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 14:47:52,514 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 14:47:52,515 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 14:47:52,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:52,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:52,520 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2022-07-14 14:47:52,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-14 14:47:52,523 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 14:47:52,524 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 14:47:52,524 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 14:47:52,524 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-14 14:47:52,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-14 14:47:52,546 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 14:47:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,578 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:52,593 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:47:52,593 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-14 14:47:52,597 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 8 states and 9 transitions. Complement of second has 3 states. [2022-07-14 14:47:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-07-14 14:47:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-14 14:47:52,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-14 14:47:52,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-14 14:47:52,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,599 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:47:52,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,629 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:52,641 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:47:52,641 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-14 14:47:52,645 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 8 states and 9 transitions. Complement of second has 3 states. [2022-07-14 14:47:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2022-07-14 14:47:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-14 14:47:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2022-07-14 14:47:52,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-14 14:47:52,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,647 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 14:47:52,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:52,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 14:47:52,666 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 14:47:52,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 14:47:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 14:47:52,679 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-14 14:47:52,679 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-14 14:47:52,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:52,687 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 9 states and 10 transitions. Complement of second has 4 states. [2022-07-14 14:47:52,688 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 [2022-07-14 14:47:52,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-07-14 14:47:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-14 14:47:52,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-14 14:47:52,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-14 14:47:52,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-14 14:47:52,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 14:47:52,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-07-14 14:47:52,690 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 14:47:52,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2022-07-14 14:47:52,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 14:47:52,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 14:47:52,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 14:47:52,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 14:47:52,691 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:52,691 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:52,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 14:47:52,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 14:47:52,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 14:47:52,692 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. 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) [2022-07-14 14:47:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 14:47:52,692 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-14 14:47:52,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 14:47:52,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-14 14:47:52,693 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 14:47:52,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-14 14:47:52,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 14:47:52,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 14:47:52,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 14:47:52,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 14:47:52,694 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:52,694 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:52,694 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 14:47:52,694 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-14 14:47:52,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-14 14:47:52,694 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 14:47:52,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-14 14:47:52,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 02:47:52 BoogieIcfgContainer [2022-07-14 14:47:52,701 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 14:47:52,701 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 14:47:52,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 14:47:52,702 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 14:47:52,702 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:49" (3/4) ... [2022-07-14 14:47:52,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 14:47:52,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 14:47:52,705 INFO L158 Benchmark]: Toolchain (without parser) took 3338.41ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 63.1MB in the beginning and 89.5MB in the end (delta: -26.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:52,706 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:52,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.86ms. Allocated memory is still 96.5MB. Free memory was 62.8MB in the beginning and 73.1MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 14:47:52,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.14ms. Allocated memory is still 96.5MB. Free memory was 73.1MB in the beginning and 71.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:52,707 INFO L158 Benchmark]: Boogie Preprocessor took 13.99ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 71.0MB in the end (delta: 846.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:47:52,707 INFO L158 Benchmark]: RCFGBuilder took 201.78ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 63.2MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 14:47:52,707 INFO L158 Benchmark]: BuchiAutomizer took 2877.09ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 63.2MB in the beginning and 89.5MB in the end (delta: -26.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2022-07-14 14:47:52,708 INFO L158 Benchmark]: Witness Printer took 3.26ms. Allocated memory is still 123.7MB. Free memory is still 89.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:52,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.86ms. Allocated memory is still 96.5MB. Free memory was 62.8MB in the beginning and 73.1MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.14ms. Allocated memory is still 96.5MB. Free memory was 73.1MB in the beginning and 71.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.99ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 71.0MB in the end (delta: 846.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 201.78ms. Allocated memory is still 96.5MB. Free memory was 70.7MB in the beginning and 63.2MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 2877.09ms. Allocated memory was 96.5MB in the beginning and 123.7MB in the end (delta: 27.3MB). Free memory was 63.2MB in the beginning and 89.5MB in the end (delta: -26.3MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. * Witness Printer took 3.26ms. Allocated memory is still 123.7MB. Free memory is still 89.5MB. 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 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 29 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf95 smp68 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 45ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-14 14:47:52,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-14 14:47:52,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-07-14 14:47:52,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-14 14:47:53,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE