./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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/UpAndDown.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 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 17:18:35,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:18:35,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:18:35,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:18:35,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:18:35,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:18:35,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:18:35,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:18:35,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:18:35,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:18:35,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:18:35,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:18:35,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:18:35,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:18:35,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:18:35,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:18:35,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:18:35,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:18:35,749 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:18:35,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:18:35,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:18:35,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:18:35,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:18:35,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:18:35,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:18:35,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:18:35,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:18:35,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:18:35,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:18:35,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:18:35,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:18:35,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:18:35,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:18:35,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:18:35,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:18:35,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:18:35,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:18:35,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:18:35,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:18:35,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:18:35,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:18:35,773 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:18:35,786 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:18:35,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:18:35,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:18:35,787 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:18:35,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:18:35,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:18:35,788 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:18:35,788 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:18:35,788 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:18:35,788 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:18:35,788 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:18:35,788 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:18:35,788 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:18:35,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:18:35,789 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:18:35,789 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:18:35,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:18:35,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:18:35,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:18:35,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:18:35,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:18:35,790 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:18:35,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:18:35,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:18:35,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:18:35,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:18:35,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:18:35,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:18:35,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:18:35,791 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:18:35,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2021-12-19 17:18:35,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:18:36,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:18:36,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:18:36,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:18:36,010 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:18:36,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-12-19 17:18:36,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5419d621f/374f180c9d5b419f9092ed2130eebd34/FLAGd47c408b4 [2021-12-19 17:18:36,421 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:18:36,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2021-12-19 17:18:36,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5419d621f/374f180c9d5b419f9092ed2130eebd34/FLAGd47c408b4 [2021-12-19 17:18:36,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5419d621f/374f180c9d5b419f9092ed2130eebd34 [2021-12-19 17:18:36,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:18:36,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:18:36,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:18:36,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:18:36,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:18:36,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@646c2430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36, skipping insertion in model container [2021-12-19 17:18:36,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:18:36,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:18:36,557 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:18:36,559 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:18:36,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:18:36,577 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:18:36,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36 WrapperNode [2021-12-19 17:18:36,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:18:36,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:18:36,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:18:36,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:18:36,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,594 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-19 17:18:36,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:18:36,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:18:36,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:18:36,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:18:36,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:18:36,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:18:36,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:18:36,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:18:36,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (1/1) ... [2021-12-19 17:18:36,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:36,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:36,648 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) [2021-12-19 17:18:36,668 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 [2021-12-19 17:18:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:18:36,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:18:36,717 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:18:36,718 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:18:36,769 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:18:36,773 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:18:36,773 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:18:36,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:36 BoogieIcfgContainer [2021-12-19 17:18:36,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:18:36,775 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:18:36,775 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:18:36,777 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:18:36,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:36,778 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:18:36" (1/3) ... [2021-12-19 17:18:36,778 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ea5411f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:18:36, skipping insertion in model container [2021-12-19 17:18:36,778 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:36,779 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:18:36" (2/3) ... [2021-12-19 17:18:36,779 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ea5411f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:18:36, skipping insertion in model container [2021-12-19 17:18:36,779 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:18:36,779 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:36" (3/3) ... [2021-12-19 17:18:36,780 INFO L388 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2021-12-19 17:18:36,806 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:18:36,806 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:18:36,807 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:18:36,807 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:18:36,807 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:18:36,807 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:18:36,807 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:18:36,807 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:18:36,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:36,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:18:36,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:36,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:36,827 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:36,827 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:36,827 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:18:36,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:36,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:18:36,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:36,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:36,829 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:18:36,829 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:36,833 INFO L791 eck$LassoCheckResult]: Stem: 5#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 6#L18-1true [2021-12-19 17:18:36,833 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11#L12true assume !(10 == main_~i~0#1); 3#L12-2true assume 0 == main_~i~0#1;main_~up~0#1 := 1; 8#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6#L18-1true [2021-12-19 17:18:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:18:36,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:36,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935594676] [2021-12-19 17:18:36,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:36,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:36,892 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:36,918 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:36,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2021-12-19 17:18:36,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:36,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418211016] [2021-12-19 17:18:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:36,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:36,938 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:36,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:36,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:36,943 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2021-12-19 17:18:36,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:36,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930315544] [2021-12-19 17:18:36,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:36,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:36,960 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:36,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:37,073 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:37,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:37,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:37,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:37,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:37,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:37,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:37,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2021-12-19 17:18:37,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:37,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:37,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,168 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:37,169 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:37,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,172 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) [2021-12-19 17:18:37,173 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 [2021-12-19 17:18:37,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:37,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:37,194 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:37,194 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: [] [2021-12-19 17:18:37,209 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 [2021-12-19 17:18:37,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,211 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) [2021-12-19 17:18:37,212 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 [2021-12-19 17:18:37,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:37,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:37,237 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:37,237 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: [] [2021-12-19 17:18:37,255 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 [2021-12-19 17:18:37,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,256 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) [2021-12-19 17:18:37,265 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 [2021-12-19 17:18:37,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:37,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:37,304 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 [2021-12-19 17:18:37,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,305 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) [2021-12-19 17:18:37,306 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 [2021-12-19 17:18:37,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:37,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:37,335 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:37,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:37,352 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:37,353 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:37,353 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:37,353 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:37,353 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:37,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,361 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:37,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:37,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2021-12-19 17:18:37,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:37,362 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:37,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,430 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:37,433 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:37,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,435 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) [2021-12-19 17:18:37,436 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 [2021-12-19 17:18:37,437 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 [2021-12-19 17:18:37,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:37,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:37,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:37,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:37,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:37,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:37,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:37,470 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:37,485 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 [2021-12-19 17:18:37,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,486 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) [2021-12-19 17:18:37,487 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 [2021-12-19 17:18:37,488 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 [2021-12-19 17:18:37,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:37,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:37,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:37,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:37,497 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:37,497 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:37,507 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:37,524 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 [2021-12-19 17:18:37,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,525 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) [2021-12-19 17:18:37,526 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 [2021-12-19 17:18:37,527 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 [2021-12-19 17:18:37,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:37,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:37,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:37,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:37,538 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:37,538 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:37,557 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:37,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:37,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,574 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) [2021-12-19 17:18:37,576 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 [2021-12-19 17:18:37,577 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 [2021-12-19 17:18:37,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:37,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:37,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:37,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:37,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:37,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:37,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:37,607 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:37,609 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:37,609 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:18:37,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,615 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) [2021-12-19 17:18:37,616 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 [2021-12-19 17:18:37,616 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:37,616 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:37,616 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:37,617 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-19 17:18:37,634 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 [2021-12-19 17:18:37,636 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:37,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:37,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:37,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:37,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:37,720 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 [2021-12-19 17:18:37,721 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:37,759 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 54 transitions. Complement of second has 8 states. [2021-12-19 17:18:37,760 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 [2021-12-19 17:18:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-19 17:18:37,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-19 17:18:37,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:37,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-19 17:18:37,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:37,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-19 17:18:37,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:37,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2021-12-19 17:18:37,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-19 17:18:37,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2021-12-19 17:18:37,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-19 17:18:37,771 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-19 17:18:37,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2021-12-19 17:18:37,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:37,772 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-12-19 17:18:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2021-12-19 17:18:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-19 17:18:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 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) [2021-12-19 17:18:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-12-19 17:18:37,787 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-19 17:18:37,787 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-19 17:18:37,787 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:18:37,787 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2021-12-19 17:18:37,787 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-19 17:18:37,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:37,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:37,788 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:18:37,788 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:37,788 INFO L791 eck$LassoCheckResult]: Stem: 98#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 99#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 104#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2021-12-19 17:18:37,788 INFO L793 eck$LassoCheckResult]: Loop: 106#L12 assume !(10 == main_~i~0#1); 92#L12-2 assume !(0 == main_~i~0#1); 94#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 108#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2021-12-19 17:18:37,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:18:37,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:37,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374886183] [2021-12-19 17:18:37,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:37,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:37,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:37,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2021-12-19 17:18:37,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:37,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436291467] [2021-12-19 17:18:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:37,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:37,798 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:37,801 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:37,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2021-12-19 17:18:37,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:37,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021072404] [2021-12-19 17:18:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:37,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:37,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:37,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021072404] [2021-12-19 17:18:37,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021072404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:37,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:37,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:18:37,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625482900] [2021-12-19 17:18:37,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:37,857 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:37,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:37,857 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:37,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:37,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:37,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:37,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:37,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-12-19 17:18:37,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:37,858 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:37,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:37,970 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:37,970 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:37,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:37,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:37,977 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) [2021-12-19 17:18:37,978 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 [2021-12-19 17:18:38,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:38,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:38,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:38,024 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: [] [2021-12-19 17:18:38,041 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 [2021-12-19 17:18:38,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,042 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) [2021-12-19 17:18:38,043 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 [2021-12-19 17:18:38,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:38,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:38,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-19 17:18:38,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,071 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) [2021-12-19 17:18:38,072 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 [2021-12-19 17:18:38,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:38,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:38,141 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:38,146 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 [2021-12-19 17:18:38,147 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:38,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:38,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:38,147 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:38,147 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:38,147 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,147 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:38,147 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:38,147 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2021-12-19 17:18:38,147 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:38,147 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:38,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,214 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 [2021-12-19 17:18:38,254 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:38,254 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:38,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,262 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) [2021-12-19 17:18:38,263 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 [2021-12-19 17:18:38,264 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 [2021-12-19 17:18:38,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:38,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:38,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:38,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:38,274 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:38,274 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:38,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:38,304 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 [2021-12-19 17:18:38,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,306 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) [2021-12-19 17:18:38,314 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 [2021-12-19 17:18:38,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:38,320 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:38,320 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:38,320 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:18:38,320 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:38,320 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 [2021-12-19 17:18:38,322 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:18:38,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:38,335 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:38,337 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:38,337 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:18:38,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,338 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) [2021-12-19 17:18:38,339 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 [2021-12-19 17:18:38,340 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:38,340 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:38,340 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:38,341 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2021-12-19 17:18:38,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-19 17:18:38,356 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:38,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:38,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:38,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:38,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:38,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:38,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:38,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:38,426 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 [2021-12-19 17:18:38,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 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) [2021-12-19 17:18:38,444 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. 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 28 states and 43 transitions. Complement of second has 7 states. [2021-12-19 17:18:38,445 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 [2021-12-19 17:18:38,445 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) [2021-12-19 17:18:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-19 17:18:38,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-19 17:18:38,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:38,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-19 17:18:38,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:38,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-19 17:18:38,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:38,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2021-12-19 17:18:38,447 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:18:38,448 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2021-12-19 17:18:38,448 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-19 17:18:38,448 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-12-19 17:18:38,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2021-12-19 17:18:38,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:38,448 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 35 transitions. [2021-12-19 17:18:38,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2021-12-19 17:18:38,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-12-19 17:18:38,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 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) [2021-12-19 17:18:38,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2021-12-19 17:18:38,450 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 34 transitions. [2021-12-19 17:18:38,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:18:38,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:18:38,453 INFO L87 Difference]: Start difference. First operand 20 states and 34 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:38,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:38,460 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2021-12-19 17:18:38,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:18:38,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2021-12-19 17:18:38,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-19 17:18:38,462 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2021-12-19 17:18:38,462 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-19 17:18:38,462 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-19 17:18:38,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2021-12-19 17:18:38,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:38,463 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 46 transitions. [2021-12-19 17:18:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2021-12-19 17:18:38,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-12-19 17:18:38,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 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) [2021-12-19 17:18:38,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2021-12-19 17:18:38,465 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2021-12-19 17:18:38,465 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2021-12-19 17:18:38,465 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:18:38,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2021-12-19 17:18:38,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-19 17:18:38,466 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:38,466 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:38,466 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-19 17:18:38,466 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:38,466 INFO L791 eck$LassoCheckResult]: Stem: 241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 242#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 249#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 254#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 236#L12-2 assume !(0 == main_~i~0#1); 238#L15-1 [2021-12-19 17:18:38,466 INFO L793 eck$LassoCheckResult]: Loop: 238#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 258#L12 assume !(10 == main_~i~0#1); 256#L12-2 assume !(0 == main_~i~0#1); 238#L15-1 [2021-12-19 17:18:38,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:38,467 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2021-12-19 17:18:38,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:38,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045130727] [2021-12-19 17:18:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:38,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:38,473 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:38,475 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:38,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:38,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2021-12-19 17:18:38,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:38,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024651388] [2021-12-19 17:18:38,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:38,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:38,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:38,482 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:38,486 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:38,487 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2021-12-19 17:18:38,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:38,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110696909] [2021-12-19 17:18:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:38,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:38,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:38,494 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:38,514 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:38,514 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:38,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:38,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:38,515 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:38,515 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,515 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:38,515 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:38,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2021-12-19 17:18:38,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:38,515 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:38,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,563 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:38,564 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:38,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,565 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) [2021-12-19 17:18:38,566 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 [2021-12-19 17:18:38,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:38,567 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:38,588 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:38,588 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: [] [2021-12-19 17:18:38,607 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 [2021-12-19 17:18:38,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,608 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) [2021-12-19 17:18:38,609 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 [2021-12-19 17:18:38,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:38,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:38,622 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:38,622 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=4} Honda state: {ULTIMATE.start_main_~up~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:38,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:38,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,638 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) [2021-12-19 17:18:38,639 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 [2021-12-19 17:18:38,640 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:38,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:38,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:38,674 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,675 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) [2021-12-19 17:18:38,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:38,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:38,689 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 [2021-12-19 17:18:38,784 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:38,789 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 [2021-12-19 17:18:38,789 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:38,789 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:38,789 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:38,789 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:38,789 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:38,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:38,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:38,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2021-12-19 17:18:38,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:38,789 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:38,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:38,860 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:38,860 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:38,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,872 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) [2021-12-19 17:18:38,873 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 [2021-12-19 17:18:38,874 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 [2021-12-19 17:18:38,880 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:38,880 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:38,880 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:38,880 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:18:38,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:38,881 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:18:38,881 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:38,891 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:38,908 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 [2021-12-19 17:18:38,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,909 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) [2021-12-19 17:18:38,909 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 [2021-12-19 17:18:38,911 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 [2021-12-19 17:18:38,916 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:38,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:38,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:38,917 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:38,917 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:38,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:38,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:38,929 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:38,933 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:38,933 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:18:38,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:38,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:38,934 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) [2021-12-19 17:18:38,935 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 [2021-12-19 17:18:38,936 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:38,936 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:38,936 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:38,936 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 [] [2021-12-19 17:18:38,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-19 17:18:38,951 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:38,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:38,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:38,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:38,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:38,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:39,029 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 [2021-12-19 17:18:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:39,044 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 [2021-12-19 17:18:39,045 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20 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) [2021-12-19 17:18:39,055 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 [2021-12-19 17:18:39,070 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20. 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 65 states and 104 transitions. Complement of second has 7 states. [2021-12-19 17:18:39,070 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 [2021-12-19 17:18:39,071 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) [2021-12-19 17:18:39,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-19 17:18:39,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-19 17:18:39,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-19 17:18:39,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2021-12-19 17:18:39,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2021-12-19 17:18:39,086 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-12-19 17:18:39,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2021-12-19 17:18:39,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-19 17:18:39,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-12-19 17:18:39,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2021-12-19 17:18:39,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:39,088 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 98 transitions. [2021-12-19 17:18:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2021-12-19 17:18:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-12-19 17:18:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 55 states have internal predecessors, (94), 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) [2021-12-19 17:18:39,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2021-12-19 17:18:39,097 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2021-12-19 17:18:39,097 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2021-12-19 17:18:39,097 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:18:39,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2021-12-19 17:18:39,099 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-12-19 17:18:39,099 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:39,099 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:39,100 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-19 17:18:39,100 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:39,100 INFO L791 eck$LassoCheckResult]: Stem: 386#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 387#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 395#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 423#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 421#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 419#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 415#L18-1 [2021-12-19 17:18:39,100 INFO L793 eck$LassoCheckResult]: Loop: 415#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 412#L12 assume !(10 == main_~i~0#1); 404#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 405#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 415#L18-1 [2021-12-19 17:18:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2021-12-19 17:18:39,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:39,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935956087] [2021-12-19 17:18:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:39,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:39,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:39,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935956087] [2021-12-19 17:18:39,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935956087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:39,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:39,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:18:39,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498568221] [2021-12-19 17:18:39,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:39,111 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:18:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:39,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2021-12-19 17:18:39,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:39,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895538038] [2021-12-19 17:18:39,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:39,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:39,115 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:39,117 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:39,133 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:39,133 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:39,133 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:39,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:39,133 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:39,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:39,134 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:39,134 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-12-19 17:18:39,134 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:39,134 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:39,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,166 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:39,166 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:39,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,168 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) [2021-12-19 17:18:39,169 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 [2021-12-19 17:18:39,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:39,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:39,179 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:39,179 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:39,194 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 [2021-12-19 17:18:39,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,195 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:18:39,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-19 17:18:39,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:39,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:39,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:39,211 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: [] [2021-12-19 17:18:39,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:39,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,227 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) [2021-12-19 17:18:39,228 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 [2021-12-19 17:18:39,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:39,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:39,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:39,240 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:39,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-19 17:18:39,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,256 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) [2021-12-19 17:18:39,256 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 [2021-12-19 17:18:39,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:39,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:39,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-19 17:18:39,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,280 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) [2021-12-19 17:18:39,281 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 [2021-12-19 17:18:39,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:39,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:39,299 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:39,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-19 17:18:39,314 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:39,314 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:39,314 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:39,314 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:39,314 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:39,314 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,315 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:39,315 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:39,315 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2021-12-19 17:18:39,315 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:39,315 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:39,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,358 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:39,358 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:39,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,359 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) [2021-12-19 17:18:39,360 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 [2021-12-19 17:18:39,361 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 [2021-12-19 17:18:39,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:39,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:39,367 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:39,367 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:39,367 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:39,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:39,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:39,368 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:39,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-19 17:18:39,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,384 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) [2021-12-19 17:18:39,385 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 [2021-12-19 17:18:39,386 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 [2021-12-19 17:18:39,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:39,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:39,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:39,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:39,394 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:39,394 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:39,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:39,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-19 17:18:39,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,416 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2021-12-19 17:18:39,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-19 17:18:39,417 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 [2021-12-19 17:18:39,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:39,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:39,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:39,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:39,425 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:39,425 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:39,427 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:39,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-19 17:18:39,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,442 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2021-12-19 17:18:39,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-19 17:18:39,445 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 [2021-12-19 17:18:39,450 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:39,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:39,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:39,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:39,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:39,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:39,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:39,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:39,456 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:39,456 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:18:39,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,458 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2021-12-19 17:18:39,459 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:39,459 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:39,459 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:39,459 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-19 17:18:39,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-19 17:18:39,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-19 17:18:39,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:39,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:39,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:39,531 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 [2021-12-19 17:18:39,531 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:39,552 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 116 states and 190 transitions. Complement of second has 7 states. [2021-12-19 17:18:39,552 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 [2021-12-19 17:18:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:39,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-19 17:18:39,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-19 17:18:39,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-19 17:18:39,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2021-12-19 17:18:39,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 190 transitions. [2021-12-19 17:18:39,555 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2021-12-19 17:18:39,555 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 107 states and 175 transitions. [2021-12-19 17:18:39,555 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-12-19 17:18:39,556 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-12-19 17:18:39,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 175 transitions. [2021-12-19 17:18:39,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:39,556 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 175 transitions. [2021-12-19 17:18:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 175 transitions. [2021-12-19 17:18:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2021-12-19 17:18:39,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.6770833333333333) internal successors, (161), 95 states have internal predecessors, (161), 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) [2021-12-19 17:18:39,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 161 transitions. [2021-12-19 17:18:39,559 INFO L704 BuchiCegarLoop]: Abstraction has 96 states and 161 transitions. [2021-12-19 17:18:39,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:39,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:18:39,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:18:39,560 INFO L87 Difference]: Start difference. First operand 96 states and 161 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:39,571 INFO L93 Difference]: Finished difference Result 107 states and 163 transitions. [2021-12-19 17:18:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:18:39,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 163 transitions. [2021-12-19 17:18:39,573 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2021-12-19 17:18:39,573 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 101 states and 153 transitions. [2021-12-19 17:18:39,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-12-19 17:18:39,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-12-19 17:18:39,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 153 transitions. [2021-12-19 17:18:39,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:39,574 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 153 transitions. [2021-12-19 17:18:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 153 transitions. [2021-12-19 17:18:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2021-12-19 17:18:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 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) [2021-12-19 17:18:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2021-12-19 17:18:39,580 INFO L704 BuchiCegarLoop]: Abstraction has 96 states and 148 transitions. [2021-12-19 17:18:39,580 INFO L587 BuchiCegarLoop]: Abstraction has 96 states and 148 transitions. [2021-12-19 17:18:39,580 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:18:39,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 148 transitions. [2021-12-19 17:18:39,581 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2021-12-19 17:18:39,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:39,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:39,581 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2021-12-19 17:18:39,581 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:39,581 INFO L791 eck$LassoCheckResult]: Stem: 818#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 819#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 813#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 815#L12 assume !(10 == main_~i~0#1); 822#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 877#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 873#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 867#L12 assume !(10 == main_~i~0#1); 861#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 859#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 831#L18-1 [2021-12-19 17:18:39,581 INFO L793 eck$LassoCheckResult]: Loop: 831#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 853#L12 assume !(10 == main_~i~0#1); 832#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 830#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 831#L18-1 [2021-12-19 17:18:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:39,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1506873443, now seen corresponding path program 1 times [2021-12-19 17:18:39,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:39,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397735227] [2021-12-19 17:18:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:39,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:39,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:39,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397735227] [2021-12-19 17:18:39,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397735227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:39,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:39,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:18:39,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094392902] [2021-12-19 17:18:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:39,600 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:18:39,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:39,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 3 times [2021-12-19 17:18:39,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:39,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533966768] [2021-12-19 17:18:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:39,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:39,602 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:39,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:39,618 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:39,618 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:39,618 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:39,618 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:39,618 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:39,619 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,619 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:39,619 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:39,619 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-12-19 17:18:39,619 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:39,619 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:39,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,649 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:39,649 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:39,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,650 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2021-12-19 17:18:39,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-19 17:18:39,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:39,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:39,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-19 17:18:39,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,695 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2021-12-19 17:18:39,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-19 17:18:39,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:39,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:39,704 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:39,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-19 17:18:39,719 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:39,719 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:39,719 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:39,719 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:39,719 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:39,719 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,719 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:39,719 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:39,719 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2021-12-19 17:18:39,719 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:39,719 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:39,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:39,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:39,775 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:39,775 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:39,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,776 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2021-12-19 17:18:39,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-19 17:18:39,778 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 [2021-12-19 17:18:39,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:39,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:39,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:39,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:39,785 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:39,785 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:39,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:39,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-19 17:18:39,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,815 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2021-12-19 17:18:39,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-19 17:18:39,817 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 [2021-12-19 17:18:39,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:39,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:39,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:39,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:39,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:39,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:39,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:39,825 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:39,827 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:39,827 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:18:39,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:39,828 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2021-12-19 17:18:39,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-19 17:18:39,830 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:39,830 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:39,830 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:39,830 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-19 17:18:39,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-19 17:18:39,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:39,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:39,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:39,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:39,906 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 [2021-12-19 17:18:39,907 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:39,929 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 147 states and 221 transitions. Complement of second has 7 states. [2021-12-19 17:18:39,930 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 [2021-12-19 17:18:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-19 17:18:39,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-19 17:18:39,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,931 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:39,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:39,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:39,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:39,983 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:18:39,983 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:39,997 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 147 states and 221 transitions. Complement of second has 7 states. [2021-12-19 17:18:39,998 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 [2021-12-19 17:18:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-19 17:18:39,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-19 17:18:39,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:39,998 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:40,057 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:18:40,057 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,072 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 161 states and 250 transitions. Complement of second has 6 states. [2021-12-19 17:18:40,072 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 [2021-12-19 17:18:40,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-19 17:18:40,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-19 17:18:40,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-19 17:18:40,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 8 letters. [2021-12-19 17:18:40,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 250 transitions. [2021-12-19 17:18:40,075 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 32 [2021-12-19 17:18:40,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 119 states and 180 transitions. [2021-12-19 17:18:40,076 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2021-12-19 17:18:40,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2021-12-19 17:18:40,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 180 transitions. [2021-12-19 17:18:40,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:40,076 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 180 transitions. [2021-12-19 17:18:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 180 transitions. [2021-12-19 17:18:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2021-12-19 17:18:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 76 states have internal predecessors, (117), 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) [2021-12-19 17:18:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2021-12-19 17:18:40,080 INFO L704 BuchiCegarLoop]: Abstraction has 77 states and 117 transitions. [2021-12-19 17:18:40,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:18:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:18:40,080 INFO L87 Difference]: Start difference. First operand 77 states and 117 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:40,085 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2021-12-19 17:18:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:18:40,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 79 transitions. [2021-12-19 17:18:40,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-19 17:18:40,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 51 states and 68 transitions. [2021-12-19 17:18:40,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-12-19 17:18:40,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-12-19 17:18:40,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 68 transitions. [2021-12-19 17:18:40,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:40,087 INFO L681 BuchiCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-12-19 17:18:40,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 68 transitions. [2021-12-19 17:18:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-12-19 17:18:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 47 states have internal predecessors, (65), 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) [2021-12-19 17:18:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2021-12-19 17:18:40,089 INFO L704 BuchiCegarLoop]: Abstraction has 48 states and 65 transitions. [2021-12-19 17:18:40,089 INFO L587 BuchiCegarLoop]: Abstraction has 48 states and 65 transitions. [2021-12-19 17:18:40,089 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 17:18:40,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 65 transitions. [2021-12-19 17:18:40,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-12-19 17:18:40,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:40,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:40,089 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:18:40,090 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:40,090 INFO L791 eck$LassoCheckResult]: Stem: 1665#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1666#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1674#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1694#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1684#L12-2 assume !(0 == main_~i~0#1); 1672#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1673#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1692#L12 assume !(10 == main_~i~0#1); 1691#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1661#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1687#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1685#L12 [2021-12-19 17:18:40,090 INFO L793 eck$LassoCheckResult]: Loop: 1685#L12 assume !(10 == main_~i~0#1); 1683#L12-2 assume !(0 == main_~i~0#1); 1680#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1681#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1685#L12 [2021-12-19 17:18:40,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2021-12-19 17:18:40,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:40,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798144608] [2021-12-19 17:18:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:40,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:40,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798144608] [2021-12-19 17:18:40,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798144608] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 17:18:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476605971] [2021-12-19 17:18:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:40,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:18:40,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,106 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 17:18:40,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-19 17:18:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:40,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 17:18:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:40,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476605971] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 17:18:40,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 17:18:40,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-19 17:18:40,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121301745] [2021-12-19 17:18:40,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 17:18:40,160 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:18:40,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2021-12-19 17:18:40,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:40,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907833535] [2021-12-19 17:18:40,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:40,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:40,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:40,163 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:40,165 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:40,190 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:40,190 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:40,190 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:40,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:40,191 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:40,191 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,191 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:40,191 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:40,191 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-12-19 17:18:40,191 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:40,191 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:40,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,248 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:40,248 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:40,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,250 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2021-12-19 17:18:40,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:40,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:40,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-19 17:18:40,273 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:40,273 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:40,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:40,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,289 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2021-12-19 17:18:40,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-19 17:18:40,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:40,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:40,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:40,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:40,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:40,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,318 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2021-12-19 17:18:40,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-19 17:18:40,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:40,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:40,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:40,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,344 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2021-12-19 17:18:40,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-19 17:18:40,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:40,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:40,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:40,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-12-19 17:18:40,415 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:40,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:40,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:40,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:40,415 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:40,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:40,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:40,415 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2021-12-19 17:18:40,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:40,415 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:40,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,473 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:40,473 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:40,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,474 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2021-12-19 17:18:40,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-19 17:18:40,476 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 [2021-12-19 17:18:40,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:40,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:40,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:40,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:40,503 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:40,503 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:40,513 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:40,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-12-19 17:18:40,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,535 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2021-12-19 17:18:40,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-19 17:18:40,543 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 [2021-12-19 17:18:40,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:40,549 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:40,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:40,549 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:18:40,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:40,550 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:18:40,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:40,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:40,573 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:40,573 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:18:40,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,575 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2021-12-19 17:18:40,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-19 17:18:40,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:40,577 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:40,578 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:40,578 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2021-12-19 17:18:40,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:40,593 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:40,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:40,649 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 [2021-12-19 17:18:40,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 66 states and 90 transitions. Complement of second has 7 states. [2021-12-19 17:18:40,672 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 [2021-12-19 17:18:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-19 17:18:40,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-19 17:18:40,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,672 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:40,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:40,748 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:18:40,748 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,767 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 66 states and 90 transitions. Complement of second has 7 states. [2021-12-19 17:18:40,767 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 [2021-12-19 17:18:40,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-19 17:18:40,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-19 17:18:40,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,769 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:40,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:40,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:40,816 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:18:40,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,844 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 86 states and 124 transitions. Complement of second has 6 states. [2021-12-19 17:18:40,844 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 [2021-12-19 17:18:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-19 17:18:40,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-19 17:18:40,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2021-12-19 17:18:40,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2021-12-19 17:18:40,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:40,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 124 transitions. [2021-12-19 17:18:40,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2021-12-19 17:18:40,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 56 states and 76 transitions. [2021-12-19 17:18:40,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-19 17:18:40,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-19 17:18:40,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 76 transitions. [2021-12-19 17:18:40,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:40,848 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 76 transitions. [2021-12-19 17:18:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 76 transitions. [2021-12-19 17:18:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2021-12-19 17:18:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 41 states have internal predecessors, (57), 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) [2021-12-19 17:18:40,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2021-12-19 17:18:40,849 INFO L704 BuchiCegarLoop]: Abstraction has 42 states and 57 transitions. [2021-12-19 17:18:40,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:40,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 17:18:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-19 17:18:40,850 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-12-19 17:18:40,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:40,869 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2021-12-19 17:18:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 17:18:40,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 105 transitions. [2021-12-19 17:18:40,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2021-12-19 17:18:40,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 72 states and 93 transitions. [2021-12-19 17:18:40,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-19 17:18:40,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-12-19 17:18:40,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 93 transitions. [2021-12-19 17:18:40,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:40,871 INFO L681 BuchiCegarLoop]: Abstraction has 72 states and 93 transitions. [2021-12-19 17:18:40,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 93 transitions. [2021-12-19 17:18:40,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2021-12-19 17:18:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 65 states have internal predecessors, (85), 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) [2021-12-19 17:18:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2021-12-19 17:18:40,872 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 85 transitions. [2021-12-19 17:18:40,873 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 85 transitions. [2021-12-19 17:18:40,873 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 17:18:40,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 85 transitions. [2021-12-19 17:18:40,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-12-19 17:18:40,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:40,873 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:40,874 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:18:40,874 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:40,874 INFO L791 eck$LassoCheckResult]: Stem: 2294#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2295#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2303#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2308#L12 assume !(10 == main_~i~0#1); 2290#L12-2 assume !(0 == main_~i~0#1); 2291#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2322#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2304#L12 assume !(10 == main_~i~0#1); 2292#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2293#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2332#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2320#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2319#L12-2 [2021-12-19 17:18:40,874 INFO L793 eck$LassoCheckResult]: Loop: 2319#L12-2 assume !(0 == main_~i~0#1); 2355#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2354#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2318#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2319#L12-2 [2021-12-19 17:18:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2021-12-19 17:18:40,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:40,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109099632] [2021-12-19 17:18:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:40,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 17:18:40,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:40,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109099632] [2021-12-19 17:18:40,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109099632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:40,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:40,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 17:18:40,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112923346] [2021-12-19 17:18:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:40,894 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:18:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:40,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2021-12-19 17:18:40,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:40,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158050201] [2021-12-19 17:18:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:40,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:40,897 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:40,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:40,918 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:40,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:40,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:40,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:40,919 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:40,919 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,919 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:40,919 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:40,919 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-12-19 17:18:40,919 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:40,919 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:40,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:40,963 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:40,964 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:40,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:40,965 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2021-12-19 17:18:40,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-19 17:18:40,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:40,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:40,995 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:40,995 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:41,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-19 17:18:41,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,011 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2021-12-19 17:18:41,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-19 17:18:41,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:41,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:41,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:41,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:41,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-19 17:18:41,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,039 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2021-12-19 17:18:41,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-19 17:18:41,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:41,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:41,052 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:41,052 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:41,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-12-19 17:18:41,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,075 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2021-12-19 17:18:41,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-19 17:18:41,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:41,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:41,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:41,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,099 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2021-12-19 17:18:41,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-19 17:18:41,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:41,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:41,208 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:41,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:41,211 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:41,211 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:41,211 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:41,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:41,211 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:41,211 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,211 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:41,211 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:41,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2021-12-19 17:18:41,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:41,211 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:41,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,254 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:41,254 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:41,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,256 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2021-12-19 17:18:41,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-19 17:18:41,257 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 [2021-12-19 17:18:41,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:41,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:41,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:41,263 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:18:41,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:41,264 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:18:41,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:41,266 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:41,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-19 17:18:41,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,282 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2021-12-19 17:18:41,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-19 17:18:41,283 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 [2021-12-19 17:18:41,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:41,289 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:41,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:41,289 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:41,290 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:41,290 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:41,292 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:41,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:41,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,308 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2021-12-19 17:18:41,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-19 17:18:41,310 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 [2021-12-19 17:18:41,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:41,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:41,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:41,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:41,321 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:41,321 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:41,327 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:41,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-19 17:18:41,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,343 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2021-12-19 17:18:41,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-19 17:18:41,344 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 [2021-12-19 17:18:41,351 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:41,351 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:41,351 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:41,352 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:41,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:41,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:41,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:41,359 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:41,361 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:41,361 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:18:41,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,362 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2021-12-19 17:18:41,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-19 17:18:41,364 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:41,364 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:41,364 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:41,364 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 [] [2021-12-19 17:18:41,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-12-19 17:18:41,381 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:41,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:41,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:41,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:41,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:41,423 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 [2021-12-19 17:18:41,423 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23 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) [2021-12-19 17:18:41,437 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23. 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 160 states and 209 transitions. Complement of second has 7 states. [2021-12-19 17:18:41,438 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 [2021-12-19 17:18:41,438 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) [2021-12-19 17:18:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-19 17:18:41,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-19 17:18:41,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:41,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-19 17:18:41,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:41,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-19 17:18:41,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:41,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 209 transitions. [2021-12-19 17:18:41,440 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-12-19 17:18:41,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 126 states and 161 transitions. [2021-12-19 17:18:41,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-12-19 17:18:41,440 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-12-19 17:18:41,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 161 transitions. [2021-12-19 17:18:41,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:41,441 INFO L681 BuchiCegarLoop]: Abstraction has 126 states and 161 transitions. [2021-12-19 17:18:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 161 transitions. [2021-12-19 17:18:41,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2021-12-19 17:18:41,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 119 states have internal predecessors, (155), 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) [2021-12-19 17:18:41,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-12-19 17:18:41,443 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-12-19 17:18:41,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 17:18:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 17:18:41,443 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:41,461 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2021-12-19 17:18:41,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 17:18:41,462 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 174 transitions. [2021-12-19 17:18:41,463 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-12-19 17:18:41,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 138 states and 174 transitions. [2021-12-19 17:18:41,464 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-12-19 17:18:41,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-12-19 17:18:41,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 138 states and 174 transitions. [2021-12-19 17:18:41,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:41,464 INFO L681 BuchiCegarLoop]: Abstraction has 138 states and 174 transitions. [2021-12-19 17:18:41,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states and 174 transitions. [2021-12-19 17:18:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2021-12-19 17:18:41,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 116 states have internal predecessors, (147), 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) [2021-12-19 17:18:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2021-12-19 17:18:41,466 INFO L704 BuchiCegarLoop]: Abstraction has 117 states and 147 transitions. [2021-12-19 17:18:41,466 INFO L587 BuchiCegarLoop]: Abstraction has 117 states and 147 transitions. [2021-12-19 17:18:41,466 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-19 17:18:41,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 147 transitions. [2021-12-19 17:18:41,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-12-19 17:18:41,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:41,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:41,468 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2021-12-19 17:18:41,468 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:18:41,468 INFO L791 eck$LassoCheckResult]: Stem: 2854#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2855#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2859#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2867#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2846#L12-2 assume !(0 == main_~i~0#1); 2847#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2961#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2862#L12 assume !(10 == main_~i~0#1); 2848#L12-2 assume !(0 == main_~i~0#1); 2849#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2858#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2960#L12 assume !(10 == main_~i~0#1); 2959#L12-2 assume !(0 == main_~i~0#1); 2958#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2956#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2955#L12 assume !(10 == main_~i~0#1); 2954#L12-2 assume !(0 == main_~i~0#1); 2952#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2953#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2957#L12 assume !(10 == main_~i~0#1); 2861#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2921#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2919#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2918#L12 assume !(10 == main_~i~0#1); 2896#L12-2 assume !(0 == main_~i~0#1); 2898#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2897#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2895#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2869#L12-2 [2021-12-19 17:18:41,468 INFO L793 eck$LassoCheckResult]: Loop: 2869#L12-2 assume !(0 == main_~i~0#1); 2864#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2865#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2893#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2869#L12-2 [2021-12-19 17:18:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2021-12-19 17:18:41,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:41,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007334395] [2021-12-19 17:18:41,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:41,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 17:18:41,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:41,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007334395] [2021-12-19 17:18:41,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007334395] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 17:18:41,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495689108] [2021-12-19 17:18:41,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 17:18:41,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:18:41,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,510 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 17:18:41,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-12-19 17:18:41,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-19 17:18:41,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 17:18:41,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:41,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-19 17:18:41,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 17:18:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-19 17:18:41,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495689108] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 17:18:41,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 17:18:41,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2021-12-19 17:18:41,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374204683] [2021-12-19 17:18:41,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 17:18:41,613 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-19 17:18:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:41,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2021-12-19 17:18:41,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:41,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740837695] [2021-12-19 17:18:41,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:41,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:41,616 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:41,617 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:41,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:41,644 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:41,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:41,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:41,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:41,645 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:41,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:41,645 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:41,645 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2021-12-19 17:18:41,645 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:41,645 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:41,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,700 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:41,700 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:41,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,701 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2021-12-19 17:18:41,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-19 17:18:41,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:41,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:41,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:41,714 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:41,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-12-19 17:18:41,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,729 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2021-12-19 17:18:41,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-19 17:18:41,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:41,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:41,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-19 17:18:41,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,752 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2021-12-19 17:18:41,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-19 17:18:41,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:41,754 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:41,859 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:41,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-12-19 17:18:41,862 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:41,862 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:41,862 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:41,862 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:41,862 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:41,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:41,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:41,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2021-12-19 17:18:41,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:41,862 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:41,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:41,911 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:41,911 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:41,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,912 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2021-12-19 17:18:41,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-19 17:18:41,914 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 [2021-12-19 17:18:41,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:41,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:41,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:41,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:41,921 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:41,921 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:41,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:41,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-12-19 17:18:41,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,938 INFO L229 MonitoredProcess]: Starting monitored process 62 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) [2021-12-19 17:18:41,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-19 17:18:41,940 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 [2021-12-19 17:18:41,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:41,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:41,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:41,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:41,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:41,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:41,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:41,948 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:41,949 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-19 17:18:41,949 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:18:41,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:41,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:41,950 INFO L229 MonitoredProcess]: Starting monitored process 63 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) [2021-12-19 17:18:41,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-19 17:18:41,951 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:41,951 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:41,951 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:41,951 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 [] [2021-12-19 17:18:41,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-12-19 17:18:41,966 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:41,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:41,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:41,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:42,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:42,067 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 [2021-12-19 17:18:42,067 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:42,084 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 164 states and 204 transitions. Complement of second has 7 states. [2021-12-19 17:18:42,084 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 [2021-12-19 17:18:42,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:42,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-19 17:18:42,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2021-12-19 17:18:42,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:42,085 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:42,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:42,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:42,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:42,163 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:18:42,163 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:42,193 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 198 states and 239 transitions. Complement of second has 7 states. [2021-12-19 17:18:42,193 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 [2021-12-19 17:18:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:42,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-19 17:18:42,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2021-12-19 17:18:42,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:42,194 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:42,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:18:42,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:18:42,284 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-19 17:18:42,284 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:42,299 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 176 states and 219 transitions. Complement of second has 8 states. [2021-12-19 17:18:42,299 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 [2021-12-19 17:18:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:18:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-19 17:18:42,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2021-12-19 17:18:42,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:42,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2021-12-19 17:18:42,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:42,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2021-12-19 17:18:42,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:42,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 176 states and 219 transitions. [2021-12-19 17:18:42,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2021-12-19 17:18:42,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 176 states to 121 states and 151 transitions. [2021-12-19 17:18:42,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-19 17:18:42,302 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-19 17:18:42,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 151 transitions. [2021-12-19 17:18:42,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:42,302 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 151 transitions. [2021-12-19 17:18:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 151 transitions. [2021-12-19 17:18:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2021-12-19 17:18:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.25) internal successors, (95), 75 states have internal predecessors, (95), 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) [2021-12-19 17:18:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2021-12-19 17:18:42,303 INFO L704 BuchiCegarLoop]: Abstraction has 76 states and 95 transitions. [2021-12-19 17:18:42,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:42,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-19 17:18:42,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-19 17:18:42,304 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 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) [2021-12-19 17:18:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:42,362 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2021-12-19 17:18:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-19 17:18:42,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 194 transitions. [2021-12-19 17:18:42,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2021-12-19 17:18:42,363 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 153 states and 188 transitions. [2021-12-19 17:18:42,363 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-19 17:18:42,363 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-19 17:18:42,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 188 transitions. [2021-12-19 17:18:42,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:42,364 INFO L681 BuchiCegarLoop]: Abstraction has 153 states and 188 transitions. [2021-12-19 17:18:42,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states and 188 transitions. [2021-12-19 17:18:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 104. [2021-12-19 17:18:42,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 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) [2021-12-19 17:18:42,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-12-19 17:18:42,365 INFO L704 BuchiCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-12-19 17:18:42,365 INFO L587 BuchiCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-12-19 17:18:42,365 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-19 17:18:42,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 126 transitions. [2021-12-19 17:18:42,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-12-19 17:18:42,366 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:42,366 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:42,366 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-19 17:18:42,366 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2021-12-19 17:18:42,366 INFO L791 eck$LassoCheckResult]: Stem: 4245#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4246#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4240#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 assume !(10 == main_~i~0#1); 4265#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4263#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4255#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4256#L12 [2021-12-19 17:18:42,366 INFO L793 eck$LassoCheckResult]: Loop: 4256#L12 assume !(10 == main_~i~0#1); 4284#L12-2 assume !(0 == main_~i~0#1); 4283#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4282#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4281#L12 assume !(10 == main_~i~0#1); 4280#L12-2 assume !(0 == main_~i~0#1); 4279#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4278#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4277#L12 assume !(10 == main_~i~0#1); 4276#L12-2 assume !(0 == main_~i~0#1); 4275#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4274#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4273#L12 assume !(10 == main_~i~0#1); 4272#L12-2 assume !(0 == main_~i~0#1); 4271#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4270#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4269#L12 assume !(10 == main_~i~0#1); 4259#L12-2 assume !(0 == main_~i~0#1); 4262#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4261#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4258#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4260#L12-2 assume !(0 == main_~i~0#1); 4324#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4323#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4322#L12 assume !(10 == main_~i~0#1); 4321#L12-2 assume !(0 == main_~i~0#1); 4320#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4319#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4318#L12 assume !(10 == main_~i~0#1); 4317#L12-2 assume !(0 == main_~i~0#1); 4316#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4315#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4314#L12 assume !(10 == main_~i~0#1); 4313#L12-2 assume !(0 == main_~i~0#1); 4312#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4311#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4309#L12 assume !(10 == main_~i~0#1); 4308#L12-2 assume !(0 == main_~i~0#1); 4306#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4307#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 assume !(10 == main_~i~0#1); 4265#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4263#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4255#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4256#L12 [2021-12-19 17:18:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 2 times [2021-12-19 17:18:42,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:42,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746380758] [2021-12-19 17:18:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:42,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:42,369 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:42,371 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:42,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1466490324, now seen corresponding path program 1 times [2021-12-19 17:18:42,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:42,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896717229] [2021-12-19 17:18:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:42,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-19 17:18:42,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896717229] [2021-12-19 17:18:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896717229] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 17:18:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012735409] [2021-12-19 17:18:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:42,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:18:42,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:42,429 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 17:18:42,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-12-19 17:18:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 17:18:42,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,501 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-19 17:18:42,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 17:18:42,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-19 17:18:42,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012735409] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 17:18:42,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 17:18:42,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-12-19 17:18:42,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474373360] [2021-12-19 17:18:42,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 17:18:42,598 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:18:42,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:42,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-19 17:18:42,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 17:18:42,598 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. cyclomatic complexity: 26 Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 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) [2021-12-19 17:18:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:42,644 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2021-12-19 17:18:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 17:18:42,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 198 states and 243 transitions. [2021-12-19 17:18:42,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 72 [2021-12-19 17:18:42,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 198 states to 173 states and 213 transitions. [2021-12-19 17:18:42,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-12-19 17:18:42,646 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-19 17:18:42,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 213 transitions. [2021-12-19 17:18:42,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:42,646 INFO L681 BuchiCegarLoop]: Abstraction has 173 states and 213 transitions. [2021-12-19 17:18:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 213 transitions. [2021-12-19 17:18:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2021-12-19 17:18:42,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 164 states have (on average 1.225609756097561) internal successors, (201), 163 states have internal predecessors, (201), 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) [2021-12-19 17:18:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2021-12-19 17:18:42,648 INFO L704 BuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-12-19 17:18:42,648 INFO L587 BuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2021-12-19 17:18:42,648 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-19 17:18:42,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 201 transitions. [2021-12-19 17:18:42,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2021-12-19 17:18:42,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:42,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:42,649 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-19 17:18:42,649 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-12-19 17:18:42,650 INFO L791 eck$LassoCheckResult]: Stem: 4815#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4816#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4817#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4819#L12 assume !(10 == main_~i~0#1); 4859#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4858#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4829#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4830#L12 [2021-12-19 17:18:42,650 INFO L793 eck$LassoCheckResult]: Loop: 4830#L12 assume !(10 == main_~i~0#1); 4851#L12-2 assume !(0 == main_~i~0#1); 4850#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4849#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4848#L12 assume !(10 == main_~i~0#1); 4847#L12-2 assume !(0 == main_~i~0#1); 4846#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4845#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4844#L12 assume !(10 == main_~i~0#1); 4843#L12-2 assume !(0 == main_~i~0#1); 4842#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4841#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4840#L12 assume !(10 == main_~i~0#1); 4839#L12-2 assume !(0 == main_~i~0#1); 4838#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4837#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4836#L12 assume !(10 == main_~i~0#1); 4833#L12-2 assume !(0 == main_~i~0#1); 4835#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4834#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4832#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4812#L12-2 assume !(0 == main_~i~0#1); 4813#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4820#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4821#L12 assume !(10 == main_~i~0#1); 4826#L12-2 assume !(0 == main_~i~0#1); 4975#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4974#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4973#L12 assume !(10 == main_~i~0#1); 4972#L12-2 assume !(0 == main_~i~0#1); 4971#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4970#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4969#L12 assume !(10 == main_~i~0#1); 4968#L12-2 assume !(0 == main_~i~0#1); 4967#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4966#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4965#L12 assume !(10 == main_~i~0#1); 4964#L12-2 assume !(0 == main_~i~0#1); 4963#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4962#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4961#L12 assume !(10 == main_~i~0#1); 4960#L12-2 assume !(0 == main_~i~0#1); 4959#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4958#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4957#L12 assume !(10 == main_~i~0#1); 4956#L12-2 assume !(0 == main_~i~0#1); 4955#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4954#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4953#L12 assume !(10 == main_~i~0#1); 4952#L12-2 assume !(0 == main_~i~0#1); 4951#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4950#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4949#L12 assume !(10 == main_~i~0#1); 4948#L12-2 assume !(0 == main_~i~0#1); 4947#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4946#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4866#L12 assume !(10 == main_~i~0#1); 4945#L12-2 assume !(0 == main_~i~0#1); 4910#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4865#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4819#L12 assume !(10 == main_~i~0#1); 4859#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4858#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4829#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4830#L12 [2021-12-19 17:18:42,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:42,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 3 times [2021-12-19 17:18:42,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:42,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197442878] [2021-12-19 17:18:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:42,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:42,652 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:42,654 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash 726843037, now seen corresponding path program 2 times [2021-12-19 17:18:42,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:42,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525301377] [2021-12-19 17:18:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:42,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:42,662 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:42,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1110135673, now seen corresponding path program 4 times [2021-12-19 17:18:42,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:42,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749062210] [2021-12-19 17:18:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:42,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:42,718 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-19 17:18:42,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749062210] [2021-12-19 17:18:42,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749062210] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 17:18:42,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076370515] [2021-12-19 17:18:42,719 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 17:18:42,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 17:18:42,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:42,720 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 17:18:42,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-12-19 17:18:42,747 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 17:18:42,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 17:18:42,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-19 17:18:42,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-19 17:18:42,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 17:18:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-19 17:18:42,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076370515] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 17:18:42,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 17:18:42,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-12-19 17:18:42,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530502283] [2021-12-19 17:18:42,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 17:18:43,220 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:43,221 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:43,221 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:43,221 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:43,221 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:18:43,221 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:43,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:43,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-12-19 17:18:43,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:43,221 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:43,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,255 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:43,255 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:18:43,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,256 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2021-12-19 17:18:43,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-12-19 17:18:43,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:43,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:43,265 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:43,265 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:43,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-12-19 17:18:43,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,280 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2021-12-19 17:18:43,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-12-19 17:18:43,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:43,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:43,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:18:43,293 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:18:43,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:43,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,309 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2021-12-19 17:18:43,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-12-19 17:18:43,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:18:43,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:43,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-12-19 17:18:43,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,338 INFO L229 MonitoredProcess]: Starting monitored process 69 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) [2021-12-19 17:18:43,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-19 17:18:43,339 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:18:43,340 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:18:43,347 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:18:43,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:43,361 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:18:43,361 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:18:43,361 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:18:43,361 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:18:43,361 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:18:43,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:18:43,362 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:18:43,362 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2021-12-19 17:18:43,362 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:18:43,362 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:18:43,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:18:43,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:18:43,395 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:18:43,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,396 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2021-12-19 17:18:43,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-12-19 17:18:43,398 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 [2021-12-19 17:18:43,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:43,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:43,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:43,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:43,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:43,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:43,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:43,405 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:43,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:43,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,421 INFO L229 MonitoredProcess]: Starting monitored process 71 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) [2021-12-19 17:18:43,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-12-19 17:18:43,423 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 [2021-12-19 17:18:43,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:43,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:43,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:43,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:43,429 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:18:43,429 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:18:43,437 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:18:43,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-12-19 17:18:43,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,453 INFO L229 MonitoredProcess]: Starting monitored process 72 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) [2021-12-19 17:18:43,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-12-19 17:18:43,454 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 [2021-12-19 17:18:43,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:18:43,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:18:43,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:18:43,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:18:43,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:18:43,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:18:43,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:18:43,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:18:43,485 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:18:43,485 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:18:43,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:18:43,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:18:43,486 INFO L229 MonitoredProcess]: Starting monitored process 73 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) [2021-12-19 17:18:43,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-12-19 17:18:43,488 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:18:43,488 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:18:43,488 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:18:43,488 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 [] [2021-12-19 17:18:43,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:43,503 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:18:43,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:43,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:43,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:43,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-19 17:18:43,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-19 17:18:43,684 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-19 17:18:43,684 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:43,760 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 489 states and 580 transitions. Complement of second has 17 states. [2021-12-19 17:18:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:43,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2021-12-19 17:18:43,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-19 17:18:43,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:43,761 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:43,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:43,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:43,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-19 17:18:43,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:43,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-19 17:18:43,945 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-19 17:18:43,945 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:44,134 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 784 states and 937 transitions. Complement of second has 31 states. [2021-12-19 17:18:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:44,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 67 transitions. [2021-12-19 17:18:44,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 67 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-19 17:18:44,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:44,135 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:44,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:44,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:44,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-19 17:18:44,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-19 17:18:44,308 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 9 loop predicates [2021-12-19 17:18:44,308 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:44,470 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 1329 states and 1557 transitions. Complement of second has 174 states. [2021-12-19 17:18:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:44,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 76 transitions. [2021-12-19 17:18:44,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 76 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-19 17:18:44,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:44,472 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:18:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:44,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:18:44,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:44,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-19 17:18:44,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:18:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-19 17:18:44,662 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2021-12-19 17:18:44,662 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:44,833 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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 1639 states and 1887 transitions. Complement of second has 195 states. [2021-12-19 17:18:44,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2021-12-19 17:18:44,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2021-12-19 17:18:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 78 transitions. [2021-12-19 17:18:44,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 64 letters. [2021-12-19 17:18:44,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:44,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 71 letters. Loop has 64 letters. [2021-12-19 17:18:44,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:44,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 128 letters. [2021-12-19 17:18:44,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:18:44,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1639 states and 1887 transitions. [2021-12-19 17:18:44,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 307 [2021-12-19 17:18:44,844 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1639 states to 522 states and 614 transitions. [2021-12-19 17:18:44,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-19 17:18:44,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-12-19 17:18:44,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 614 transitions. [2021-12-19 17:18:44,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:44,844 INFO L681 BuchiCegarLoop]: Abstraction has 522 states and 614 transitions. [2021-12-19 17:18:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 614 transitions. [2021-12-19 17:18:44,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 163. [2021-12-19 17:18:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 162 states have internal predecessors, (197), 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) [2021-12-19 17:18:44,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-12-19 17:18:44,847 INFO L704 BuchiCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-12-19 17:18:44,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-19 17:18:44,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-19 17:18:44,847 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2021-12-19 17:18:44,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:44,881 INFO L93 Difference]: Finished difference Result 398 states and 454 transitions. [2021-12-19 17:18:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-19 17:18:44,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 454 transitions. [2021-12-19 17:18:44,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 195 [2021-12-19 17:18:44,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 298 states and 353 transitions. [2021-12-19 17:18:44,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2021-12-19 17:18:44,888 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2021-12-19 17:18:44,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 298 states and 353 transitions. [2021-12-19 17:18:44,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:44,888 INFO L681 BuchiCegarLoop]: Abstraction has 298 states and 353 transitions. [2021-12-19 17:18:44,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states and 353 transitions. [2021-12-19 17:18:44,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 152. [2021-12-19 17:18:44,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 151 states have internal predecessors, (183), 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) [2021-12-19 17:18:44,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2021-12-19 17:18:44,890 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 183 transitions. [2021-12-19 17:18:44,890 INFO L587 BuchiCegarLoop]: Abstraction has 152 states and 183 transitions. [2021-12-19 17:18:44,890 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-19 17:18:44,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 183 transitions. [2021-12-19 17:18:44,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2021-12-19 17:18:44,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:44,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:44,891 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-12-19 17:18:44,891 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [21, 20, 19, 11, 10, 2, 1] [2021-12-19 17:18:44,891 INFO L791 eck$LassoCheckResult]: Stem: 11594#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11595#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, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11599#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11609#L12 assume !(10 == main_~i~0#1); 11612#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11610#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11603#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11604#L12 [2021-12-19 17:18:44,891 INFO L793 eck$LassoCheckResult]: Loop: 11604#L12 assume !(10 == main_~i~0#1); 11692#L12-2 assume !(0 == main_~i~0#1); 11691#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11690#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11689#L12 assume !(10 == main_~i~0#1); 11688#L12-2 assume !(0 == main_~i~0#1); 11687#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11686#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11685#L12 assume !(10 == main_~i~0#1); 11684#L12-2 assume !(0 == main_~i~0#1); 11683#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11682#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11681#L12 assume !(10 == main_~i~0#1); 11678#L12-2 assume !(0 == main_~i~0#1); 11680#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11679#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11677#L12 assume !(10 == main_~i~0#1); 11586#L12-2 assume !(0 == main_~i~0#1); 11587#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11590#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11591#L12 assume !(10 == main_~i~0#1); 11676#L12-2 assume !(0 == main_~i~0#1); 11675#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11674#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11673#L12 assume !(10 == main_~i~0#1); 11672#L12-2 assume !(0 == main_~i~0#1); 11671#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11670#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11669#L12 assume !(10 == main_~i~0#1); 11668#L12-2 assume !(0 == main_~i~0#1); 11667#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11666#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11665#L12 assume !(10 == main_~i~0#1); 11664#L12-2 assume !(0 == main_~i~0#1); 11663#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11662#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11661#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11660#L12-2 assume !(0 == main_~i~0#1); 11659#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11658#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11657#L12 assume !(10 == main_~i~0#1); 11656#L12-2 assume !(0 == main_~i~0#1); 11655#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11654#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11653#L12 assume !(10 == main_~i~0#1); 11652#L12-2 assume !(0 == main_~i~0#1); 11651#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11650#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11649#L12 assume !(10 == main_~i~0#1); 11648#L12-2 assume !(0 == main_~i~0#1); 11647#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11646#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11645#L12 assume !(10 == main_~i~0#1); 11644#L12-2 assume !(0 == main_~i~0#1); 11643#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11642#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11641#L12 assume !(10 == main_~i~0#1); 11640#L12-2 assume !(0 == main_~i~0#1); 11639#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11638#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11637#L12 assume !(10 == main_~i~0#1); 11636#L12-2 assume !(0 == main_~i~0#1); 11635#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11634#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11633#L12 assume !(10 == main_~i~0#1); 11632#L12-2 assume !(0 == main_~i~0#1); 11631#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11630#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11629#L12 assume !(10 == main_~i~0#1); 11628#L12-2 assume !(0 == main_~i~0#1); 11627#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11626#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11622#L12 assume !(10 == main_~i~0#1); 11624#L12-2 assume !(0 == main_~i~0#1); 11623#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11621#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11620#L12 assume !(10 == main_~i~0#1); 11618#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11619#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11694#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11605#L12 assume !(10 == main_~i~0#1); 11615#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11610#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11603#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11604#L12 [2021-12-19 17:18:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 4 times [2021-12-19 17:18:44,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556619355] [2021-12-19 17:18:44,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,894 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,895 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:44,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1840948782, now seen corresponding path program 3 times [2021-12-19 17:18:44,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099967400] [2021-12-19 17:18:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:18:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2021-12-19 17:18:44,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:18:44,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099967400] [2021-12-19 17:18:44,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099967400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:18:44,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:18:44,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 17:18:44,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431102405] [2021-12-19 17:18:44,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:18:44,931 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:18:44,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:18:44,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 17:18:44,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-19 17:18:44,932 INFO L87 Difference]: Start difference. First operand 152 states and 183 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-12-19 17:18:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:18:44,941 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2021-12-19 17:18:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 17:18:44,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 181 transitions. [2021-12-19 17:18:44,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-19 17:18:44,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 144 states and 170 transitions. [2021-12-19 17:18:44,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-12-19 17:18:44,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-12-19 17:18:44,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 170 transitions. [2021-12-19 17:18:44,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:18:44,943 INFO L681 BuchiCegarLoop]: Abstraction has 144 states and 170 transitions. [2021-12-19 17:18:44,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 170 transitions. [2021-12-19 17:18:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2021-12-19 17:18:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 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) [2021-12-19 17:18:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2021-12-19 17:18:44,951 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2021-12-19 17:18:44,951 INFO L587 BuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2021-12-19 17:18:44,951 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-19 17:18:44,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 117 transitions. [2021-12-19 17:18:44,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-19 17:18:44,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:18:44,951 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:18:44,952 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 5, 4, 1, 1, 1] [2021-12-19 17:18:44,952 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-19 17:18:44,952 INFO L791 eck$LassoCheckResult]: Stem: 11904#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11905#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11917#L12 assume !(10 == main_~i~0#1); 11918#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11919#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11900#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11901#L12 assume !(10 == main_~i~0#1); 11953#L12-2 assume !(0 == main_~i~0#1); 11952#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11951#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11950#L12 assume !(10 == main_~i~0#1); 11949#L12-2 assume !(0 == main_~i~0#1); 11948#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11947#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11946#L12 assume !(10 == main_~i~0#1); 11945#L12-2 assume !(0 == main_~i~0#1); 11944#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11943#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11942#L12 assume !(10 == main_~i~0#1); 11938#L12-2 assume !(0 == main_~i~0#1); 11941#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11940#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11937#L12 assume !(10 == main_~i~0#1); 11920#L12-2 [2021-12-19 17:18:44,952 INFO L793 eck$LassoCheckResult]: Loop: 11920#L12-2 assume !(0 == main_~i~0#1); 11913#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11914#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11939#L12 assume !(10 == main_~i~0#1); 11936#L12-2 assume !(0 == main_~i~0#1); 11935#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11934#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11933#L12 assume !(10 == main_~i~0#1); 11932#L12-2 assume !(0 == main_~i~0#1); 11931#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11930#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11929#L12 assume !(10 == main_~i~0#1); 11928#L12-2 assume !(0 == main_~i~0#1); 11927#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11926#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11925#L12 assume !(10 == main_~i~0#1); 11924#L12-2 assume !(0 == main_~i~0#1); 11923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11922#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11921#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11897#L12-2 assume !(0 == main_~i~0#1); 11898#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11902#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11903#L12 assume !(10 == main_~i~0#1); 11995#L12-2 assume !(0 == main_~i~0#1); 11994#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11993#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11992#L12 assume !(10 == main_~i~0#1); 11991#L12-2 assume !(0 == main_~i~0#1); 11990#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11989#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11988#L12 assume !(10 == main_~i~0#1); 11987#L12-2 assume !(0 == main_~i~0#1); 11986#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11985#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11984#L12 assume !(10 == main_~i~0#1); 11983#L12-2 assume !(0 == main_~i~0#1); 11982#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11981#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11980#L12 assume !(10 == main_~i~0#1); 11979#L12-2 assume !(0 == main_~i~0#1); 11978#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11977#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11976#L12 assume !(10 == main_~i~0#1); 11975#L12-2 assume !(0 == main_~i~0#1); 11974#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11973#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11972#L12 assume !(10 == main_~i~0#1); 11971#L12-2 assume !(0 == main_~i~0#1); 11970#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11969#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11968#L12 assume !(10 == main_~i~0#1); 11967#L12-2 assume !(0 == main_~i~0#1); 11966#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11965#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11962#L12 assume !(10 == main_~i~0#1); 11964#L12-2 assume !(0 == main_~i~0#1); 11963#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11961#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11960#L12 assume !(10 == main_~i~0#1); 11910#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11959#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11956#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11954#L12 assume !(10 == main_~i~0#1); 11953#L12-2 assume !(0 == main_~i~0#1); 11952#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11951#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11950#L12 assume !(10 == main_~i~0#1); 11949#L12-2 assume !(0 == main_~i~0#1); 11948#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11947#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11946#L12 assume !(10 == main_~i~0#1); 11945#L12-2 assume !(0 == main_~i~0#1); 11944#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11943#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11942#L12 assume !(10 == main_~i~0#1); 11938#L12-2 assume !(0 == main_~i~0#1); 11941#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11940#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11937#L12 assume !(10 == main_~i~0#1); 11920#L12-2 [2021-12-19 17:18:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 781927031, now seen corresponding path program 1 times [2021-12-19 17:18:44,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361917027] [2021-12-19 17:18:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,955 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:44,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,958 INFO L85 PathProgramCache]: Analyzing trace with hash 921517193, now seen corresponding path program 4 times [2021-12-19 17:18:44,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724157832] [2021-12-19 17:18:44,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,968 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,974 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:44,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:18:44,974 INFO L85 PathProgramCache]: Analyzing trace with hash 933372671, now seen corresponding path program 5 times [2021-12-19 17:18:44,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:18:44,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024840895] [2021-12-19 17:18:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:18:44,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:18:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,981 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:18:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:18:44,988 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:18:45,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:18:45 BoogieIcfgContainer [2021-12-19 17:18:45,404 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:18:45,405 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:18:45,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:18:45,405 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:18:45,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:18:36" (3/4) ... [2021-12-19 17:18:45,407 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 17:18:45,436 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 17:18:45,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:18:45,436 INFO L158 Benchmark]: Toolchain (without parser) took 8993.29ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 68.6MB in the beginning and 82.3MB in the end (delta: -13.6MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2021-12-19 17:18:45,436 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:18:45,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.79ms. Allocated memory is still 96.5MB. Free memory was 68.5MB in the beginning and 74.9MB in the end (delta: -6.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-19 17:18:45,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.49ms. Allocated memory is still 96.5MB. Free memory was 74.9MB in the beginning and 73.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:18:45,437 INFO L158 Benchmark]: Boogie Preprocessor took 9.50ms. Allocated memory is still 96.5MB. Free memory was 73.8MB in the beginning and 72.8MB in the end (delta: 965.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:18:45,437 INFO L158 Benchmark]: RCFGBuilder took 169.71ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 64.9MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-19 17:18:45,437 INFO L158 Benchmark]: BuchiAutomizer took 8629.45ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 64.4MB in the beginning and 85.4MB in the end (delta: -20.9MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. [2021-12-19 17:18:45,437 INFO L158 Benchmark]: Witness Printer took 31.05ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 82.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:18:45,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 79.7MB. Free memory is still 36.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132.79ms. Allocated memory is still 96.5MB. Free memory was 68.5MB in the beginning and 74.9MB in the end (delta: -6.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.49ms. Allocated memory is still 96.5MB. Free memory was 74.9MB in the beginning and 73.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 9.50ms. Allocated memory is still 96.5MB. Free memory was 73.8MB in the beginning and 72.8MB in the end (delta: 965.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 169.71ms. Allocated memory is still 96.5MB. Free memory was 72.8MB in the beginning and 64.9MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 8629.45ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 64.4MB in the beginning and 85.4MB in the end (delta: -20.9MB). Peak memory consumption was 74.9MB. Max. memory is 16.1GB. * Witness Printer took 31.05ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 82.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 18 terminating modules (9 trivial, 5 deterministic, 4 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 16 locations. 9 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 101 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.5s and 12 iterations. TraceHistogramMax:21. Analysis of lassos took 5.5s. Construction of modules took 0.4s. Büchi inclusion checks took 2.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 18. Automata minimization 0.1s AutomataMinimizationTime, 18 MinimizatonAttempts, 766 StatesRemovedByMinimization, 18 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 164 states and ocurred in iteration 9. Nontrivial modules had stage [5, 0, 3, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 220/480 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 459 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 441 mSDsluCounter, 235 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 921 IncrementalHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 204 mSDtfsCounter, 921 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax174 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf91 smp95 dnf122 smp94 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: 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=5, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@311b3dce=0, up=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) Loop: [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 17:18:45,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-12-19 17:18:45,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-12-19 17:18:45,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-12-19 17:18:46,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-19 17:18:46,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)