./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Sunset.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Sunset.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 b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:48:36,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:48:36,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:48:36,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:48:36,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:48:36,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:48:36,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:48:36,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:48:36,620 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:48:36,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:48:36,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:48:36,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:48:36,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:48:36,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:48:36,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:48:36,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:48:36,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:48:36,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:48:36,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:48:36,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:48:36,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:48:36,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:48:36,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:48:36,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:48:36,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:48:36,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:48:36,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:48:36,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:48:36,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:48:36,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:48:36,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:48:36,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:48:36,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:48:36,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:48:36,643 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:48:36,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:48:36,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:48:36,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:48:36,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:48:36,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:48:36,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:48:36,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-22 19:48:36,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:48:36,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:48:36,679 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:48:36,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:48:36,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:48:36,681 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:48:36,681 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:48:36,682 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-22 19:48:36,682 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-22 19:48:36,682 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-22 19:48:36,683 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-22 19:48:36,683 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-22 19:48:36,683 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-22 19:48:36,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:48:36,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:48:36,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:48:36,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:48:36,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-22 19:48:36,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-22 19:48:36,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-22 19:48:36,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:48:36,685 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-22 19:48:36,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:48:36,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-22 19:48:36,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:48:36,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:48:36,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:48:36,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:48:36,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:48:36,687 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-22 19:48:36,687 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 [2021-12-22 19:48:36,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:48:36,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:48:36,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:48:36,939 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:48:36,939 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:48:36,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-12-22 19:48:36,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d746544/3f7f61b2561a467cb50a04bf9c4fb17d/FLAGd28b46809 [2021-12-22 19:48:37,434 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:48:37,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-12-22 19:48:37,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d746544/3f7f61b2561a467cb50a04bf9c4fb17d/FLAGd28b46809 [2021-12-22 19:48:37,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4d746544/3f7f61b2561a467cb50a04bf9c4fb17d [2021-12-22 19:48:37,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:48:37,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:48:37,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:48:37,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:48:37,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:48:37,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df5c11a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37, skipping insertion in model container [2021-12-22 19:48:37,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:48:37,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:48:37,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:48:37,695 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:48:37,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:48:37,718 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:48:37,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37 WrapperNode [2021-12-22 19:48:37,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:48:37,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:48:37,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:48:37,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:48:37,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,744 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2021-12-22 19:48:37,745 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:48:37,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:48:37,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:48:37,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:48:37,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:48:37,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:48:37,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:48:37,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:48:37,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (1/1) ... [2021-12-22 19:48:37,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:37,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:37,793 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) [2021-12-22 19:48:37,820 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 [2021-12-22 19:48:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:48:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:48:37,883 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:48:37,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:48:37,970 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:48:37,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:48:37,976 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:48:37,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:48:37 BoogieIcfgContainer [2021-12-22 19:48:37,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:48:37,981 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-22 19:48:37,981 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-22 19:48:37,984 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-22 19:48:37,985 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:48:37,985 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.12 07:48:37" (1/3) ... [2021-12-22 19:48:37,986 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@300f6301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:48:37, skipping insertion in model container [2021-12-22 19:48:37,986 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:48:37,987 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:48:37" (2/3) ... [2021-12-22 19:48:37,987 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@300f6301 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.12 07:48:37, skipping insertion in model container [2021-12-22 19:48:37,987 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-22 19:48:37,987 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:48:37" (3/3) ... [2021-12-22 19:48:37,989 INFO L388 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2021-12-22 19:48:38,036 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-22 19:48:38,037 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-22 19:48:38,037 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-22 19:48:38,037 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-22 19:48:38,037 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-22 19:48:38,037 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-22 19:48:38,037 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-22 19:48:38,038 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-22 19:48:38,051 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) [2021-12-22 19:48:38,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:48:38,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:38,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:38,070 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-22 19:48:38,070 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:48:38,070 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-22 19:48:38,071 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) [2021-12-22 19:48:38,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:48:38,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:38,072 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:38,073 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-22 19:48:38,073 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:48:38,078 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 4#L13-1true [2021-12-22 19:48:38,079 INFO L793 eck$LassoCheckResult]: Loop: 4#L13-1true assume !!(main_~i~0#1 > 10); 7#L10true assume !(25 == main_~i~0#1); 5#L10-2true assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 4#L13-1true [2021-12-22 19:48:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-22 19:48:38,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:38,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481076384] [2021-12-22 19:48:38,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:38,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:38,160 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:38,183 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2021-12-22 19:48:38,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:38,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206545938] [2021-12-22 19:48:38,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:38,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:38,204 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:38,220 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:38,222 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2021-12-22 19:48:38,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:38,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214292891] [2021-12-22 19:48:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:38,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:38,235 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:38,245 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:38,313 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:38,323 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:38,323 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:38,323 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:38,324 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:38,324 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,324 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:38,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:38,324 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-12-22 19:48:38,325 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:38,325 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:38,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:38,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:38,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:38,492 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:38,493 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:38,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,496 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) [2021-12-22 19:48:38,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:38,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:38,528 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 [2021-12-22 19:48:38,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:38,532 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: [] [2021-12-22 19:48:38,557 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 [2021-12-22 19:48:38,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,559 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) [2021-12-22 19:48:38,560 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 [2021-12-22 19:48:38,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:38,562 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:38,583 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:38,584 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: [] [2021-12-22 19:48:38,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:38,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,608 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) [2021-12-22 19:48:38,614 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 [2021-12-22 19:48:38,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:38,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:38,653 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 [2021-12-22 19:48:38,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,655 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) [2021-12-22 19:48:38,656 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 [2021-12-22 19:48:38,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:38,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:38,710 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:38,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-22 19:48:38,714 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:38,714 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:38,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:38,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:38,715 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:38,715 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:38,715 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:38,715 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-12-22 19:48:38,715 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:38,715 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:38,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:38,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:38,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:38,832 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:38,836 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:38,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,839 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) [2021-12-22 19:48:38,848 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 [2021-12-22 19:48:38,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:38,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:38,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:38,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:38,865 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:38,865 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:38,881 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 [2021-12-22 19:48:38,890 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:38,906 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 [2021-12-22 19:48:38,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,908 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) [2021-12-22 19:48:38,909 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 [2021-12-22 19:48:38,911 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 [2021-12-22 19:48:38,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:38,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:38,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:38,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:38,920 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:38,920 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:38,928 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:38,944 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 [2021-12-22 19:48:38,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,946 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) [2021-12-22 19:48:38,948 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 [2021-12-22 19:48:38,948 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 [2021-12-22 19:48:38,954 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:38,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:38,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:38,955 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-22 19:48:38,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:38,959 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-22 19:48:38,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:38,975 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:38,981 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-22 19:48:38,981 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-22 19:48:38,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:38,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:38,988 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) [2021-12-22 19:48:38,991 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:38,992 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:38,992 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:38,992 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-22 19:48:38,995 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 [2021-12-22 19:48:39,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-22 19:48:39,011 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:39,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:39,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:39,050 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:39,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:39,112 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-22 19:48:39,113 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) [2021-12-22 19:48:39,155 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 27 states and 36 transitions. Complement of second has 8 states. [2021-12-22 19:48:39,157 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 [2021-12-22 19:48:39,161 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) [2021-12-22 19:48:39,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-12-22 19:48:39,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-22 19:48:39,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:39,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-22 19:48:39,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:39,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-22 19:48:39,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:39,165 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 36 transitions. [2021-12-22 19:48:39,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:48:39,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 10 states and 15 transitions. [2021-12-22 19:48:39,173 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-22 19:48:39,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-22 19:48:39,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 15 transitions. [2021-12-22 19:48:39,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:39,174 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-12-22 19:48:39,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 15 transitions. [2021-12-22 19:48:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-22 19:48:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 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) [2021-12-22 19:48:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2021-12-22 19:48:39,197 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-12-22 19:48:39,197 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-12-22 19:48:39,197 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-22 19:48:39,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2021-12-22 19:48:39,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:48:39,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:39,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:39,200 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-22 19:48:39,200 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:48:39,200 INFO L791 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 87#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 83#L13-1 assume !!(main_~i~0#1 > 10); 85#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 79#L10-2 [2021-12-22 19:48:39,201 INFO L793 eck$LassoCheckResult]: Loop: 79#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 80#L13-1 assume !!(main_~i~0#1 > 10); 88#L10 assume !(25 == main_~i~0#1); 79#L10-2 [2021-12-22 19:48:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-22 19:48:39,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:39,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616413701] [2021-12-22 19:48:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:39,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:39,208 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:39,213 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:39,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:39,214 INFO L85 PathProgramCache]: Analyzing trace with hash 49368, now seen corresponding path program 2 times [2021-12-22 19:48:39,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:39,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466439072] [2021-12-22 19:48:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:39,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:39,225 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:39,231 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664019, now seen corresponding path program 1 times [2021-12-22 19:48:39,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:39,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764685807] [2021-12-22 19:48:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:39,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:39,251 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:39,254 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:39,281 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:39,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:39,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:39,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:39,282 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:39,282 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:39,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:39,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-12-22 19:48:39,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:39,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:39,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:39,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:39,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:39,360 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:39,360 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:39,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:39,362 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) [2021-12-22 19:48:39,391 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 [2021-12-22 19:48:39,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:39,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:39,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:39,414 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: [] [2021-12-22 19:48:39,441 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 [2021-12-22 19:48:39,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:39,443 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) [2021-12-22 19:48:39,444 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 [2021-12-22 19:48:39,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:39,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:39,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:39,467 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-22 19:48:39,494 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 [2021-12-22 19:48:39,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:39,496 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) [2021-12-22 19:48:39,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:39,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:39,511 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 [2021-12-22 19:48:39,550 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 [2021-12-22 19:48:39,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:39,552 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) [2021-12-22 19:48:39,558 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 [2021-12-22 19:48:39,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:39,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:39,773 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:39,781 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 [2021-12-22 19:48:39,781 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:39,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:39,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:39,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:39,781 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:39,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:39,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:39,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-12-22 19:48:39,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:39,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:39,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:39,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:39,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:39,876 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:39,876 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:39,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:39,880 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) [2021-12-22 19:48:39,881 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 [2021-12-22 19:48:39,883 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 [2021-12-22 19:48:39,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:39,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:39,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:39,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:39,893 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:39,893 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:39,907 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:39,931 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 [2021-12-22 19:48:39,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:39,932 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:48:39,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-22 19:48:39,967 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 [2021-12-22 19:48:39,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:39,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:39,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:39,975 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-22 19:48:39,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:39,976 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-22 19:48:39,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:39,991 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:39,994 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:39,994 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-22 19:48:39,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:39,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,003 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) [2021-12-22 19:48:40,012 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 [2021-12-22 19:48:40,012 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:40,012 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:40,012 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:40,013 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-22 19:48:40,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:40,039 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:40,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:40,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:40,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:40,072 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:40,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:40,121 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-22 19:48:40,121 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:48:40,147 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 33 transitions. Complement of second has 7 states. [2021-12-22 19:48:40,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 19:48:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:48:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-22 19:48:40,151 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-22 19:48:40,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:40,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-22 19:48:40,152 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:40,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-22 19:48:40,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:40,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 33 transitions. [2021-12-22 19:48:40,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:48:40,159 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 28 transitions. [2021-12-22 19:48:40,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 19:48:40,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-22 19:48:40,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 28 transitions. [2021-12-22 19:48:40,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:40,159 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-22 19:48:40,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 28 transitions. [2021-12-22 19:48:40,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-12-22 19:48:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 states have internal predecessors, (26), 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) [2021-12-22 19:48:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2021-12-22 19:48:40,179 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2021-12-22 19:48:40,179 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2021-12-22 19:48:40,179 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-22 19:48:40,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 26 transitions. [2021-12-22 19:48:40,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-22 19:48:40,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:40,180 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:40,180 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-12-22 19:48:40,180 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:48:40,181 INFO L791 eck$LassoCheckResult]: Stem: 164#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 165#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 169#L13-1 assume !!(main_~i~0#1 > 10); 170#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 157#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 158#L13-1 assume !!(main_~i~0#1 > 10); 163#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 167#L10-2 [2021-12-22 19:48:40,181 INFO L793 eck$LassoCheckResult]: Loop: 167#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 161#L13-1 assume !!(main_~i~0#1 > 10); 162#L10 assume !(25 == main_~i~0#1); 167#L10-2 [2021-12-22 19:48:40,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:40,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664017, now seen corresponding path program 1 times [2021-12-22 19:48:40,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:40,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043042694] [2021-12-22 19:48:40,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:40,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:40,214 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 [2021-12-22 19:48:40,239 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 [2021-12-22 19:48:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:40,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:40,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043042694] [2021-12-22 19:48:40,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043042694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:48:40,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:48:40,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 19:48:40,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078026275] [2021-12-22 19:48:40,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:48:40,248 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:48:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:40,249 INFO L85 PathProgramCache]: Analyzing trace with hash 49368, now seen corresponding path program 3 times [2021-12-22 19:48:40,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:40,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210395811] [2021-12-22 19:48:40,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:40,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,254 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:40,259 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:40,280 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:40,280 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:40,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:40,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:40,280 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:40,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:40,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:40,281 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-12-22 19:48:40,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:40,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:40,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,373 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:40,374 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:40,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,375 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) [2021-12-22 19:48:40,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:40,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:40,384 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 [2021-12-22 19:48:40,406 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:40,406 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-22 19:48:40,431 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 [2021-12-22 19:48:40,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,433 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) [2021-12-22 19:48:40,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:40,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:40,452 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 [2021-12-22 19:48:40,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:40,456 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-22 19:48:40,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-22 19:48:40,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,474 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) [2021-12-22 19:48:40,475 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 [2021-12-22 19:48:40,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:40,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:40,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-22 19:48:40,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,501 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:48:40,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-22 19:48:40,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:40,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:40,692 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:40,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-22 19:48:40,696 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:40,696 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:40,696 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:40,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:40,697 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:40,697 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,697 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:40,697 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:40,697 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-12-22 19:48:40,697 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:40,697 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:40,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:40,770 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:40,770 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:40,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,775 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:48:40,782 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 [2021-12-22 19:48:40,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:40,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:40,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:40,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:40,793 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:40,793 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:40,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-22 19:48:40,815 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:40,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:40,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,835 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2021-12-22 19:48:40,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-22 19:48:40,837 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 [2021-12-22 19:48:40,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:40,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:40,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:40,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:40,847 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-22 19:48:40,847 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-22 19:48:40,857 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-22 19:48:40,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:40,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,884 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:48:40,887 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 [2021-12-22 19:48:40,896 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:40,896 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:40,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:40,896 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-22 19:48:40,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:40,898 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-22 19:48:40,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:40,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-22 19:48:40,919 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:40,922 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:40,922 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-22 19:48:40,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:40,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:40,928 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:48:40,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-22 19:48:40,930 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:40,930 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:40,930 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:40,930 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-22 19:48:40,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-22 19:48:40,952 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:40,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:40,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:40,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:40,984 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:40,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,010 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-22 19:48:41,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-12-22 19:48:41,030 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 24 states and 35 transitions. Complement of second has 7 states. [2021-12-22 19:48:41,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 19:48:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-12-22 19:48:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-22 19:48:41,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-22 19:48:41,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,032 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-22 19:48:41,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,067 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-22 19:48:41,091 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-12-22 19:48:41,118 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 22 states and 33 transitions. Complement of second has 7 states. [2021-12-22 19:48:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 19:48:41,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-12-22 19:48:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-12-22 19:48:41,119 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-22 19:48:41,120 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,120 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-22 19:48:41,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,158 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,185 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-22 19:48:41,186 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-12-22 19:48:41,214 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 34 states and 50 transitions. Complement of second has 7 states. [2021-12-22 19:48:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 19:48:41,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-12-22 19:48:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-22 19:48:41,217 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-22 19:48:41,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-22 19:48:41,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-22 19:48:41,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,221 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2021-12-22 19:48:41,223 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-22 19:48:41,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 24 states and 37 transitions. [2021-12-22 19:48:41,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 19:48:41,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-22 19:48:41,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 37 transitions. [2021-12-22 19:48:41,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:41,227 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2021-12-22 19:48:41,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 37 transitions. [2021-12-22 19:48:41,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2021-12-22 19:48:41,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.5625) internal successors, (25), 15 states have internal predecessors, (25), 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) [2021-12-22 19:48:41,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 25 transitions. [2021-12-22 19:48:41,229 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2021-12-22 19:48:41,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 19:48:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 19:48:41,233 INFO L87 Difference]: Start difference. First operand 16 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:48:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:41,255 INFO L93 Difference]: Finished difference Result 19 states and 29 transitions. [2021-12-22 19:48:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 19:48:41,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 29 transitions. [2021-12-22 19:48:41,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-12-22 19:48:41,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 19 states and 29 transitions. [2021-12-22 19:48:41,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 19:48:41,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-22 19:48:41,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 29 transitions. [2021-12-22 19:48:41,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:41,258 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 29 transitions. [2021-12-22 19:48:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 29 transitions. [2021-12-22 19:48:41,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-12-22 19:48:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 16 states have internal predecessors, (26), 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) [2021-12-22 19:48:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2021-12-22 19:48:41,286 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2021-12-22 19:48:41,286 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2021-12-22 19:48:41,287 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-22 19:48:41,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 26 transitions. [2021-12-22 19:48:41,287 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-22 19:48:41,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:41,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:41,288 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-22 19:48:41,288 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-22 19:48:41,288 INFO L791 eck$LassoCheckResult]: Stem: 431#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 432#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 435#L13-1 assume !!(main_~i~0#1 > 10); 433#L10 [2021-12-22 19:48:41,288 INFO L793 eck$LassoCheckResult]: Loop: 433#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 424#L10-2 assume !(main_~i~0#1 <= 30);main_~i~0#1 := 20; 426#L13-1 assume !!(main_~i~0#1 > 10); 433#L10 [2021-12-22 19:48:41,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,289 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-22 19:48:41,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82419146] [2021-12-22 19:48:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,295 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,298 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash 43938, now seen corresponding path program 1 times [2021-12-22 19:48:41,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447677667] [2021-12-22 19:48:41,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:41,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:41,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447677667] [2021-12-22 19:48:41,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447677667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:48:41,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:48:41,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:48:41,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85681428] [2021-12-22 19:48:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:48:41,329 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-22 19:48:41,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:41,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:48:41,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:48:41,330 INFO L87 Difference]: Start difference. First operand 17 states and 26 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-12-22 19:48:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:41,339 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2021-12-22 19:48:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:48:41,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2021-12-22 19:48:41,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-22 19:48:41,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 18 states and 22 transitions. [2021-12-22 19:48:41,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-22 19:48:41,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-22 19:48:41,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 22 transitions. [2021-12-22 19:48:41,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:41,344 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2021-12-22 19:48:41,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 22 transitions. [2021-12-22 19:48:41,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-12-22 19:48:41,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-12-22 19:48:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-12-22 19:48:41,348 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-12-22 19:48:41,348 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-12-22 19:48:41,348 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-22 19:48:41,348 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-12-22 19:48:41,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-22 19:48:41,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:41,349 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:41,350 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1] [2021-12-22 19:48:41,350 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-12-22 19:48:41,350 INFO L791 eck$LassoCheckResult]: Stem: 471#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 472#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 474#L13-1 assume !!(main_~i~0#1 > 10); 473#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 468#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 467#L13-1 assume !!(main_~i~0#1 > 10); 466#L10 assume !(25 == main_~i~0#1); 469#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 470#L13-1 assume !!(main_~i~0#1 > 10); 479#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 475#L10-2 [2021-12-22 19:48:41,350 INFO L793 eck$LassoCheckResult]: Loop: 475#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 465#L13-1 assume !!(main_~i~0#1 > 10); 466#L10 assume !(25 == main_~i~0#1); 469#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 470#L13-1 assume !!(main_~i~0#1 > 10); 479#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 475#L10-2 [2021-12-22 19:48:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 997539140, now seen corresponding path program 2 times [2021-12-22 19:48:41,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040514702] [2021-12-22 19:48:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:48:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040514702] [2021-12-22 19:48:41,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040514702] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:48:41,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407943859] [2021-12-22 19:48:41,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:48:41,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:48:41,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,379 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:48:41,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-22 19:48:41,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:48:41,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:48:41,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:48:41,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407943859] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:48:41,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:48:41,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-22 19:48:41,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795799080] [2021-12-22 19:48:41,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:48:41,457 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-22 19:48:41,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1470741663, now seen corresponding path program 1 times [2021-12-22 19:48:41,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642939914] [2021-12-22 19:48:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,463 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,466 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:41,488 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:41,488 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:41,488 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:41,488 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:41,489 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-22 19:48:41,489 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,489 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:41,489 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:41,489 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-12-22 19:48:41,489 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:41,489 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:41,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,523 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:41,523 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-22 19:48:41,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,525 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:48:41,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:41,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-22 19:48:41,553 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-22 19:48:41,554 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-22 19:48:41,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:41,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,578 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-22 19:48:41,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-22 19:48:41,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-22 19:48:41,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:41,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,612 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2021-12-22 19:48:41,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-22 19:48:41,617 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-22 19:48:41,617 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-22 19:48:41,653 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-22 19:48:41,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:41,669 INFO L210 LassoAnalysis]: Preferences: [2021-12-22 19:48:41,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-22 19:48:41,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-22 19:48:41,669 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-22 19:48:41,669 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-22 19:48:41,669 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-22 19:48:41,669 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-22 19:48:41,669 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-12-22 19:48:41,669 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-22 19:48:41,669 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-22 19:48:41,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-22 19:48:41,709 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-22 19:48:41,709 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-22 19:48:41,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,711 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2021-12-22 19:48:41,720 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 [2021-12-22 19:48:41,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-22 19:48:41,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-22 19:48:41,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-22 19:48:41,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-22 19:48:41,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-22 19:48:41,728 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-22 19:48:41,728 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-22 19:48:41,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-22 19:48:41,734 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-22 19:48:41,735 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-22 19:48:41,735 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-22 19:48:41,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-22 19:48:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:48:41,736 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2021-12-22 19:48:41,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-22 19:48:41,738 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-22 19:48:41,738 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-22 19:48:41,738 INFO L513 LassoAnalysis]: Proved termination. [2021-12-22 19:48:41,738 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 57 Supporting invariants [] [2021-12-22 19:48:41,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:41,755 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-22 19:48:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:48:41,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 19:48:41,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:48:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:48:41,836 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-22 19:48:41,836 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-22 19:48:41,866 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 37 transitions. Complement of second has 7 states. [2021-12-22 19:48:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-22 19:48:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-22 19:48:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-22 19:48:41,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2021-12-22 19:48:41,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2021-12-22 19:48:41,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2021-12-22 19:48:41,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-22 19:48:41,870 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2021-12-22 19:48:41,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-22 19:48:41,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 36 transitions. [2021-12-22 19:48:41,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-22 19:48:41,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-22 19:48:41,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2021-12-22 19:48:41,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:41,873 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-22 19:48:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2021-12-22 19:48:41,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-12-22 19:48:41,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 25 states have internal predecessors, (32), 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) [2021-12-22 19:48:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2021-12-22 19:48:41,877 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 32 transitions. [2021-12-22 19:48:41,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:48:41,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 19:48:41,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 19:48:41,877 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:48:41,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:48:41,907 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2021-12-22 19:48:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 19:48:41,908 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 40 transitions. [2021-12-22 19:48:41,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-22 19:48:41,909 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 31 states and 35 transitions. [2021-12-22 19:48:41,909 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-22 19:48:41,909 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-22 19:48:41,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2021-12-22 19:48:41,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-22 19:48:41,909 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-12-22 19:48:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2021-12-22 19:48:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-12-22 19:48:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 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) [2021-12-22 19:48:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2021-12-22 19:48:41,913 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-12-22 19:48:41,913 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 30 transitions. [2021-12-22 19:48:41,913 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-22 19:48:41,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 30 transitions. [2021-12-22 19:48:41,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-22 19:48:41,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-22 19:48:41,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-22 19:48:41,914 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 2, 1, 1] [2021-12-22 19:48:41,914 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2021-12-22 19:48:41,915 INFO L791 eck$LassoCheckResult]: Stem: 711#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 712#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 714#L13-1 assume !!(main_~i~0#1 > 10); 713#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 708#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 707#L13-1 assume !!(main_~i~0#1 > 10); 706#L10 assume !(25 == main_~i~0#1); 709#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 710#L13-1 assume !!(main_~i~0#1 > 10); 730#L10 assume !(25 == main_~i~0#1); 729#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 728#L13-1 assume !!(main_~i~0#1 > 10); 727#L10 assume !(25 == main_~i~0#1); 726#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 725#L13-1 assume !!(main_~i~0#1 > 10); 724#L10 assume !(25 == main_~i~0#1); 720#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 721#L13-1 assume !!(main_~i~0#1 > 10); 719#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 718#L10-2 [2021-12-22 19:48:41,915 INFO L793 eck$LassoCheckResult]: Loop: 718#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 705#L13-1 assume !!(main_~i~0#1 > 10); 706#L10 assume !(25 == main_~i~0#1); 709#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 710#L13-1 assume !!(main_~i~0#1 > 10); 730#L10 assume !(25 == main_~i~0#1); 729#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 728#L13-1 assume !!(main_~i~0#1 > 10); 727#L10 assume !(25 == main_~i~0#1); 726#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 725#L13-1 assume !!(main_~i~0#1 > 10); 724#L10 assume !(25 == main_~i~0#1); 720#L10-2 assume main_~i~0#1 <= 30;main_~i~0#1 := main_~i~0#1 - 1; 721#L13-1 assume !!(main_~i~0#1 > 10); 719#L10 assume 25 == main_~i~0#1;main_~i~0#1 := 30; 718#L10-2 [2021-12-22 19:48:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1587470191, now seen corresponding path program 3 times [2021-12-22 19:48:41,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436121546] [2021-12-22 19:48:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,929 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:41,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1155970966, now seen corresponding path program 2 times [2021-12-22 19:48:41,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834020568] [2021-12-22 19:48:41,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,937 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:48:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1288805114, now seen corresponding path program 4 times [2021-12-22 19:48:41,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:48:41,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636257909] [2021-12-22 19:48:41,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:48:41,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:48:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,952 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 19:48:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 19:48:41,961 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 19:48:42,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.12 07:48:42 BoogieIcfgContainer [2021-12-22 19:48:42,081 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-22 19:48:42,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:48:42,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:48:42,082 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:48:42,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:48:37" (3/4) ... [2021-12-22 19:48:42,084 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-22 19:48:42,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:42,128 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:48:42,129 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:48:42,129 INFO L158 Benchmark]: Toolchain (without parser) took 4660.73ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 68.6MB in the beginning and 95.3MB in the end (delta: -26.7MB). Peak memory consumption was 45.1MB. Max. memory is 16.1GB. [2021-12-22 19:48:42,130 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 52.4MB in the beginning and 52.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:48:42,130 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.37ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 78.1MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:48:42,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.57ms. Allocated memory is still 100.7MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:48:42,130 INFO L158 Benchmark]: Boogie Preprocessor took 14.76ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 76.0MB in the end (delta: 863.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:48:42,131 INFO L158 Benchmark]: RCFGBuilder took 216.74ms. Allocated memory is still 100.7MB. Free memory was 76.0MB in the beginning and 68.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-22 19:48:42,131 INFO L158 Benchmark]: BuchiAutomizer took 4100.23ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 68.2MB in the beginning and 48.0MB in the end (delta: 20.2MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. [2021-12-22 19:48:42,131 INFO L158 Benchmark]: Witness Printer took 47.44ms. Allocated memory is still 121.6MB. Free memory was 48.0MB in the beginning and 95.3MB in the end (delta: -47.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 19:48:42,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 81.8MB. Free memory was 52.4MB in the beginning and 52.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.37ms. Allocated memory is still 100.7MB. Free memory was 68.1MB in the beginning and 78.1MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.57ms. Allocated memory is still 100.7MB. Free memory was 78.1MB in the beginning and 76.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.76ms. Allocated memory is still 100.7MB. Free memory was 76.8MB in the beginning and 76.0MB in the end (delta: 863.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 216.74ms. Allocated memory is still 100.7MB. Free memory was 76.0MB in the beginning and 68.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 4100.23ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 68.2MB in the beginning and 48.0MB in the end (delta: 20.2MB). Peak memory consumption was 43.7MB. Max. memory is 16.1GB. * Witness Printer took 47.44ms. Allocated memory is still 121.6MB. Free memory was 48.0MB in the beginning and 95.3MB in the end (delta: -47.3MB). Peak memory consumption was 4.2MB. 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 57 and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. The remainder module has 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 6 iterations. TraceHistogramMax:6. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 21 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 26 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/3 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 62 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 56 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 58 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax182 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq169 hnf94 smp100 dnf151 smp89 tf106 neg96 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=30, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6db11bb7=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 Loop: [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-22 19:48:42,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-22 19:48:42,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)