./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3dbbec33 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.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 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 14:42:14,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:42:14,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:42:14,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:42:14,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:42:14,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:42:14,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:42:14,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:42:14,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:42:14,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:42:14,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:42:14,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:42:14,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:42:14,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:42:14,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:42:14,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:42:14,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:42:14,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:42:14,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:42:14,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:42:14,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:42:14,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:42:14,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:42:14,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:42:14,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:42:14,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:42:14,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:42:14,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:42:14,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:42:14,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:42:14,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:42:14,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:42:14,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:42:14,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:42:14,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:42:14,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:42:14,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:42:14,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:42:14,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:42:14,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:42:14,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:42:14,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-14 14:42:14,605 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:42:14,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:42:14,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:42:14,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:42:14,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:42:14,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:42:14,607 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:42:14,607 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-14 14:42:14,607 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-14 14:42:14,607 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-14 14:42:14,608 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-14 14:42:14,608 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-14 14:42:14,608 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-14 14:42:14,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:42:14,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-14 14:42:14,609 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:42:14,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-14 14:42:14,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:42:14,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:42:14,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:42:14,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:42:14,611 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-14 14:42:14,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c [2023-02-14 14:42:14,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:42:14,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:42:14,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:42:14,838 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:42:14,838 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:42:14,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2023-02-14 14:42:15,839 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:42:15,982 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:42:15,982 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2023-02-14 14:42:15,986 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c94aeed/4b43028c363944328fc778c72b348f28/FLAG452cd7f58 [2023-02-14 14:42:15,998 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72c94aeed/4b43028c363944328fc778c72b348f28 [2023-02-14 14:42:16,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:42:16,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:42:16,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:42:16,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:42:16,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:42:16,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:42:15" (1/1) ... [2023-02-14 14:42:16,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d86b381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16, skipping insertion in model container [2023-02-14 14:42:16,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:42:15" (1/1) ... [2023-02-14 14:42:16,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:42:16,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:42:16,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:42:16,110 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:42:16,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:42:16,126 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:42:16,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16 WrapperNode [2023-02-14 14:42:16,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:42:16,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:42:16,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:42:16,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:42:16,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,148 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-02-14 14:42:16,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:42:16,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:42:16,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:42:16,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:42:16,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,162 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:42:16,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:42:16,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:42:16,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:42:16,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (1/1) ... [2023-02-14 14:42:16,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:16,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:16,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-14 14:42:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:42:16,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:42:16,268 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:42:16,270 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:42:16,354 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:42:16,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:42:16,359 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 14:42:16,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:42:16 BoogieIcfgContainer [2023-02-14 14:42:16,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:42:16,362 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-14 14:42:16,362 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-14 14:42:16,365 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-14 14:42:16,366 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:42:16,366 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.02 02:42:15" (1/3) ... [2023-02-14 14:42:16,366 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bf5531a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:42:16, skipping insertion in model container [2023-02-14 14:42:16,367 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:42:16,367 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:42:16" (2/3) ... [2023-02-14 14:42:16,367 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7bf5531a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.02 02:42:16, skipping insertion in model container [2023-02-14 14:42:16,367 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-14 14:42:16,368 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:42:16" (3/3) ... [2023-02-14 14:42:16,368 INFO L332 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1.c [2023-02-14 14:42:16,420 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-14 14:42:16,420 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-14 14:42:16,420 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-14 14:42:16,420 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-14 14:42:16,420 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-14 14:42:16,424 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-14 14:42:16,425 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-14 14:42:16,425 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-14 14:42:16,433 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:16,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 14:42:16,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:16,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:16,450 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:42:16,450 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 14:42:16,450 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-14 14:42:16,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:16,452 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-14 14:42:16,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:16,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:16,453 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-14 14:42:16,453 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-14 14:42:16,458 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L17-2true [2023-02-14 14:42:16,459 INFO L750 eck$LassoCheckResult]: Loop: 4#L17-2true assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 2#L19-2true assume !(main_~y~0#1 < main_~x~0#1); 9#L19-3true main_~x~0#1 := main_~x~0#1 - 1; 4#L17-2true [2023-02-14 14:42:16,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-14 14:42:16,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:16,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71395030] [2023-02-14 14:42:16,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:16,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:16,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:16,548 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:16,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-02-14 14:42:16,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:16,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740557820] [2023-02-14 14:42:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:16,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:16,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:16,575 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:16,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:16,583 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2023-02-14 14:42:16,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:16,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289336526] [2023-02-14 14:42:16,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:16,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:16,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:16,605 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:16,688 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:16,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:16,689 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:16,689 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:16,689 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:42:16,689 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:16,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:16,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:16,689 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2023-02-14 14:42:16,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:16,702 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:16,713 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:16,721 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:16,724 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:16,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:16,800 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:42:16,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:16,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:16,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:16,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-14 14:42:16,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:16,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:16,821 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:16,821 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 14:42:16,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:16,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:16,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:16,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-14 14:42:16,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:16,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:16,876 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:16,876 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-14 14:42:16,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-02-14 14:42:16,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:16,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:16,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:16,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-14 14:42:16,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:16,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:16,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:16,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:16,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:16,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:16,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-14 14:42:16,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:42:16,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:16,949 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 14:42:16,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:16,955 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:16,955 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:16,955 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:16,955 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:16,955 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:42:16,955 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:16,955 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:16,955 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:16,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2023-02-14 14:42:16,955 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:16,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:16,959 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:16,971 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:16,982 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:17,037 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:17,040 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:42:17,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:17,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:17,042 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:17,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-14 14:42:17,050 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:42:17,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:17,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:17,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:17,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:17,060 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:17,061 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:17,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:42:17,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:17,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:17,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:17,089 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:17,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-14 14:42:17,093 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:42:17,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:17,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-14 14:42:17,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:17,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:17,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:17,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-14 14:42:17,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-14 14:42:17,127 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:42:17,131 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-14 14:42:17,131 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-14 14:42:17,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:17,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:17,175 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:17,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-14 14:42:17,177 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:42:17,177 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-14 14:42:17,177 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:42:17,178 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2023-02-14 14:42:17,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:17,183 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-14 14:42:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:17,215 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 14:42:17,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:17,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 14:42:17,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:17,280 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-14 14:42:17,281 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:17,307 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2023-02-14 14:42:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2023-02-14 14:42:17,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2023-02-14 14:42:17,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:17,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-14 14:42:17,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:17,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2023-02-14 14:42:17,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:17,315 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2023-02-14 14:42:17,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:42:17,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2023-02-14 14:42:17,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-02-14 14:42:17,325 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-14 14:42:17,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-02-14 14:42:17,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:42:17,326 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-14 14:42:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-02-14 14:42:17,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-14 14:42:17,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2023-02-14 14:42:17,342 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-02-14 14:42:17,342 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-02-14 14:42:17,342 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-14 14:42:17,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2023-02-14 14:42:17,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:42:17,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:17,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:17,343 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-14 14:42:17,343 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-14 14:42:17,344 INFO L748 eck$LassoCheckResult]: Stem: 79#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 80#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 77#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 74#L19-2 [2023-02-14 14:42:17,344 INFO L750 eck$LassoCheckResult]: Loop: 74#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 74#L19-2 [2023-02-14 14:42:17,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-14 14:42:17,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:17,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451414455] [2023-02-14 14:42:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:17,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:17,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:17,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:17,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-02-14 14:42:17,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:17,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349203411] [2023-02-14 14:42:17,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:17,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:17,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:17,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-02-14 14:42:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:17,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411233418] [2023-02-14 14:42:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:17,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:17,359 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:17,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:17,383 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:17,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:17,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:17,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:17,384 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:42:17,384 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:17,384 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:17,384 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:17,384 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2023-02-14 14:42:17,384 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:17,385 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:17,388 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:17,391 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:17,398 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:17,400 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:17,402 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:17,404 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:17,438 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:17,439 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:42:17,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:17,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:17,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-14 14:42:17,486 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:17,486 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:17,498 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-14 14:42:17,498 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: [] [2023-02-14 14:42:17,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:17,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:17,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:17,507 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:17,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-14 14:42:17,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:17,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:17,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:17,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:17,538 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:17,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:42:17,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:17,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-14 14:42:29,628 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2023-02-14 14:42:29,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:29,643 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:29,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:29,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:29,643 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:29,643 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:42:29,644 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:29,644 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:29,644 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:29,644 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2023-02-14 14:42:29,644 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:29,644 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:29,645 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:29,659 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:29,667 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:29,669 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:29,671 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:29,673 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:29,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:29,714 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:42:29,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:29,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:29,715 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:29,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-14 14:42:29,739 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:42:29,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:29,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:29,745 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:29,745 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:29,748 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:29,748 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:29,764 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-14 14:42:29,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:29,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:29,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:29,771 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-14 14:42:29,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-14 14:42:29,786 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:42:29,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:29,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:29,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:29,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:29,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:29,800 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:29,800 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:29,816 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:42:29,839 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2023-02-14 14:42:29,839 INFO L444 ModelExtractionUtils]: 1 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2023-02-14 14:42:29,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:29,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:29,841 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) [2023-02-14 14:42:29,843 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 [2023-02-14 14:42:29,844 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:42:29,866 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2023-02-14 14:42:29,866 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:42:29,866 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2023-02-14 14:42:29,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:29,882 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-02-14 14:42:29,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:29,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:42:29,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:29,909 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:42:29,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:29,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:29,910 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-14 14:42:29,910 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:29,935 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 14 states and 19 transitions. Complement of second has 5 states. [2023-02-14 14:42:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-14 14:42:29,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2023-02-14 14:42:29,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:29,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2023-02-14 14:42:29,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:29,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2023-02-14 14:42:29,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:29,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2023-02-14 14:42:29,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:42:29,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2023-02-14 14:42:29,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-02-14 14:42:29,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-02-14 14:42:29,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2023-02-14 14:42:29,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:42:29,941 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 14 transitions. [2023-02-14 14:42:29,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2023-02-14 14:42:29,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2023-02-14 14:42:29,944 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) [2023-02-14 14:42:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2023-02-14 14:42:29,944 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-14 14:42:29,944 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-14 14:42:29,944 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-14 14:42:29,944 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2023-02-14 14:42:29,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:42:29,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:29,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:29,946 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2023-02-14 14:42:29,946 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-14 14:42:29,947 INFO L748 eck$LassoCheckResult]: Stem: 140#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 141#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 138#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 136#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 137#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 139#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 135#L19-2 [2023-02-14 14:42:29,947 INFO L750 eck$LassoCheckResult]: Loop: 135#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 135#L19-2 [2023-02-14 14:42:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:29,947 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2023-02-14 14:42:29,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:29,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810460649] [2023-02-14 14:42:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:29,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:29,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:29,955 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:29,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:29,955 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2023-02-14 14:42:29,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:29,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178141342] [2023-02-14 14:42:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:29,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:29,958 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:29,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:29,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:29,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2023-02-14 14:42:29,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:29,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297034844] [2023-02-14 14:42:29,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:29,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:30,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:42:30,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297034844] [2023-02-14 14:42:30,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297034844] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:42:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125251630] [2023-02-14 14:42:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:30,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:42:30,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:30,037 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 14:42:30,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-14 14:42:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:42:30,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:30,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:42:30,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:30,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125251630] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:42:30,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:42:30,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-14 14:42:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107036564] [2023-02-14 14:42:30,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:42:30,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:42:30,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 14:42:30,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-02-14 14:42:30,146 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:42:30,216 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-02-14 14:42:30,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2023-02-14 14:42:30,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:42:30,217 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 11 states and 13 transitions. [2023-02-14 14:42:30,218 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-02-14 14:42:30,218 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-02-14 14:42:30,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2023-02-14 14:42:30,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-14 14:42:30,218 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-02-14 14:42:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2023-02-14 14:42:30,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2023-02-14 14:42:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-02-14 14:42:30,219 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-02-14 14:42:30,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 14:42:30,220 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-02-14 14:42:30,220 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-14 14:42:30,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2023-02-14 14:42:30,221 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-14 14:42:30,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-14 14:42:30,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-14 14:42:30,221 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2023-02-14 14:42:30,221 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-14 14:42:30,221 INFO L748 eck$LassoCheckResult]: Stem: 229#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 230#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 227#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 225#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 226#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 232#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 231#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 228#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 224#L19-2 [2023-02-14 14:42:30,221 INFO L750 eck$LassoCheckResult]: Loop: 224#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 224#L19-2 [2023-02-14 14:42:30,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:30,222 INFO L85 PathProgramCache]: Analyzing trace with hash 301557853, now seen corresponding path program 2 times [2023-02-14 14:42:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:30,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128160564] [2023-02-14 14:42:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:30,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:30,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:30,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:30,233 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 3 times [2023-02-14 14:42:30,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:30,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13582690] [2023-02-14 14:42:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:30,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:30,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:30,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:30,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:30,237 INFO L85 PathProgramCache]: Analyzing trace with hash 758358871, now seen corresponding path program 3 times [2023-02-14 14:42:30,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:42:30,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344421463] [2023-02-14 14:42:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:42:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:42:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:30,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-14 14:42:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-14 14:42:30,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-14 14:42:30,296 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:30,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:30,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:30,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:30,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-14 14:42:30,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:30,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:30,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:30,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2023-02-14 14:42:30,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:30,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:30,298 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,305 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,309 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,311 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,312 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,346 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:30,346 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-14 14:42:30,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:30,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:30,351 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) [2023-02-14 14:42:30,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-14 14:42:30,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:30,366 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 [2023-02-14 14:42:30,386 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 [2023-02-14 14:42:30,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:30,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:30,387 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) [2023-02-14 14:42:30,389 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 [2023-02-14 14:42:30,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-14 14:42:30,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-14 14:42:30,459 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-14 14:42:30,463 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 [2023-02-14 14:42:30,463 INFO L210 LassoAnalysis]: Preferences: [2023-02-14 14:42:30,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-14 14:42:30,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-14 14:42:30,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-14 14:42:30,463 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-14 14:42:30,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:30,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-14 14:42:30,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-14 14:42:30,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2023-02-14 14:42:30,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-14 14:42:30,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-14 14:42:30,465 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,488 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,491 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,493 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,495 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,497 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-14 14:42:30,546 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-14 14:42:30,546 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-14 14:42:30,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:30,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:30,548 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) [2023-02-14 14:42:30,553 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 [2023-02-14 14:42:30,554 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-14 14:42:30,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-14 14:42:30,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-14 14:42:30,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-14 14:42:30,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-14 14:42:30,565 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-14 14:42:30,565 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-14 14:42:30,580 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-14 14:42:30,586 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2023-02-14 14:42:30,587 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-02-14 14:42:30,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-14 14:42:30,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:42:30,589 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) [2023-02-14 14:42:30,590 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 [2023-02-14 14:42:30,591 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-14 14:42:30,600 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2023-02-14 14:42:30,600 INFO L513 LassoAnalysis]: Proved termination. [2023-02-14 14:42:30,600 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2023-02-14 14:42:30,605 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 [2023-02-14 14:42:30,607 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-02-14 14:42:30,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:42:30,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:42:30,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:30,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:30,644 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-14 14:42:30,644 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,661 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 16 states and 20 transitions. Complement of second has 5 states. [2023-02-14 14:42:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-14 14:42:30,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2023-02-14 14:42:30,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:30,663 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 14:42:30,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:42:30,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,697 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:42:30,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:30,698 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-14 14:42:30,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,731 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 16 states and 20 transitions. Complement of second has 5 states. [2023-02-14 14:42:30,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-14 14:42:30,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2023-02-14 14:42:30,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:30,732 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-14 14:42:30,742 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 [2023-02-14 14:42:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:42:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:42:30,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:30,768 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 [2023-02-14 14:42:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:42:30,777 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 14:42:30,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:42:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:42:30,778 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-14 14:42:30,779 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,797 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Result 12 states and 14 transitions. Complement of second has 4 states. [2023-02-14 14:42:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-14 14:42:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:42:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-14 14:42:30,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2023-02-14 14:42:30,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:30,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-14 14:42:30,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:30,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 2 letters. [2023-02-14 14:42:30,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-14 14:42:30,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2023-02-14 14:42:30,799 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 14:42:30,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2023-02-14 14:42:30,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-14 14:42:30,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-14 14:42:30,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-14 14:42:30,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-14 14:42:30,800 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:30,800 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:30,800 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 14:42:30,800 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-14 14:42:30,800 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-14 14:42:30,801 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-14 14:42:30,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-14 14:42:30,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.02 02:42:30 BoogieIcfgContainer [2023-02-14 14:42:30,806 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-14 14:42:30,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 14:42:30,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 14:42:30,807 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 14:42:30,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:42:16" (3/4) ... [2023-02-14 14:42:30,809 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-14 14:42:30,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 14:42:30,809 INFO L158 Benchmark]: Toolchain (without parser) took 14808.28ms. Allocated memory is still 132.1MB. Free memory was 97.6MB in the beginning and 95.2MB in the end (delta: 2.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2023-02-14 14:42:30,809 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:42:30,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 124.20ms. Allocated memory is still 132.1MB. Free memory was 97.2MB in the beginning and 88.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 14:42:30,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.22ms. Allocated memory is still 132.1MB. Free memory was 88.3MB in the beginning and 87.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 14:42:30,810 INFO L158 Benchmark]: Boogie Preprocessor took 14.84ms. Allocated memory is still 132.1MB. Free memory was 87.0MB in the beginning and 85.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:42:30,810 INFO L158 Benchmark]: RCFGBuilder took 196.58ms. Allocated memory is still 132.1MB. Free memory was 85.9MB in the beginning and 77.7MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 14:42:30,811 INFO L158 Benchmark]: BuchiAutomizer took 14444.18ms. Allocated memory is still 132.1MB. Free memory was 77.7MB in the beginning and 96.2MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:42:30,811 INFO L158 Benchmark]: Witness Printer took 2.56ms. Allocated memory is still 132.1MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 14:42:30,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory is still 84.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 124.20ms. Allocated memory is still 132.1MB. Free memory was 97.2MB in the beginning and 88.3MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.22ms. Allocated memory is still 132.1MB. Free memory was 88.3MB in the beginning and 87.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.84ms. Allocated memory is still 132.1MB. Free memory was 87.0MB in the beginning and 85.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 196.58ms. Allocated memory is still 132.1MB. Free memory was 85.9MB in the beginning and 77.7MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 14444.18ms. Allocated memory is still 132.1MB. Free memory was 77.7MB in the beginning and 96.2MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.56ms. Allocated memory is still 132.1MB. Free memory is still 95.2MB. 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 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 13.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 23 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf102 neg97 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-14 14:42:30,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-14 14:42:31,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE