./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 e8d55036 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-?-e8d5503-m [2023-02-15 23:16:20,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:16:20,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:16:20,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:16:20,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:16:20,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:16:20,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:16:20,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:16:20,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:16:20,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:16:20,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:16:20,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:16:20,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:16:20,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:16:20,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:16:20,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:16:20,772 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:16:20,773 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:16:20,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:16:20,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:16:20,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:16:20,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:16:20,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:16:20,784 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:16:20,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:16:20,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:16:20,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:16:20,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:16:20,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:16:20,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:16:20,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:16:20,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:16:20,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:16:20,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:16:20,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:16:20,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:16:20,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:16:20,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:16:20,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:16:20,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:16:20,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:16:20,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 23:16:20,816 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:16:20,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:16:20,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:16:20,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:16:20,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:16:20,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:16:20,818 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:16:20,818 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 23:16:20,818 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 23:16:20,818 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 23:16:20,819 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 23:16:20,819 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 23:16:20,819 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 23:16:20,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:16:20,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:16:20,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:16:20,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:16:20,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 23:16:20,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 23:16:20,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 23:16:20,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:16:20,821 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 23:16:20,821 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:16:20,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 23:16:20,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:16:20,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:16:20,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:16:20,822 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:16:20,823 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 23:16:20,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2023-02-15 23:16:21,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:16:21,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:16:21,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:16:21,080 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:16:21,080 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:16:21,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-02-15 23:16:22,062 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:16:22,197 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:16:22,197 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-02-15 23:16:22,206 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e172e1d87/65ae246aa723404aa4f5dab9cdb5d4e5/FLAG0bf14d447 [2023-02-15 23:16:22,219 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e172e1d87/65ae246aa723404aa4f5dab9cdb5d4e5 [2023-02-15 23:16:22,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:16:22,222 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:16:22,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:16:22,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:16:22,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:16:22,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17f56eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22, skipping insertion in model container [2023-02-15 23:16:22,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:16:22,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:16:22,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:16:22,355 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:16:22,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:16:22,370 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:16:22,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22 WrapperNode [2023-02-15 23:16:22,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:16:22,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:16:22,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:16:22,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:16:22,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,396 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-02-15 23:16:22,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:16:22,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:16:22,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:16:22,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:16:22,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,407 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:16:22,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:16:22,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:16:22,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:16:22,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (1/1) ... [2023-02-15 23:16:22,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:22,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:22,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-02-15 23:16:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:16:22,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:16:22,502 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:16:22,503 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:16:22,546 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:16:22,549 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:16:22,550 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 23:16:22,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:16:22 BoogieIcfgContainer [2023-02-15 23:16:22,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:16:22,552 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 23:16:22,552 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 23:16:22,554 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 23:16:22,555 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:16:22,555 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 11:16:22" (1/3) ... [2023-02-15 23:16:22,555 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@654831c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:16:22, skipping insertion in model container [2023-02-15 23:16:22,555 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:16:22,555 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:16:22" (2/3) ... [2023-02-15 23:16:22,556 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@654831c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:16:22, skipping insertion in model container [2023-02-15 23:16:22,556 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:16:22,556 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:16:22" (3/3) ... [2023-02-15 23:16:22,557 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2023-02-15 23:16:22,602 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 23:16:22,616 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 23:16:22,617 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 23:16:22,617 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 23:16:22,617 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 23:16:22,617 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 23:16:22,617 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 23:16:22,618 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 23:16:22,621 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) [2023-02-15 23:16:22,630 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:16:22,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:22,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:22,649 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:16:22,649 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:22,649 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 23:16:22,649 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) [2023-02-15 23:16:22,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:16:22,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:22,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:22,651 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 23:16:22,651 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:22,656 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4#L18-1true [2023-02-15 23:16:22,667 INFO L750 eck$LassoCheckResult]: Loop: 4#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 10#L12true assume !(10 == main_~i~0#1); 2#L12-2true assume 0 == main_~i~0#1;main_~up~0#1 := 1; 7#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4#L18-1true [2023-02-15 23:16:22,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:22,673 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 23:16:22,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:22,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588056353] [2023-02-15 23:16:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:22,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:22,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:22,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-02-15 23:16:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:22,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684581381] [2023-02-15 23:16:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:22,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:22,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:22,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:22,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-02-15 23:16:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:22,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357247209] [2023-02-15 23:16:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:22,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:22,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:22,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:22,848 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:22,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:22,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:22,849 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:22,849 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:22,850 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:22,850 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:22,850 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:22,850 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-02-15 23:16:22,850 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:22,850 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:22,877 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:22,890 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:22,896 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:22,902 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:22,955 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:22,955 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:22,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:22,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:22,959 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:22,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-15 23:16:22,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:22,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:22,992 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:22,992 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:16:22,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-02-15 23:16:22,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:22,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:22,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:22,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-15 23:16:23,000 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:23,000 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:23,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:23,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:16:23,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-15 23:16:23,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:23,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:23,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,052 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-15 23:16:23,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:23,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:23,075 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:23,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-02-15 23:16:23,078 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:23,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:23,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:23,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:23,079 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:23,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:23,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:23,079 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-02-15 23:16:23,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:23,079 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:23,080 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,084 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,088 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,095 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,138 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:23,141 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:23,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,144 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-15 23:16:23,148 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:23,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:23,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:23,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:23,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:23,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:23,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:23,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:23,172 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:23,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-15 23:16:23,193 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:23,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:23,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:23,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:23,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:23,202 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:23,203 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:23,225 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:23,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-15 23:16:23,235 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:23,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:23,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:23,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:23,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:23,244 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:23,244 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:23,254 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:23,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-15 23:16:23,275 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:23,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:23,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:23,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:23,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:23,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:23,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:23,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:23,284 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:23,286 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:23,287 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:16:23,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-15 23:16:23,291 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:23,292 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:23,292 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:23,292 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 [] [2023-02-15 23:16:23,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,297 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:23,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:23,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:23,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:23,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:23,383 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:23,384 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) [2023-02-15 23:16:23,419 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. [2023-02-15 23:16:23,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-02-15 23:16:23,424 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) [2023-02-15 23:16:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2023-02-15 23:16:23,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2023-02-15 23:16:23,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:23,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2023-02-15 23:16:23,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:23,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2023-02-15 23:16:23,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:23,427 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2023-02-15 23:16:23,429 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-02-15 23:16:23,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2023-02-15 23:16:23,432 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-02-15 23:16:23,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-02-15 23:16:23,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2023-02-15 23:16:23,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:23,433 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2023-02-15 23:16:23,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2023-02-15 23:16:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-02-15 23:16:23,449 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) [2023-02-15 23:16:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2023-02-15 23:16:23,450 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-02-15 23:16:23,450 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-02-15 23:16:23,450 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 23:16:23,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2023-02-15 23:16:23,451 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-02-15 23:16:23,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:23,451 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:23,451 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 23:16:23,451 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:23,452 INFO L748 eck$LassoCheckResult]: Stem: 100#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 101#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; 105#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 97#L12 [2023-02-15 23:16:23,452 INFO L750 eck$LassoCheckResult]: Loop: 97#L12 assume !(10 == main_~i~0#1); 106#L12-2 assume !(0 == main_~i~0#1); 107#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 96#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 97#L12 [2023-02-15 23:16:23,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:23,452 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-15 23:16:23,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:23,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124682563] [2023-02-15 23:16:23,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:23,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:23,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:23,458 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:23,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:23,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2023-02-15 23:16:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:23,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435001201] [2023-02-15 23:16:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:23,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:23,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:23,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:23,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:23,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2023-02-15 23:16:23,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:23,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495771224] [2023-02-15 23:16:23,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:23,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495771224] [2023-02-15 23:16:23,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495771224] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:16:23,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:16:23,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:16:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386339861] [2023-02-15 23:16:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:16:23,529 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:23,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:23,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:23,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:23,530 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:23,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:23,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:23,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-02-15 23:16:23,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:23,530 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:23,532 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,534 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,541 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,544 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,605 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:23,605 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:23,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-15 23:16:23,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:23,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:23,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:23,649 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 23:16:23,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-15 23:16:23,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:23,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:23,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,689 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-15 23:16:23,693 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:23,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:23,724 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:23,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,728 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:23,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:23,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:23,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:23,728 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:23,728 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,728 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:23,728 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:23,728 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-02-15 23:16:23,728 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:23,728 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:23,729 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,735 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,742 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,745 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:23,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,825 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:23,825 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:23,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-15 23:16:23,830 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:23,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:23,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:23,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:23,836 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:23,837 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:23,838 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:23,853 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:23,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,858 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) [2023-02-15 23:16:23,860 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 [2023-02-15 23:16:23,861 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:23,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:23,867 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:23,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:23,867 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-15 23:16:23,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:23,869 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-15 23:16:23,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:23,884 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:23,887 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:23,887 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:16:23,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:23,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:23,888 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:23,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-15 23:16:23,892 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:23,892 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:23,892 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:23,892 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 [] [2023-02-15 23:16:23,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:23,898 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:23,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:23,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:23,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:23,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:23,958 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:23,958 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) [2023-02-15 23:16:23,985 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. [2023-02-15 23:16:23,986 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 [2023-02-15 23:16:23,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:16:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-15 23:16:23,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2023-02-15 23:16:23,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:23,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2023-02-15 23:16:23,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:23,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2023-02-15 23:16:23,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:23,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2023-02-15 23:16:23,991 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 23:16:23,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2023-02-15 23:16:23,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-15 23:16:23,993 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-02-15 23:16:23,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2023-02-15 23:16:23,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:23,993 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 35 transitions. [2023-02-15 23:16:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2023-02-15 23:16:23,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-02-15 23:16:23,996 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) [2023-02-15 23:16:23,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2023-02-15 23:16:23,996 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 34 transitions. [2023-02-15 23:16:23,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:16:24,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:16:24,001 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) [2023-02-15 23:16:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:24,017 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2023-02-15 23:16:24,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2023-02-15 23:16:24,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-02-15 23:16:24,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2023-02-15 23:16:24,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-02-15 23:16:24,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-02-15 23:16:24,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2023-02-15 23:16:24,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:24,019 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 46 transitions. [2023-02-15 23:16:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2023-02-15 23:16:24,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-02-15 23:16:24,021 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) [2023-02-15 23:16:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2023-02-15 23:16:24,021 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-02-15 23:16:24,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:16:24,022 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-02-15 23:16:24,022 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-15 23:16:24,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2023-02-15 23:16:24,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-02-15 23:16:24,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:24,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:24,023 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 23:16:24,023 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:24,024 INFO L748 eck$LassoCheckResult]: Stem: 243#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 244#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 252#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 234#L12-2 assume !(0 == main_~i~0#1); 236#L15-1 [2023-02-15 23:16:24,024 INFO L750 eck$LassoCheckResult]: Loop: 236#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 245#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 256#L12 assume !(10 == main_~i~0#1); 254#L12-2 assume !(0 == main_~i~0#1); 236#L15-1 [2023-02-15 23:16:24,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:24,024 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2023-02-15 23:16:24,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:24,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405661750] [2023-02-15 23:16:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:24,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:24,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:24,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2023-02-15 23:16:24,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:24,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709810900] [2023-02-15 23:16:24,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:24,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:24,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:24,036 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2023-02-15 23:16:24,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:24,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819716759] [2023-02-15 23:16:24,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:24,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,040 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:24,066 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:24,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:24,067 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:24,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:24,067 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:24,068 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,068 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:24,068 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:24,068 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-02-15 23:16:24,068 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:24,068 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:24,069 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,076 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,078 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,085 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,125 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:24,125 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:24,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,126 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:24,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-15 23:16:24,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:24,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,152 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:24,152 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: [] [2023-02-15 23:16:24,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,160 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:24,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-15 23:16:24,163 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:24,163 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,184 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:24,185 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: [] [2023-02-15 23:16:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-02-15 23:16:24,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,189 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-15 23:16:24,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-15 23:16:24,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:24,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,211 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) [2023-02-15 23:16:24,214 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:24,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,233 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 [2023-02-15 23:16:24,275 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:24,278 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 [2023-02-15 23:16:24,278 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:24,278 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:24,278 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:24,278 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:24,279 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:24,279 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,279 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:24,279 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:24,279 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-02-15 23:16:24,279 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:24,279 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:24,280 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,283 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,310 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,350 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:24,350 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:24,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,351 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) [2023-02-15 23:16:24,356 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:24,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:24,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:24,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:24,363 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-15 23:16:24,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:24,363 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 [2023-02-15 23:16:24,364 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-15 23:16:24,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:24,380 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:24,391 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 [2023-02-15 23:16:24,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,393 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) [2023-02-15 23:16:24,395 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 [2023-02-15 23:16:24,397 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:24,403 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:24,403 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:24,403 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:24,403 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:24,403 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:24,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:24,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:24,419 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:24,421 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:24,421 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:16:24,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,427 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) [2023-02-15 23:16:24,428 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 [2023-02-15 23:16:24,429 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:24,429 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:24,429 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:24,429 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 [] [2023-02-15 23:16:24,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,433 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:24,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:24,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:24,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:24,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:24,477 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-15 23:16:24,477 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) [2023-02-15 23:16:24,495 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. [2023-02-15 23:16:24,495 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 [2023-02-15 23:16:24,496 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) [2023-02-15 23:16:24,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-15 23:16:24,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2023-02-15 23:16:24,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:24,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-02-15 23:16:24,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:24,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2023-02-15 23:16:24,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:24,497 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2023-02-15 23:16:24,498 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-02-15 23:16:24,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2023-02-15 23:16:24,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-02-15 23:16:24,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2023-02-15 23:16:24,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2023-02-15 23:16:24,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:24,499 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 98 transitions. [2023-02-15 23:16:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2023-02-15 23:16:24,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-02-15 23:16:24,501 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) [2023-02-15 23:16:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2023-02-15 23:16:24,501 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-02-15 23:16:24,501 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-02-15 23:16:24,501 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-15 23:16:24,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2023-02-15 23:16:24,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-02-15 23:16:24,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:24,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:24,517 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-02-15 23:16:24,517 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:24,517 INFO L748 eck$LassoCheckResult]: Stem: 387#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 388#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; 392#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 420#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 418#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 416#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 412#L18-1 [2023-02-15 23:16:24,517 INFO L750 eck$LassoCheckResult]: Loop: 412#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 409#L12 assume !(10 == main_~i~0#1); 401#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 402#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 412#L18-1 [2023-02-15 23:16:24,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2023-02-15 23:16:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:24,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912138054] [2023-02-15 23:16:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:24,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:24,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:24,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912138054] [2023-02-15 23:16:24,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912138054] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:16:24,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:16:24,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:16:24,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663532854] [2023-02-15 23:16:24,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:16:24,537 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:16:24,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2023-02-15 23:16:24,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:24,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253909092] [2023-02-15 23:16:24,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:24,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:24,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:24,558 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:24,558 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:24,558 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:24,558 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:24,558 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:24,558 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,558 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:24,558 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:24,558 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2023-02-15 23:16:24,558 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:24,558 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:24,559 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,561 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,565 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,567 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,603 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:24,603 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:24,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,605 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) [2023-02-15 23:16:24,607 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 [2023-02-15 23:16:24,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:24,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:24,629 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: [] [2023-02-15 23:16:24,638 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 [2023-02-15 23:16:24,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,639 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) [2023-02-15 23:16:24,641 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 [2023-02-15 23:16:24,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:24,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:24,664 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: [] [2023-02-15 23:16:24,673 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 [2023-02-15 23:16:24,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,675 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) [2023-02-15 23:16:24,676 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 [2023-02-15 23:16:24,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:24,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,688 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:24,688 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: [] [2023-02-15 23:16:24,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,697 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) [2023-02-15 23:16:24,698 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 [2023-02-15 23:16:24,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:24,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,708 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 [2023-02-15 23:16:24,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,716 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) [2023-02-15 23:16:24,718 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 [2023-02-15 23:16:24,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:24,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:24,733 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:24,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,737 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:24,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:24,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:24,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:24,737 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:24,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:24,737 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:24,737 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2023-02-15 23:16:24,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:24,738 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:24,738 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,742 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,746 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:24,778 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:24,779 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:24,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,780 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) [2023-02-15 23:16:24,782 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 [2023-02-15 23:16:24,784 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:24,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:24,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:24,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:24,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:24,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:24,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:24,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:24,806 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:24,809 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 [2023-02-15 23:16:24,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,810 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) [2023-02-15 23:16:24,811 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 [2023-02-15 23:16:24,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:24,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:24,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:24,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:24,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:24,826 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:24,826 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:24,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:24,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,833 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) [2023-02-15 23:16:24,833 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 [2023-02-15 23:16:24,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:24,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:24,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:24,848 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:24,848 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:24,850 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:24,850 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:24,862 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:24,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:24,873 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) [2023-02-15 23:16:24,875 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 [2023-02-15 23:16:24,877 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:24,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:24,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:24,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:24,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:24,883 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:24,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:24,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:24,904 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:24,913 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:24,914 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:16:24,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:24,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:24,915 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) [2023-02-15 23:16:24,917 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 [2023-02-15 23:16:24,918 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:24,918 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:24,918 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:24,918 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 [] [2023-02-15 23:16:24,921 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 [2023-02-15 23:16:24,922 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:24,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:24,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:24,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:24,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:24,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:24,968 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:24,968 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) [2023-02-15 23:16:24,984 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. [2023-02-15 23:16:24,984 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 [2023-02-15 23:16:24,985 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) [2023-02-15 23:16:24,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-02-15 23:16:24,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2023-02-15 23:16:24,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:24,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2023-02-15 23:16:24,985 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:24,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2023-02-15 23:16:24,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:24,986 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 190 transitions. [2023-02-15 23:16:24,987 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2023-02-15 23:16:24,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 107 states and 175 transitions. [2023-02-15 23:16:24,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2023-02-15 23:16:24,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2023-02-15 23:16:24,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 175 transitions. [2023-02-15 23:16:24,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:24,988 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 175 transitions. [2023-02-15 23:16:24,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 175 transitions. [2023-02-15 23:16:24,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2023-02-15 23:16:24,992 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) [2023-02-15 23:16:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 161 transitions. [2023-02-15 23:16:24,993 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 161 transitions. [2023-02-15 23:16:24,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:24,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:16:24,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:16:24,993 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) [2023-02-15 23:16:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:25,001 INFO L93 Difference]: Finished difference Result 107 states and 163 transitions. [2023-02-15 23:16:25,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 163 transitions. [2023-02-15 23:16:25,002 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2023-02-15 23:16:25,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 101 states and 153 transitions. [2023-02-15 23:16:25,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2023-02-15 23:16:25,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2023-02-15 23:16:25,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 153 transitions. [2023-02-15 23:16:25,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:25,003 INFO L218 hiAutomatonCegarLoop]: Abstraction has 101 states and 153 transitions. [2023-02-15 23:16:25,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 153 transitions. [2023-02-15 23:16:25,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2023-02-15 23:16:25,006 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) [2023-02-15 23:16:25,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2023-02-15 23:16:25,007 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 148 transitions. [2023-02-15 23:16:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:16:25,008 INFO L428 stractBuchiCegarLoop]: Abstraction has 96 states and 148 transitions. [2023-02-15 23:16:25,008 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-15 23:16:25,008 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 148 transitions. [2023-02-15 23:16:25,009 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2023-02-15 23:16:25,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:25,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:25,009 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2023-02-15 23:16:25,009 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:25,009 INFO L748 eck$LassoCheckResult]: Stem: 814#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 815#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; 809#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 811#L12 assume !(10 == main_~i~0#1); 818#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 873#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 868#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 864#L12 assume !(10 == main_~i~0#1); 858#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 856#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 828#L18-1 [2023-02-15 23:16:25,009 INFO L750 eck$LassoCheckResult]: Loop: 828#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 849#L12 assume !(10 == main_~i~0#1); 829#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 827#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 828#L18-1 [2023-02-15 23:16:25,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1506873443, now seen corresponding path program 1 times [2023-02-15 23:16:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:25,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051023568] [2023-02-15 23:16:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:25,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:25,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051023568] [2023-02-15 23:16:25,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051023568] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:16:25,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:16:25,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:16:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656258825] [2023-02-15 23:16:25,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:16:25,025 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:16:25,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 3 times [2023-02-15 23:16:25,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:25,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977035246] [2023-02-15 23:16:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:25,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:25,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:25,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:25,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:25,043 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:25,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:25,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:25,044 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:25,044 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:25,044 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,044 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:25,044 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:25,044 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-02-15 23:16:25,044 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:25,044 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:25,044 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,047 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,049 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,051 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,073 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:25,073 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:25,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,077 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) [2023-02-15 23:16:25,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:25,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:25,094 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 [2023-02-15 23:16:25,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:25,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,107 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) [2023-02-15 23:16:25,109 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 [2023-02-15 23:16:25,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:25,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:25,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:25,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:25,137 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:25,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:25,138 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:25,138 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:25,138 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:25,138 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,138 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:25,138 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:25,138 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-02-15 23:16:25,138 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:25,138 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:25,138 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,140 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,144 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,145 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,181 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:25,181 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:25,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,182 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) [2023-02-15 23:16:25,184 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 [2023-02-15 23:16:25,186 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:25,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:25,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:25,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:25,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:25,193 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:25,193 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:25,213 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:25,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:25,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,221 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) [2023-02-15 23:16:25,223 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 [2023-02-15 23:16:25,225 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:25,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:25,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:25,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:25,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:25,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:25,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:25,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:25,246 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:25,248 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:25,248 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:16:25,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,261 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) [2023-02-15 23:16:25,264 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 [2023-02-15 23:16:25,265 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:25,265 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:25,265 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:25,265 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 [] [2023-02-15 23:16:25,268 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 [2023-02-15 23:16:25,269 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:25,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,318 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:25,318 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) [2023-02-15 23:16:25,352 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. [2023-02-15 23:16:25,355 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 [2023-02-15 23:16:25,355 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) [2023-02-15 23:16:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-02-15 23:16:25,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2023-02-15 23:16:25,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:25,356 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,405 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:25,405 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) [2023-02-15 23:16:25,423 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. [2023-02-15 23:16:25,423 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 [2023-02-15 23:16:25,427 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) [2023-02-15 23:16:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-02-15 23:16:25,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2023-02-15 23:16:25,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:25,427 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:25,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,475 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:25,475 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) [2023-02-15 23:16:25,494 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. [2023-02-15 23:16:25,494 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 [2023-02-15 23:16:25,496 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) [2023-02-15 23:16:25,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2023-02-15 23:16:25,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2023-02-15 23:16:25,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:25,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2023-02-15 23:16:25,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:25,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 8 letters. [2023-02-15 23:16:25,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:25,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 250 transitions. [2023-02-15 23:16:25,502 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 32 [2023-02-15 23:16:25,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 119 states and 180 transitions. [2023-02-15 23:16:25,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2023-02-15 23:16:25,505 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2023-02-15 23:16:25,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 180 transitions. [2023-02-15 23:16:25,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:25,505 INFO L218 hiAutomatonCegarLoop]: Abstraction has 119 states and 180 transitions. [2023-02-15 23:16:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 180 transitions. [2023-02-15 23:16:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2023-02-15 23:16:25,510 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) [2023-02-15 23:16:25,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2023-02-15 23:16:25,510 INFO L240 hiAutomatonCegarLoop]: Abstraction has 77 states and 117 transitions. [2023-02-15 23:16:25,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:25,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:16:25,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:16:25,511 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) [2023-02-15 23:16:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:25,517 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2023-02-15 23:16:25,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 79 transitions. [2023-02-15 23:16:25,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2023-02-15 23:16:25,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 51 states and 68 transitions. [2023-02-15 23:16:25,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2023-02-15 23:16:25,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-02-15 23:16:25,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 68 transitions. [2023-02-15 23:16:25,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:25,518 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 68 transitions. [2023-02-15 23:16:25,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 68 transitions. [2023-02-15 23:16:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-02-15 23:16:25,521 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) [2023-02-15 23:16:25,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2023-02-15 23:16:25,522 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 65 transitions. [2023-02-15 23:16:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:16:25,523 INFO L428 stractBuchiCegarLoop]: Abstraction has 48 states and 65 transitions. [2023-02-15 23:16:25,523 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-15 23:16:25,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 65 transitions. [2023-02-15 23:16:25,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2023-02-15 23:16:25,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:25,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:25,523 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:16:25,523 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:25,524 INFO L748 eck$LassoCheckResult]: Stem: 1662#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1663#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; 1657#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1658#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1667#L12-2 assume !(0 == main_~i~0#1); 1664#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1665#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1684#L12 assume !(10 == main_~i~0#1); 1681#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1654#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1676#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1674#L12 [2023-02-15 23:16:25,524 INFO L750 eck$LassoCheckResult]: Loop: 1674#L12 assume !(10 == main_~i~0#1); 1672#L12-2 assume !(0 == main_~i~0#1); 1668#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1669#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1674#L12 [2023-02-15 23:16:25,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2023-02-15 23:16:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:25,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362470408] [2023-02-15 23:16:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:25,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:25,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362470408] [2023-02-15 23:16:25,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362470408] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:16:25,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976912315] [2023-02-15 23:16:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:25,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:16:25,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,555 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) [2023-02-15 23:16:25,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-02-15 23:16:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:16:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976912315] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:16:25,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:16:25,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-02-15 23:16:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841850701] [2023-02-15 23:16:25,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:16:25,594 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:16:25,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2023-02-15 23:16:25,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:25,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499724716] [2023-02-15 23:16:25,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:25,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:25,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:25,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:25,613 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 [2023-02-15 23:16:25,614 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 [2023-02-15 23:16:25,628 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:25,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:25,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:25,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:25,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:25,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:25,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:25,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-02-15 23:16:25,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:25,629 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:25,629 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,633 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,638 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,691 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:25,691 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:25,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,692 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) [2023-02-15 23:16:25,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:25,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:25,706 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 [2023-02-15 23:16:25,714 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:25,714 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: [] [2023-02-15 23:16:25,719 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 [2023-02-15 23:16:25,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,720 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) [2023-02-15 23:16:25,722 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 [2023-02-15 23:16:25,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:25,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:25,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:25,745 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: [] [2023-02-15 23:16:25,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-02-15 23:16:25,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,752 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) [2023-02-15 23:16:25,754 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 [2023-02-15 23:16:25,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:25,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:25,767 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 [2023-02-15 23:16:25,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,768 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) [2023-02-15 23:16:25,769 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 [2023-02-15 23:16:25,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:25,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:25,800 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:25,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:25,804 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:25,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:25,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:25,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:25,804 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:25,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:25,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:25,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-02-15 23:16:25,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:25,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:25,805 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,807 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,820 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,822 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:25,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:25,872 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:25,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,873 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) [2023-02-15 23:16:25,877 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 [2023-02-15 23:16:25,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:25,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:25,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:25,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:25,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:25,885 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:25,885 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:25,887 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:25,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:25,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,891 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) [2023-02-15 23:16:25,891 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 [2023-02-15 23:16:25,894 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:25,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:25,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:25,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:25,899 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-15 23:16:25,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:25,900 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-15 23:16:25,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:25,902 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:25,904 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:25,904 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-15 23:16:25,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:25,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:25,905 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) [2023-02-15 23:16:25,906 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 [2023-02-15 23:16:25,908 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:25,908 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:25,908 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:25,908 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 [] [2023-02-15 23:16:25,910 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 [2023-02-15 23:16:25,911 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:25,952 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:25,952 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) [2023-02-15 23:16:25,969 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. [2023-02-15 23:16:25,969 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 [2023-02-15 23:16:25,970 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) [2023-02-15 23:16:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-15 23:16:25,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-02-15 23:16:25,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:25,970 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:25,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:25,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:25,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:26,010 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:26,010 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) [2023-02-15 23:16:26,024 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. [2023-02-15 23:16:26,024 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 [2023-02-15 23:16:26,025 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) [2023-02-15 23:16:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-15 23:16:26,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-02-15 23:16:26,025 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:26,025 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:26,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:26,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:26,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:26,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:26,064 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:26,064 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) [2023-02-15 23:16:26,080 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. [2023-02-15 23:16:26,081 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 [2023-02-15 23:16:26,081 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) [2023-02-15 23:16:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-15 23:16:26,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2023-02-15 23:16:26,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:26,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2023-02-15 23:16:26,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:26,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2023-02-15 23:16:26,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:26,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 124 transitions. [2023-02-15 23:16:26,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2023-02-15 23:16:26,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 56 states and 76 transitions. [2023-02-15 23:16:26,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-02-15 23:16:26,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-02-15 23:16:26,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 76 transitions. [2023-02-15 23:16:26,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:26,084 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-02-15 23:16:26,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 76 transitions. [2023-02-15 23:16:26,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2023-02-15 23:16:26,085 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) [2023-02-15 23:16:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2023-02-15 23:16:26,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 57 transitions. [2023-02-15 23:16:26,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:26,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:16:26,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:16:26,086 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) [2023-02-15 23:16:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:26,108 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2023-02-15 23:16:26,108 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 105 transitions. [2023-02-15 23:16:26,109 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2023-02-15 23:16:26,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 72 states and 93 transitions. [2023-02-15 23:16:26,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-02-15 23:16:26,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2023-02-15 23:16:26,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 93 transitions. [2023-02-15 23:16:26,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:26,110 INFO L218 hiAutomatonCegarLoop]: Abstraction has 72 states and 93 transitions. [2023-02-15 23:16:26,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 93 transitions. [2023-02-15 23:16:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2023-02-15 23:16:26,111 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) [2023-02-15 23:16:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2023-02-15 23:16:26,112 INFO L240 hiAutomatonCegarLoop]: Abstraction has 66 states and 85 transitions. [2023-02-15 23:16:26,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:16:26,112 INFO L428 stractBuchiCegarLoop]: Abstraction has 66 states and 85 transitions. [2023-02-15 23:16:26,113 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-02-15 23:16:26,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 85 transitions. [2023-02-15 23:16:26,113 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-02-15 23:16:26,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:26,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:26,113 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:16:26,114 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:26,114 INFO L748 eck$LassoCheckResult]: Stem: 2288#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2289#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; 2293#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2298#L12 assume !(10 == main_~i~0#1); 2280#L12-2 assume !(0 == main_~i~0#1); 2281#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2312#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2294#L12 assume !(10 == main_~i~0#1); 2282#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2283#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2322#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2310#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2309#L12-2 [2023-02-15 23:16:26,114 INFO L750 eck$LassoCheckResult]: Loop: 2309#L12-2 assume !(0 == main_~i~0#1); 2345#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2344#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2308#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2309#L12-2 [2023-02-15 23:16:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2023-02-15 23:16:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:26,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448604585] [2023-02-15 23:16:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:26,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 23:16:26,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:26,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448604585] [2023-02-15 23:16:26,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448604585] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:16:26,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:16:26,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:16:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941613834] [2023-02-15 23:16:26,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:16:26,135 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:16:26,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:26,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2023-02-15 23:16:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:26,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615768584] [2023-02-15 23:16:26,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:26,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:26,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:26,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:26,158 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:26,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:26,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:26,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:26,158 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:26,158 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,159 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:26,159 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:26,159 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-02-15 23:16:26,159 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:26,159 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:26,159 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,163 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,165 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,166 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,210 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:26,211 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:26,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,212 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) [2023-02-15 23:16:26,214 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 [2023-02-15 23:16:26,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:26,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,223 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:26,223 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: [] [2023-02-15 23:16:26,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:26,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,227 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) [2023-02-15 23:16:26,227 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 [2023-02-15 23:16:26,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:26,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:26,241 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: [] [2023-02-15 23:16:26,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:26,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,244 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) [2023-02-15 23:16:26,246 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 [2023-02-15 23:16:26,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:26,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,258 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:26,258 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: [] [2023-02-15 23:16:26,261 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 [2023-02-15 23:16:26,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,262 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) [2023-02-15 23:16:26,264 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 [2023-02-15 23:16:26,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:26,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2023-02-15 23:16:26,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,284 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) [2023-02-15 23:16:26,285 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 [2023-02-15 23:16:26,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:26,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,359 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:26,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2023-02-15 23:16:26,362 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:26,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:26,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:26,362 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:26,362 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:26,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:26,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:26,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-02-15 23:16:26,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:26,363 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:26,363 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,367 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,369 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,370 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,405 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:26,405 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:26,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,407 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) [2023-02-15 23:16:26,408 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 [2023-02-15 23:16:26,410 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:26,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:26,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:26,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:26,415 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-02-15 23:16:26,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:26,416 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-02-15 23:16:26,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:26,420 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:26,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:26,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,424 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) [2023-02-15 23:16:26,424 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 [2023-02-15 23:16:26,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:26,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:26,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:26,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:26,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:26,434 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:26,434 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:26,436 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:26,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2023-02-15 23:16:26,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,440 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) [2023-02-15 23:16:26,440 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 [2023-02-15 23:16:26,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:26,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:26,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:26,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:26,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:26,450 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:26,450 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:26,461 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 [2023-02-15 23:16:26,465 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:26,494 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 [2023-02-15 23:16:26,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,495 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) [2023-02-15 23:16:26,495 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 [2023-02-15 23:16:26,498 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:26,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:26,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:26,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:26,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:26,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:26,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:26,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:26,513 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:26,515 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:26,515 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:16:26,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,516 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) [2023-02-15 23:16:26,517 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 [2023-02-15 23:16:26,519 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:26,519 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:26,519 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:26,519 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 [] [2023-02-15 23:16:26,521 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 [2023-02-15 23:16:26,522 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:26,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:26,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:26,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:26,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:26,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:26,564 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:26,564 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) [2023-02-15 23:16:26,589 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. [2023-02-15 23:16:26,590 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 [2023-02-15 23:16:26,590 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) [2023-02-15 23:16:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-15 23:16:26,590 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2023-02-15 23:16:26,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:26,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2023-02-15 23:16:26,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:26,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2023-02-15 23:16:26,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:26,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 209 transitions. [2023-02-15 23:16:26,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-02-15 23:16:26,593 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 126 states and 161 transitions. [2023-02-15 23:16:26,593 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2023-02-15 23:16:26,593 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2023-02-15 23:16:26,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 161 transitions. [2023-02-15 23:16:26,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:26,593 INFO L218 hiAutomatonCegarLoop]: Abstraction has 126 states and 161 transitions. [2023-02-15 23:16:26,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 161 transitions. [2023-02-15 23:16:26,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2023-02-15 23:16:26,609 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) [2023-02-15 23:16:26,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2023-02-15 23:16:26,609 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 155 transitions. [2023-02-15 23:16:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 23:16:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 23:16:26,610 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) [2023-02-15 23:16:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:26,623 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2023-02-15 23:16:26,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 174 transitions. [2023-02-15 23:16:26,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2023-02-15 23:16:26,624 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 138 states and 174 transitions. [2023-02-15 23:16:26,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2023-02-15 23:16:26,625 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2023-02-15 23:16:26,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 138 states and 174 transitions. [2023-02-15 23:16:26,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:26,625 INFO L218 hiAutomatonCegarLoop]: Abstraction has 138 states and 174 transitions. [2023-02-15 23:16:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states and 174 transitions. [2023-02-15 23:16:26,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2023-02-15 23:16:26,626 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) [2023-02-15 23:16:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2023-02-15 23:16:26,627 INFO L240 hiAutomatonCegarLoop]: Abstraction has 117 states and 147 transitions. [2023-02-15 23:16:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 23:16:26,628 INFO L428 stractBuchiCegarLoop]: Abstraction has 117 states and 147 transitions. [2023-02-15 23:16:26,628 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-02-15 23:16:26,628 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 147 transitions. [2023-02-15 23:16:26,628 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-02-15 23:16:26,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:26,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:26,630 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2023-02-15 23:16:26,630 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:16:26,630 INFO L748 eck$LassoCheckResult]: Stem: 2843#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2844#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; 2848#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2856#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2835#L12-2 assume !(0 == main_~i~0#1); 2836#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2950#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2851#L12 assume !(10 == main_~i~0#1); 2837#L12-2 assume !(0 == main_~i~0#1); 2838#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2847#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2949#L12 assume !(10 == main_~i~0#1); 2948#L12-2 assume !(0 == main_~i~0#1); 2947#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2945#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2944#L12 assume !(10 == main_~i~0#1); 2943#L12-2 assume !(0 == main_~i~0#1); 2941#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2942#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2946#L12 assume !(10 == main_~i~0#1); 2850#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2910#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2907#L12 assume !(10 == main_~i~0#1); 2885#L12-2 assume !(0 == main_~i~0#1); 2887#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2884#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2858#L12-2 [2023-02-15 23:16:26,630 INFO L750 eck$LassoCheckResult]: Loop: 2858#L12-2 assume !(0 == main_~i~0#1); 2853#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2854#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2882#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2858#L12-2 [2023-02-15 23:16:26,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2023-02-15 23:16:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:26,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455961557] [2023-02-15 23:16:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:26,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 23:16:26,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:26,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455961557] [2023-02-15 23:16:26,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455961557] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:16:26,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031089419] [2023-02-15 23:16:26,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:16:26,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:16:26,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,715 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) [2023-02-15 23:16:26,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-02-15 23:16:26,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 23:16:26,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:16:26,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:26,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 23:16:26,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:16:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 23:16:26,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031089419] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:16:26,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:16:26,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-02-15 23:16:26,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890284861] [2023-02-15 23:16:26,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:16:26,778 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-15 23:16:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2023-02-15 23:16:26,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:26,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859220882] [2023-02-15 23:16:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:26,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:26,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:26,799 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:26,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:26,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:26,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:26,800 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:26,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:26,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:26,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-02-15 23:16:26,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:26,800 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:26,800 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,802 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,805 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,807 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,839 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:26,839 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:26,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,842 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) [2023-02-15 23:16:26,842 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 [2023-02-15 23:16:26,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:26,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:26,854 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: [] [2023-02-15 23:16:26,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:26,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,857 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) [2023-02-15 23:16:26,858 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 [2023-02-15 23:16:26,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:26,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:26,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,870 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) [2023-02-15 23:16:26,871 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 [2023-02-15 23:16:26,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:26,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:26,945 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:26,949 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 [2023-02-15 23:16:26,949 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:26,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:26,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:26,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:26,949 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:26,949 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,949 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:26,949 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:26,949 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-02-15 23:16:26,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:26,949 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:26,950 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,952 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,955 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:26,996 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:26,997 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:26,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:26,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:26,998 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) [2023-02-15 23:16:27,000 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 [2023-02-15 23:16:27,001 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:27,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:27,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:27,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:27,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:27,007 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:27,007 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:27,017 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:27,020 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 [2023-02-15 23:16:27,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:27,021 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) [2023-02-15 23:16:27,021 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 [2023-02-15 23:16:27,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:27,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:27,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:27,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:27,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:27,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:27,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:27,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:27,039 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:27,041 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:27,041 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:16:27,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:27,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:27,043 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) [2023-02-15 23:16:27,044 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 [2023-02-15 23:16:27,045 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:27,045 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:27,045 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:27,045 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 [] [2023-02-15 23:16:27,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:27,048 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:27,102 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:27,102 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) [2023-02-15 23:16:27,121 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. [2023-02-15 23:16:27,121 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 [2023-02-15 23:16:27,121 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) [2023-02-15 23:16:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-15 23:16:27,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2023-02-15 23:16:27,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:27,122 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:27,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:27,169 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:27,169 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) [2023-02-15 23:16:27,187 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. [2023-02-15 23:16:27,187 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 [2023-02-15 23:16:27,188 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) [2023-02-15 23:16:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-02-15 23:16:27,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2023-02-15 23:16:27,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:27,188 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:27,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:16:27,254 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-15 23:16:27,254 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) [2023-02-15 23:16:27,282 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. [2023-02-15 23:16:27,283 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 [2023-02-15 23:16:27,283 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) [2023-02-15 23:16:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-02-15 23:16:27,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2023-02-15 23:16:27,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:27,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2023-02-15 23:16:27,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:27,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2023-02-15 23:16:27,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:27,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 176 states and 219 transitions. [2023-02-15 23:16:27,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2023-02-15 23:16:27,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 176 states to 121 states and 151 transitions. [2023-02-15 23:16:27,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-02-15 23:16:27,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-02-15 23:16:27,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 151 transitions. [2023-02-15 23:16:27,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:27,286 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121 states and 151 transitions. [2023-02-15 23:16:27,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 151 transitions. [2023-02-15 23:16:27,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2023-02-15 23:16:27,287 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) [2023-02-15 23:16:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2023-02-15 23:16:27,287 INFO L240 hiAutomatonCegarLoop]: Abstraction has 76 states and 95 transitions. [2023-02-15 23:16:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 23:16:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:16:27,287 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) [2023-02-15 23:16:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:27,343 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2023-02-15 23:16:27,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 194 transitions. [2023-02-15 23:16:27,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2023-02-15 23:16:27,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 153 states and 188 transitions. [2023-02-15 23:16:27,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-15 23:16:27,345 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-15 23:16:27,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 188 transitions. [2023-02-15 23:16:27,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:27,346 INFO L218 hiAutomatonCegarLoop]: Abstraction has 153 states and 188 transitions. [2023-02-15 23:16:27,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states and 188 transitions. [2023-02-15 23:16:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 104. [2023-02-15 23:16:27,347 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) [2023-02-15 23:16:27,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2023-02-15 23:16:27,347 INFO L240 hiAutomatonCegarLoop]: Abstraction has 104 states and 126 transitions. [2023-02-15 23:16:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 23:16:27,349 INFO L428 stractBuchiCegarLoop]: Abstraction has 104 states and 126 transitions. [2023-02-15 23:16:27,349 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-02-15 23:16:27,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 126 transitions. [2023-02-15 23:16:27,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2023-02-15 23:16:27,349 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:27,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:27,350 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-02-15 23:16:27,350 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2023-02-15 23:16:27,350 INFO L748 eck$LassoCheckResult]: Stem: 4231#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 4232#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; 4226#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4228#L12 assume !(10 == main_~i~0#1); 4251#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4249#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4241#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 [2023-02-15 23:16:27,350 INFO L750 eck$LassoCheckResult]: Loop: 4242#L12 assume !(10 == main_~i~0#1); 4270#L12-2 assume !(0 == main_~i~0#1); 4269#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4268#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4267#L12 assume !(10 == main_~i~0#1); 4266#L12-2 assume !(0 == main_~i~0#1); 4265#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4264#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4263#L12 assume !(10 == main_~i~0#1); 4262#L12-2 assume !(0 == main_~i~0#1); 4261#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4260#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4259#L12 assume !(10 == main_~i~0#1); 4258#L12-2 assume !(0 == main_~i~0#1); 4257#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4256#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4255#L12 assume !(10 == main_~i~0#1); 4245#L12-2 assume !(0 == main_~i~0#1); 4248#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4244#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4246#L12-2 assume !(0 == main_~i~0#1); 4310#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4309#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4308#L12 assume !(10 == main_~i~0#1); 4307#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; 4305#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4304#L12 assume !(10 == main_~i~0#1); 4303#L12-2 assume !(0 == main_~i~0#1); 4302#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4301#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4300#L12 assume !(10 == main_~i~0#1); 4299#L12-2 assume !(0 == main_~i~0#1); 4298#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4297#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4295#L12 assume !(10 == main_~i~0#1); 4294#L12-2 assume !(0 == main_~i~0#1); 4292#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4293#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4228#L12 assume !(10 == main_~i~0#1); 4251#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4249#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4241#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 [2023-02-15 23:16:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 2 times [2023-02-15 23:16:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:27,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326032215] [2023-02-15 23:16:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:27,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:27,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:27,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1466490324, now seen corresponding path program 1 times [2023-02-15 23:16:27,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:27,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338937653] [2023-02-15 23:16:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:27,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,402 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 [2023-02-15 23:16:27,405 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 [2023-02-15 23:16:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 23:16:27,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:27,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338937653] [2023-02-15 23:16:27,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338937653] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:16:27,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877998689] [2023-02-15 23:16:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:27,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:16:27,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:27,435 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) [2023-02-15 23:16:27,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-02-15 23:16:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 23:16:27,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:16:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 23:16:27,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877998689] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:16:27,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:16:27,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-02-15 23:16:27,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409024981] [2023-02-15 23:16:27,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:16:27,527 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-15 23:16:27,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:27,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 23:16:27,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-15 23:16:27,528 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) [2023-02-15 23:16:27,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:27,569 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2023-02-15 23:16:27,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 198 states and 243 transitions. [2023-02-15 23:16:27,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 72 [2023-02-15 23:16:27,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 198 states to 173 states and 213 transitions. [2023-02-15 23:16:27,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-15 23:16:27,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-15 23:16:27,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 213 transitions. [2023-02-15 23:16:27,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:27,571 INFO L218 hiAutomatonCegarLoop]: Abstraction has 173 states and 213 transitions. [2023-02-15 23:16:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 213 transitions. [2023-02-15 23:16:27,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2023-02-15 23:16:27,573 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) [2023-02-15 23:16:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2023-02-15 23:16:27,573 INFO L240 hiAutomatonCegarLoop]: Abstraction has 164 states and 201 transitions. [2023-02-15 23:16:27,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 23:16:27,574 INFO L428 stractBuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2023-02-15 23:16:27,574 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-02-15 23:16:27,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 201 transitions. [2023-02-15 23:16:27,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2023-02-15 23:16:27,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:27,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:27,575 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-02-15 23:16:27,575 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2023-02-15 23:16:27,575 INFO L748 eck$LassoCheckResult]: Stem: 4806#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 4807#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; 4801#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4803#L12 assume !(10 == main_~i~0#1); 4845#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4844#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4815#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4816#L12 [2023-02-15 23:16:27,576 INFO L750 eck$LassoCheckResult]: Loop: 4816#L12 assume !(10 == main_~i~0#1); 4837#L12-2 assume !(0 == main_~i~0#1); 4836#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4835#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4834#L12 assume !(10 == main_~i~0#1); 4833#L12-2 assume !(0 == main_~i~0#1); 4832#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4831#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4830#L12 assume !(10 == main_~i~0#1); 4829#L12-2 assume !(0 == main_~i~0#1); 4828#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4827#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4826#L12 assume !(10 == main_~i~0#1); 4825#L12-2 assume !(0 == main_~i~0#1); 4824#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4823#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4822#L12 assume !(10 == main_~i~0#1); 4819#L12-2 assume !(0 == main_~i~0#1); 4821#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4820#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4818#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4798#L12-2 assume !(0 == main_~i~0#1); 4799#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4804#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4805#L12 assume !(10 == main_~i~0#1); 4812#L12-2 assume !(0 == main_~i~0#1); 4961#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4960#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4959#L12 assume !(10 == main_~i~0#1); 4958#L12-2 assume !(0 == main_~i~0#1); 4957#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4956#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4955#L12 assume !(10 == main_~i~0#1); 4954#L12-2 assume !(0 == main_~i~0#1); 4953#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4952#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4951#L12 assume !(10 == main_~i~0#1); 4950#L12-2 assume !(0 == main_~i~0#1); 4949#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4948#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4947#L12 assume !(10 == main_~i~0#1); 4946#L12-2 assume !(0 == main_~i~0#1); 4945#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4944#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4943#L12 assume !(10 == main_~i~0#1); 4942#L12-2 assume !(0 == main_~i~0#1); 4941#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4940#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4939#L12 assume !(10 == main_~i~0#1); 4938#L12-2 assume !(0 == main_~i~0#1); 4937#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4936#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4935#L12 assume !(10 == main_~i~0#1); 4934#L12-2 assume !(0 == main_~i~0#1); 4933#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4932#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4852#L12 assume !(10 == main_~i~0#1); 4931#L12-2 assume !(0 == main_~i~0#1); 4896#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4851#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4803#L12 assume !(10 == main_~i~0#1); 4845#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4844#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4815#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4816#L12 [2023-02-15 23:16:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 3 times [2023-02-15 23:16:27,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:27,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159971784] [2023-02-15 23:16:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:27,580 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:27,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:27,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:27,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash 726843037, now seen corresponding path program 2 times [2023-02-15 23:16:27,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:27,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6778734] [2023-02-15 23:16:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:27,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:27,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:27,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1110135673, now seen corresponding path program 4 times [2023-02-15 23:16:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:27,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739924250] [2023-02-15 23:16:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:27,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:27,709 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-02-15 23:16:27,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:27,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739924250] [2023-02-15 23:16:27,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739924250] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:16:27,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681212065] [2023-02-15 23:16:27,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:16:27,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:16:27,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:27,710 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) [2023-02-15 23:16:27,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-02-15 23:16:27,739 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:16:27,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:16:27,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 23:16:27,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:27,767 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-02-15 23:16:27,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:16:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-02-15 23:16:27,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681212065] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:16:27,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:16:27,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2023-02-15 23:16:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454845735] [2023-02-15 23:16:27,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:16:28,091 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:28,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:28,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:28,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:28,091 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 23:16:28,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:28,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:28,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-02-15 23:16:28,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:28,091 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:28,092 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,095 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,097 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,100 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,134 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:28,134 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 23:16:28,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,137 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) [2023-02-15 23:16:28,138 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 [2023-02-15 23:16:28,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:28,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:28,160 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:28,160 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: [] [2023-02-15 23:16:28,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:28,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,166 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) [2023-02-15 23:16:28,168 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 [2023-02-15 23:16:28,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:28,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:28,208 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 23:16:28,208 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: [] [2023-02-15 23:16:28,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-02-15 23:16:28,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,213 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) [2023-02-15 23:16:28,213 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 [2023-02-15 23:16:28,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 23:16:28,216 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:28,230 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 [2023-02-15 23:16:28,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,231 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) [2023-02-15 23:16:28,231 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 [2023-02-15 23:16:28,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 23:16:28,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 23:16:28,243 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 23:16:28,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-02-15 23:16:28,246 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 23:16:28,246 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 23:16:28,246 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 23:16:28,246 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 23:16:28,246 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 23:16:28,246 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,246 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 23:16:28,246 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 23:16:28,246 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-02-15 23:16:28,246 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 23:16:28,247 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 23:16:28,247 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,255 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,257 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,260 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 23:16:28,287 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 23:16:28,287 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 23:16:28,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,288 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) [2023-02-15 23:16:28,289 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 [2023-02-15 23:16:28,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:28,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:28,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:28,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:28,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:28,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:28,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:28,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:28,299 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:28,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2023-02-15 23:16:28,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,303 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) [2023-02-15 23:16:28,304 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 [2023-02-15 23:16:28,306 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:28,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:28,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:28,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:28,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:28,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 23:16:28,313 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 23:16:28,315 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 23:16:28,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2023-02-15 23:16:28,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,319 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) [2023-02-15 23:16:28,319 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 [2023-02-15 23:16:28,322 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-15 23:16:28,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 23:16:28,328 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 23:16:28,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 23:16:28,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 23:16:28,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 23:16:28,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 23:16:28,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 23:16:28,330 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 23:16:28,331 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 23:16:28,332 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 23:16:28,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:16:28,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:16:28,333 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) [2023-02-15 23:16:28,333 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 [2023-02-15 23:16:28,335 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 23:16:28,335 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 23:16:28,335 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 23:16:28,335 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 [] [2023-02-15 23:16:28,338 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 [2023-02-15 23:16:28,338 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 23:16:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:28,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:28,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:28,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:16:28,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:28,509 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 23:16:28,511 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2023-02-15 23:16:28,511 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) [2023-02-15 23:16:28,593 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. [2023-02-15 23:16:28,593 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 [2023-02-15 23:16:28,593 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) [2023-02-15 23:16:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2023-02-15 23:16:28,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 7 letters. Loop has 64 letters. [2023-02-15 23:16:28,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:28,597 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:28,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:28,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:28,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:28,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:16:28,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 23:16:28,760 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2023-02-15 23:16:28,760 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) [2023-02-15 23:16:28,889 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 [2023-02-15 23:16:28,949 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. [2023-02-15 23:16:28,949 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 [2023-02-15 23:16:28,950 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) [2023-02-15 23:16:28,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 67 transitions. [2023-02-15 23:16:28,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 67 transitions. Stem has 7 letters. Loop has 64 letters. [2023-02-15 23:16:28,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:28,950 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:28,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:28,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:28,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:28,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:16:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 23:16:29,090 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2023-02-15 23:16:29,090 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) [2023-02-15 23:16:29,263 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. [2023-02-15 23:16:29,263 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 [2023-02-15 23:16:29,263 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) [2023-02-15 23:16:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 76 transitions. [2023-02-15 23:16:29,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 76 transitions. Stem has 7 letters. Loop has 64 letters. [2023-02-15 23:16:29,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:29,265 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 23:16:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:29,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 23:16:29,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:29,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 23:16:29,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:16:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-15 23:16:29,397 INFO L141 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 [2023-02-15 23:16:29,397 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) [2023-02-15 23:16:29,583 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. [2023-02-15 23:16:29,584 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 [2023-02-15 23:16:29,584 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) [2023-02-15 23:16:29,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 78 transitions. [2023-02-15 23:16:29,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 64 letters. [2023-02-15 23:16:29,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:29,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 71 letters. Loop has 64 letters. [2023-02-15 23:16:29,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:29,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 128 letters. [2023-02-15 23:16:29,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 23:16:29,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1639 states and 1887 transitions. [2023-02-15 23:16:29,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 307 [2023-02-15 23:16:29,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1639 states to 522 states and 614 transitions. [2023-02-15 23:16:29,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-02-15 23:16:29,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2023-02-15 23:16:29,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 614 transitions. [2023-02-15 23:16:29,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:29,595 INFO L218 hiAutomatonCegarLoop]: Abstraction has 522 states and 614 transitions. [2023-02-15 23:16:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 614 transitions. [2023-02-15 23:16:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 163. [2023-02-15 23:16:29,598 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) [2023-02-15 23:16:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2023-02-15 23:16:29,598 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 197 transitions. [2023-02-15 23:16:29,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 23:16:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-15 23:16:29,598 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) [2023-02-15 23:16:29,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:29,634 INFO L93 Difference]: Finished difference Result 398 states and 454 transitions. [2023-02-15 23:16:29,634 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 454 transitions. [2023-02-15 23:16:29,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 195 [2023-02-15 23:16:29,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 298 states and 353 transitions. [2023-02-15 23:16:29,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2023-02-15 23:16:29,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2023-02-15 23:16:29,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 298 states and 353 transitions. [2023-02-15 23:16:29,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:29,637 INFO L218 hiAutomatonCegarLoop]: Abstraction has 298 states and 353 transitions. [2023-02-15 23:16:29,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states and 353 transitions. [2023-02-15 23:16:29,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 152. [2023-02-15 23:16:29,639 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) [2023-02-15 23:16:29,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2023-02-15 23:16:29,639 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 183 transitions. [2023-02-15 23:16:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 23:16:29,640 INFO L428 stractBuchiCegarLoop]: Abstraction has 152 states and 183 transitions. [2023-02-15 23:16:29,640 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-02-15 23:16:29,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 183 transitions. [2023-02-15 23:16:29,640 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2023-02-15 23:16:29,640 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:29,640 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:29,641 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-02-15 23:16:29,641 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [21, 20, 19, 11, 10, 2, 1] [2023-02-15 23:16:29,641 INFO L748 eck$LassoCheckResult]: Stem: 11576#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 11577#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11581#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11591#L12 assume !(10 == main_~i~0#1); 11594#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11592#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11585#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11586#L12 [2023-02-15 23:16:29,641 INFO L750 eck$LassoCheckResult]: Loop: 11586#L12 assume !(10 == main_~i~0#1); 11674#L12-2 assume !(0 == main_~i~0#1); 11673#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11672#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11671#L12 assume !(10 == main_~i~0#1); 11670#L12-2 assume !(0 == main_~i~0#1); 11669#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11668#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11667#L12 assume !(10 == main_~i~0#1); 11666#L12-2 assume !(0 == main_~i~0#1); 11665#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11664#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11663#L12 assume !(10 == main_~i~0#1); 11660#L12-2 assume !(0 == main_~i~0#1); 11662#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11661#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11659#L12 assume !(10 == main_~i~0#1); 11568#L12-2 assume !(0 == main_~i~0#1); 11569#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11572#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11573#L12 assume !(10 == main_~i~0#1); 11658#L12-2 assume !(0 == main_~i~0#1); 11657#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11656#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11655#L12 assume !(10 == main_~i~0#1); 11654#L12-2 assume !(0 == main_~i~0#1); 11653#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11652#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11651#L12 assume !(10 == main_~i~0#1); 11650#L12-2 assume !(0 == main_~i~0#1); 11649#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11648#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11647#L12 assume !(10 == main_~i~0#1); 11646#L12-2 assume !(0 == main_~i~0#1); 11645#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11644#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11643#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11642#L12-2 assume !(0 == main_~i~0#1); 11641#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11640#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11639#L12 assume !(10 == main_~i~0#1); 11638#L12-2 assume !(0 == main_~i~0#1); 11637#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11636#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11635#L12 assume !(10 == main_~i~0#1); 11634#L12-2 assume !(0 == main_~i~0#1); 11633#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11632#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11631#L12 assume !(10 == main_~i~0#1); 11630#L12-2 assume !(0 == main_~i~0#1); 11629#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11628#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11627#L12 assume !(10 == main_~i~0#1); 11626#L12-2 assume !(0 == main_~i~0#1); 11625#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11624#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11623#L12 assume !(10 == main_~i~0#1); 11622#L12-2 assume !(0 == main_~i~0#1); 11621#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11620#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11619#L12 assume !(10 == main_~i~0#1); 11618#L12-2 assume !(0 == main_~i~0#1); 11617#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11616#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11615#L12 assume !(10 == main_~i~0#1); 11614#L12-2 assume !(0 == main_~i~0#1); 11613#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11612#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11611#L12 assume !(10 == main_~i~0#1); 11610#L12-2 assume !(0 == main_~i~0#1); 11609#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11608#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11604#L12 assume !(10 == main_~i~0#1); 11606#L12-2 assume !(0 == main_~i~0#1); 11605#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11603#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11602#L12 assume !(10 == main_~i~0#1); 11600#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11601#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11677#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11587#L12 assume !(10 == main_~i~0#1); 11597#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11592#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11585#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11586#L12 [2023-02-15 23:16:29,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:29,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 4 times [2023-02-15 23:16:29,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:29,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410628051] [2023-02-15 23:16:29,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:29,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:29,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:29,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1840948782, now seen corresponding path program 3 times [2023-02-15 23:16:29,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:29,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349226440] [2023-02-15 23:16:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:16:29,677 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-02-15 23:16:29,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:16:29,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349226440] [2023-02-15 23:16:29,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349226440] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:16:29,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:16:29,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:16:29,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810634639] [2023-02-15 23:16:29,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:16:29,677 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-02-15 23:16:29,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:16:29,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 23:16:29,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 23:16:29,678 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) [2023-02-15 23:16:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:16:29,688 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2023-02-15 23:16:29,688 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 181 transitions. [2023-02-15 23:16:29,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-02-15 23:16:29,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 144 states and 170 transitions. [2023-02-15 23:16:29,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-02-15 23:16:29,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2023-02-15 23:16:29,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 170 transitions. [2023-02-15 23:16:29,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 23:16:29,690 INFO L218 hiAutomatonCegarLoop]: Abstraction has 144 states and 170 transitions. [2023-02-15 23:16:29,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 170 transitions. [2023-02-15 23:16:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2023-02-15 23:16:29,691 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) [2023-02-15 23:16:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2023-02-15 23:16:29,691 INFO L240 hiAutomatonCegarLoop]: Abstraction has 101 states and 117 transitions. [2023-02-15 23:16:29,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 23:16:29,692 INFO L428 stractBuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2023-02-15 23:16:29,692 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2023-02-15 23:16:29,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 117 transitions. [2023-02-15 23:16:29,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-02-15 23:16:29,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:16:29,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:16:29,693 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 5, 4, 1, 1, 1] [2023-02-15 23:16:29,693 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-02-15 23:16:29,693 INFO L748 eck$LassoCheckResult]: Stem: 11886#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 11887#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11890#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11899#L12 assume !(10 == main_~i~0#1); 11900#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11901#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11882#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11883#L12 assume !(10 == main_~i~0#1); 11935#L12-2 assume !(0 == main_~i~0#1); 11934#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11933#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11932#L12 assume !(10 == main_~i~0#1); 11931#L12-2 assume !(0 == main_~i~0#1); 11930#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11929#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11928#L12 assume !(10 == main_~i~0#1); 11927#L12-2 assume !(0 == main_~i~0#1); 11926#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11925#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11924#L12 assume !(10 == main_~i~0#1); 11920#L12-2 assume !(0 == main_~i~0#1); 11923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11922#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11919#L12 assume !(10 == main_~i~0#1); 11902#L12-2 [2023-02-15 23:16:29,693 INFO L750 eck$LassoCheckResult]: Loop: 11902#L12-2 assume !(0 == main_~i~0#1); 11895#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11896#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11921#L12 assume !(10 == main_~i~0#1); 11918#L12-2 assume !(0 == main_~i~0#1); 11917#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11916#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11915#L12 assume !(10 == main_~i~0#1); 11914#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; 11912#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11911#L12 assume !(10 == main_~i~0#1); 11910#L12-2 assume !(0 == main_~i~0#1); 11909#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11907#L12 assume !(10 == main_~i~0#1); 11906#L12-2 assume !(0 == main_~i~0#1); 11905#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11904#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11903#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11879#L12-2 assume !(0 == main_~i~0#1); 11880#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11884#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11885#L12 assume !(10 == main_~i~0#1); 11977#L12-2 assume !(0 == main_~i~0#1); 11976#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11975#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11974#L12 assume !(10 == main_~i~0#1); 11973#L12-2 assume !(0 == main_~i~0#1); 11972#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11971#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11970#L12 assume !(10 == main_~i~0#1); 11969#L12-2 assume !(0 == main_~i~0#1); 11968#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11967#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11966#L12 assume !(10 == main_~i~0#1); 11965#L12-2 assume !(0 == main_~i~0#1); 11964#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11963#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11962#L12 assume !(10 == main_~i~0#1); 11961#L12-2 assume !(0 == main_~i~0#1); 11960#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11959#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11958#L12 assume !(10 == main_~i~0#1); 11957#L12-2 assume !(0 == main_~i~0#1); 11956#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11955#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 := main_~i~0#1 - 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 := main_~i~0#1 - 1; 11947#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11944#L12 assume !(10 == main_~i~0#1); 11946#L12-2 assume !(0 == main_~i~0#1); 11945#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11943#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11942#L12 assume !(10 == main_~i~0#1); 11892#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11941#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11938#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11936#L12 assume !(10 == main_~i~0#1); 11935#L12-2 assume !(0 == main_~i~0#1); 11934#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11933#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11932#L12 assume !(10 == main_~i~0#1); 11931#L12-2 assume !(0 == main_~i~0#1); 11930#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11929#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11928#L12 assume !(10 == main_~i~0#1); 11927#L12-2 assume !(0 == main_~i~0#1); 11926#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11925#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11924#L12 assume !(10 == main_~i~0#1); 11920#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); 11919#L12 assume !(10 == main_~i~0#1); 11902#L12-2 [2023-02-15 23:16:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:29,693 INFO L85 PathProgramCache]: Analyzing trace with hash 781927031, now seen corresponding path program 1 times [2023-02-15 23:16:29,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:29,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845776802] [2023-02-15 23:16:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash 921517193, now seen corresponding path program 4 times [2023-02-15 23:16:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:29,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120045411] [2023-02-15 23:16:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:29,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:29,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:16:29,711 INFO L85 PathProgramCache]: Analyzing trace with hash 933372671, now seen corresponding path program 5 times [2023-02-15 23:16:29,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:16:29,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695820838] [2023-02-15 23:16:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:16:29,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:16:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:29,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:16:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:30,167 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:16:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:16:30,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 11:16:30 BoogieIcfgContainer [2023-02-15 23:16:30,198 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 23:16:30,199 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 23:16:30,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 23:16:30,208 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 23:16:30,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:16:22" (3/4) ... [2023-02-15 23:16:30,211 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-15 23:16:30,245 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 23:16:30,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 23:16:30,245 INFO L158 Benchmark]: Toolchain (without parser) took 8023.16ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 98.3MB in the beginning and 105.9MB in the end (delta: -7.6MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2023-02-15 23:16:30,245 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:16:30,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.27ms. Allocated memory is still 136.3MB. Free memory was 98.3MB in the beginning and 89.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 23:16:30,246 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.79ms. Allocated memory is still 136.3MB. Free memory was 89.1MB in the beginning and 87.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:16:30,246 INFO L158 Benchmark]: Boogie Preprocessor took 11.21ms. Allocated memory is still 136.3MB. Free memory was 87.8MB in the beginning and 87.0MB in the end (delta: 772.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:16:30,246 INFO L158 Benchmark]: RCFGBuilder took 142.24ms. Allocated memory is still 136.3MB. Free memory was 86.6MB in the beginning and 78.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 23:16:30,246 INFO L158 Benchmark]: BuchiAutomizer took 7646.73ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 78.2MB in the beginning and 110.1MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:16:30,246 INFO L158 Benchmark]: Witness Printer took 46.29ms. Allocated memory is still 163.6MB. Free memory was 110.1MB in the beginning and 105.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 23:16:30,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 86.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.27ms. Allocated memory is still 136.3MB. Free memory was 98.3MB in the beginning and 89.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.79ms. Allocated memory is still 136.3MB. Free memory was 89.1MB in the beginning and 87.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.21ms. Allocated memory is still 136.3MB. Free memory was 87.8MB in the beginning and 87.0MB in the end (delta: 772.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 142.24ms. Allocated memory is still 136.3MB. Free memory was 86.6MB in the beginning and 78.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7646.73ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 78.2MB in the beginning and 110.1MB in the end (delta: -31.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 46.29ms. Allocated memory is still 163.6MB. Free memory was 110.1MB in the beginning and 105.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 7.5s and 12 iterations. TraceHistogramMax:21. Analysis of lassos took 4.8s. Construction of modules took 0.4s. Büchi inclusion checks took 2.0s. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 3, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 220/480 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 483 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 465 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 923 IncrementalHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 204 mSDtfsCounter, 923 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: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i == 10) VAL [i=0, up=0] [L15] COND TRUE i == 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i == 10) VAL [i=1, up=1] [L15] COND FALSE !(i == 0) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=2, up=1] [L12] COND FALSE !(i == 10) VAL [i=2, up=1] [L15] COND FALSE !(i == 0) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=3, up=1] [L12] COND FALSE !(i == 10) VAL [i=3, up=1] [L15] COND FALSE !(i == 0) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=4, up=1] [L12] COND FALSE !(i == 10) VAL [i=4, up=1] [L15] COND FALSE !(i == 0) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=5, up=1] [L12] COND FALSE !(i == 10) VAL [i=5, up=1] 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. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: 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 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i == 10) VAL [i=0, up=0] [L15] COND TRUE i == 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i == 10) VAL [i=1, up=1] [L15] COND FALSE !(i == 0) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=2, up=1] [L12] COND FALSE !(i == 10) VAL [i=2, up=1] [L15] COND FALSE !(i == 0) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=3, up=1] [L12] COND FALSE !(i == 10) VAL [i=3, up=1] [L15] COND FALSE !(i == 0) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=4, up=1] [L12] COND FALSE !(i == 10) VAL [i=4, up=1] [L15] COND FALSE !(i == 0) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=5, up=1] [L12] COND FALSE !(i == 10) VAL [i=5, up=1] 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! [2023-02-15 23:16:30,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-02-15 23:16:30,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-02-15 23:16:30,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-02-15 23:16:30,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-02-15 23:16:31,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)