./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 26d01a9c 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/c.08.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 e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 09:00:34,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 09:00:34,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 09:00:34,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 09:00:34,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 09:00:34,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 09:00:34,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 09:00:34,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 09:00:34,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 09:00:34,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 09:00:34,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 09:00:34,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 09:00:34,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 09:00:34,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 09:00:34,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 09:00:34,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 09:00:34,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 09:00:34,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 09:00:34,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 09:00:34,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 09:00:34,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 09:00:34,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 09:00:34,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 09:00:34,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 09:00:34,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 09:00:34,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 09:00:34,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 09:00:34,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 09:00:34,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 09:00:34,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 09:00:34,978 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 09:00:34,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 09:00:34,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 09:00:34,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 09:00:34,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 09:00:34,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 09:00:34,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 09:00:34,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 09:00:34,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 09:00:34,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 09:00:34,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 09:00:34,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-18 09:00:35,009 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 09:00:35,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 09:00:35,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 09:00:35,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 09:00:35,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 09:00:35,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 09:00:35,016 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 09:00:35,017 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-18 09:00:35,017 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-18 09:00:35,017 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-18 09:00:35,017 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-18 09:00:35,018 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-18 09:00:35,018 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-18 09:00:35,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 09:00:35,018 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 09:00:35,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 09:00:35,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 09:00:35,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-18 09:00:35,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-18 09:00:35,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-18 09:00:35,019 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 09:00:35,019 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-18 09:00:35,020 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 09:00:35,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-18 09:00:35,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 09:00:35,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 09:00:35,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 09:00:35,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 09:00:35,021 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-18 09:00:35,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b41eab3134232576005c452e063ce9699dbf2a52c4538827c4a32ddc3b6274 [2023-02-18 09:00:35,217 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 09:00:35,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 09:00:35,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 09:00:35,237 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 09:00:35,237 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 09:00:35,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/c.08.c [2023-02-18 09:00:36,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 09:00:36,356 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 09:00:36,357 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/c.08.c [2023-02-18 09:00:36,360 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ff9673d/92a04cdcd8714918948e8d84562b960b/FLAGb03f342a1 [2023-02-18 09:00:36,374 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ff9673d/92a04cdcd8714918948e8d84562b960b [2023-02-18 09:00:36,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 09:00:36,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 09:00:36,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 09:00:36,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 09:00:36,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 09:00:36,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14720d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36, skipping insertion in model container [2023-02-18 09:00:36,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 09:00:36,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 09:00:36,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 09:00:36,513 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 09:00:36,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 09:00:36,533 INFO L208 MainTranslator]: Completed translation [2023-02-18 09:00:36,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36 WrapperNode [2023-02-18 09:00:36,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 09:00:36,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 09:00:36,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 09:00:36,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 09:00:36,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,544 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,553 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2023-02-18 09:00:36,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 09:00:36,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 09:00:36,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 09:00:36,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 09:00:36,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,567 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,567 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 09:00:36,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 09:00:36,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 09:00:36,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 09:00:36,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (1/1) ... [2023-02-18 09:00:36,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:36,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:36,595 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) [2023-02-18 09:00:36,602 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 [2023-02-18 09:00:36,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 09:00:36,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 09:00:36,692 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 09:00:36,694 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 09:00:36,748 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 09:00:36,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 09:00:36,753 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 09:00:36,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:00:36 BoogieIcfgContainer [2023-02-18 09:00:36,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 09:00:36,755 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-18 09:00:36,755 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-18 09:00:36,757 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-18 09:00:36,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 09:00:36,758 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.02 09:00:36" (1/3) ... [2023-02-18 09:00:36,758 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7039a375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 09:00:36, skipping insertion in model container [2023-02-18 09:00:36,759 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 09:00:36,759 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 09:00:36" (2/3) ... [2023-02-18 09:00:36,759 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7039a375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.02 09:00:36, skipping insertion in model container [2023-02-18 09:00:36,759 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-18 09:00:36,759 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:00:36" (3/3) ... [2023-02-18 09:00:36,760 INFO L332 chiAutomizerObserver]: Analyzing ICFG c.08.c [2023-02-18 09:00:36,796 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-18 09:00:36,796 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-18 09:00:36,797 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-18 09:00:36,797 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-18 09:00:36,797 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-18 09:00:36,797 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-18 09:00:36,797 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-18 09:00:36,797 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-18 09:00:36,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:36,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-18 09:00:36,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 09:00:36,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 09:00:36,813 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 09:00:36,814 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-18 09:00:36,814 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-18 09:00:36,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:36,815 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-18 09:00:36,815 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 09:00:36,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 09:00:36,815 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-18 09:00:36,815 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-18 09:00:36,820 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 4#L10-2true [2023-02-18 09:00:36,820 INFO L750 eck$LassoCheckResult]: Loop: 4#L10-2true assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 2#L12-2true assume !(main_~j~0#1 <= main_~i~0#1 - 1); 5#L12-3true main_~i~0#1 := main_~i~0#1 - 1; 4#L10-2true [2023-02-18 09:00:36,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-18 09:00:36,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:36,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498678352] [2023-02-18 09:00:36,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:36,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:36,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:00:36,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:36,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:00:36,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:36,887 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-02-18 09:00:36,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:36,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978837046] [2023-02-18 09:00:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:36,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:00:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:36,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:00:36,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:36,899 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2023-02-18 09:00:36,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:36,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143154130] [2023-02-18 09:00:36,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:36,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:36,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:00:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:36,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:00:36,933 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 09:00:36,934 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 09:00:36,934 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 09:00:36,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 09:00:36,934 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 09:00:36,934 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:36,934 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 09:00:36,934 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 09:00:36,934 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2023-02-18 09:00:36,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 09:00:36,935 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 09:00:36,953 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:36,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:36,959 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:36,968 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 09:00:36,969 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 09:00:36,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:36,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:36,973 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) [2023-02-18 09:00:36,974 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 [2023-02-18 09:00:36,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 09:00:36,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,010 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 09:00:37,010 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: [] [2023-02-18 09:00:37,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-18 09:00:37,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,021 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) [2023-02-18 09:00:37,025 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 [2023-02-18 09:00:37,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 09:00:37,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,045 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 09:00:37,045 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: [] [2023-02-18 09:00:37,051 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 [2023-02-18 09:00:37,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,071 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) [2023-02-18 09:00:37,073 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 [2023-02-18 09:00:37,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 09:00:37,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,100 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 [2023-02-18 09:00:37,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,101 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) [2023-02-18 09:00:37,102 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 [2023-02-18 09:00:37,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 09:00:37,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,128 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 09:00:37,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-02-18 09:00:37,132 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 09:00:37,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 09:00:37,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 09:00:37,133 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 09:00:37,133 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 09:00:37,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,133 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 09:00:37,133 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 09:00:37,133 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2023-02-18 09:00:37,133 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 09:00:37,133 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 09:00:37,135 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,136 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,138 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,141 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 09:00:37,144 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 09:00:37,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,153 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) [2023-02-18 09:00:37,155 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 [2023-02-18 09:00:37,157 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 [2023-02-18 09:00:37,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 09:00:37,164 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 09:00:37,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 09:00:37,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 09:00:37,168 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 09:00:37,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 09:00:37,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 09:00:37,193 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 [2023-02-18 09:00:37,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,196 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) [2023-02-18 09:00:37,197 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 [2023-02-18 09:00:37,209 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 [2023-02-18 09:00:37,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 09:00:37,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 09:00:37,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 09:00:37,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 09:00:37,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 09:00:37,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 09:00:37,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 09:00:37,226 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 09:00:37,230 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-18 09:00:37,230 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-18 09:00:37,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,234 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) [2023-02-18 09:00:37,234 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 [2023-02-18 09:00:37,249 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 09:00:37,249 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 09:00:37,249 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 09:00:37,250 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 [] [2023-02-18 09:00:37,269 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 [2023-02-18 09:00:37,271 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 09:00:37,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:37,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 09:00:37,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:37,322 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 09:00:37,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 09:00:37,358 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 [2023-02-18 09:00:37,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:37,388 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2023-02-18 09:00:37,390 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 [2023-02-18 09:00:37,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:37,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2023-02-18 09:00:37,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2023-02-18 09:00:37,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:37,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2023-02-18 09:00:37,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:37,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2023-02-18 09:00:37,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:37,395 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2023-02-18 09:00:37,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-18 09:00:37,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2023-02-18 09:00:37,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-02-18 09:00:37,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-02-18 09:00:37,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-02-18 09:00:37,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-18 09:00:37,400 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-02-18 09:00:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-02-18 09:00:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-02-18 09:00:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2023-02-18 09:00:37,417 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-02-18 09:00:37,417 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-02-18 09:00:37,417 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-18 09:00:37,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2023-02-18 09:00:37,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-18 09:00:37,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 09:00:37,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 09:00:37,418 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-18 09:00:37,418 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-18 09:00:37,418 INFO L748 eck$LassoCheckResult]: Stem: 79#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 80#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 77#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 74#L12-2 [2023-02-18 09:00:37,418 INFO L750 eck$LassoCheckResult]: Loop: 74#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 74#L12-2 [2023-02-18 09:00:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-18 09:00:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:37,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161162830] [2023-02-18 09:00:37,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:37,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:00:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,425 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:00:37,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:37,425 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-02-18 09:00:37,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:37,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144290181] [2023-02-18 09:00:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:37,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:00:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:00:37,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-02-18 09:00:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:37,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190408919] [2023-02-18 09:00:37,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:37,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:00:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:00:37,446 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 09:00:37,446 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 09:00:37,446 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 09:00:37,446 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 09:00:37,446 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 09:00:37,446 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,446 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 09:00:37,446 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 09:00:37,447 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2023-02-18 09:00:37,447 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 09:00:37,447 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 09:00:37,448 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,448 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,450 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,453 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 09:00:37,453 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 09:00:37,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,454 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) [2023-02-18 09:00:37,456 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 [2023-02-18 09:00:37,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 09:00:37,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,482 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 09:00:37,482 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: [] [2023-02-18 09:00:37,491 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 [2023-02-18 09:00:37,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,492 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) [2023-02-18 09:00:37,493 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 [2023-02-18 09:00:37,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 09:00:37,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,513 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 [2023-02-18 09:00:37,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,515 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) [2023-02-18 09:00:37,526 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 [2023-02-18 09:00:37,526 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 09:00:37,526 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,616 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 09:00:37,620 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 [2023-02-18 09:00:37,620 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 09:00:37,620 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 09:00:37,620 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 09:00:37,620 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 09:00:37,620 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 09:00:37,620 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,620 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 09:00:37,620 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 09:00:37,620 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2023-02-18 09:00:37,620 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 09:00:37,620 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 09:00:37,621 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,624 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,625 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,628 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 09:00:37,628 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 09:00:37,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,630 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) [2023-02-18 09:00:37,633 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 [2023-02-18 09:00:37,634 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 [2023-02-18 09:00:37,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 09:00:37,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 09:00:37,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 09:00:37,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 09:00:37,642 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-18 09:00:37,643 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-18 09:00:37,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-18 09:00:37,665 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 [2023-02-18 09:00:37,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,666 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) [2023-02-18 09:00:37,667 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 [2023-02-18 09:00:37,669 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 [2023-02-18 09:00:37,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 09:00:37,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 09:00:37,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 09:00:37,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 09:00:37,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 09:00:37,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 09:00:37,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 09:00:37,686 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 09:00:37,688 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-18 09:00:37,688 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-18 09:00:37,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,690 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) [2023-02-18 09:00:37,692 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 [2023-02-18 09:00:37,693 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 09:00:37,693 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 09:00:37,693 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 09:00:37,694 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2023-02-18 09:00:37,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-02-18 09:00:37,699 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 09:00:37,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:37,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 09:00:37,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:37,719 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 09:00:37,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 09:00:37,719 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-18 09:00:37,720 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:37,730 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2023-02-18 09:00:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 09:00:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-18 09:00:37,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2023-02-18 09:00:37,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:37,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2023-02-18 09:00:37,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:37,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2023-02-18 09:00:37,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:37,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2023-02-18 09:00:37,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-18 09:00:37,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2023-02-18 09:00:37,735 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-02-18 09:00:37,735 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-02-18 09:00:37,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2023-02-18 09:00:37,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-18 09:00:37,736 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 14 transitions. [2023-02-18 09:00:37,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2023-02-18 09:00:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2023-02-18 09:00:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 09:00:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2023-02-18 09:00:37,738 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-18 09:00:37,738 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-02-18 09:00:37,740 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-18 09:00:37,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2023-02-18 09:00:37,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-18 09:00:37,741 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-18 09:00:37,741 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-18 09:00:37,742 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2023-02-18 09:00:37,742 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-18 09:00:37,742 INFO L748 eck$LassoCheckResult]: Stem: 131#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~i~0#1, main_~j~0#1;havoc main_~c~0#1;havoc main_~i~0#1;havoc main_~j~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 129#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 127#L12-2 assume !(main_~j~0#1 <= main_~i~0#1 - 1); 128#L12-3 main_~i~0#1 := main_~i~0#1 - 1; 130#L10-2 assume !!(main_~i~0#1 >= 0);main_~j~0#1 := 0; 126#L12-2 [2023-02-18 09:00:37,742 INFO L750 eck$LassoCheckResult]: Loop: 126#L12-2 assume !!(main_~j~0#1 <= main_~i~0#1 - 1);main_~j~0#1 := 1 + main_~j~0#1; 126#L12-2 [2023-02-18 09:00:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:37,745 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2023-02-18 09:00:37,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:37,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857870847] [2023-02-18 09:00:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:37,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 09:00:37,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 09:00:37,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857870847] [2023-02-18 09:00:37,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857870847] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 09:00:37,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 09:00:37,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 09:00:37,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363923166] [2023-02-18 09:00:37,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 09:00:37,801 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-02-18 09:00:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:37,801 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2023-02-18 09:00:37,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 09:00:37,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566435025] [2023-02-18 09:00:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 09:00:37,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 09:00:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-18 09:00:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-18 09:00:37,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-18 09:00:37,812 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 09:00:37,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 09:00:37,813 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 09:00:37,813 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 09:00:37,813 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-18 09:00:37,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 09:00:37,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 09:00:37,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2023-02-18 09:00:37,814 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 09:00:37,814 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 09:00:37,815 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,816 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,817 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,819 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 09:00:37,819 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-18 09:00:37,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,821 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) [2023-02-18 09:00:37,824 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 [2023-02-18 09:00:37,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 09:00:37,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,846 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-18 09:00:37,846 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: [] [2023-02-18 09:00:37,850 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 [2023-02-18 09:00:37,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,851 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) [2023-02-18 09:00:37,853 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 [2023-02-18 09:00:37,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-18 09:00:37,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-02-18 09:00:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:37,882 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) [2023-02-18 09:00:37,885 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 [2023-02-18 09:00:37,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-18 09:00:37,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-18 09:00:37,984 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-18 09:00:37,990 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 [2023-02-18 09:00:37,990 INFO L210 LassoAnalysis]: Preferences: [2023-02-18 09:00:37,990 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-18 09:00:37,990 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-18 09:00:37,990 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-18 09:00:37,990 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-18 09:00:37,990 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:37,990 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-18 09:00:37,990 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-18 09:00:37,990 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2023-02-18 09:00:37,990 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-18 09:00:37,990 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-18 09:00:37,991 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,995 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,996 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-18 09:00:37,999 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-18 09:00:37,999 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-18 09:00:37,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:38,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:38,005 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) [2023-02-18 09:00:38,017 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 [2023-02-18 09:00:38,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-18 09:00:38,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-18 09:00:38,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-18 09:00:38,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-18 09:00:38,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-18 09:00:38,025 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 [2023-02-18 09:00:38,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-18 09:00:38,031 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-18 09:00:38,056 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-18 09:00:38,060 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-18 09:00:38,060 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-18 09:00:38,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-18 09:00:38,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 09:00:38,063 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) [2023-02-18 09:00:38,075 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 [2023-02-18 09:00:38,075 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-18 09:00:38,075 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-18 09:00:38,075 INFO L513 LassoAnalysis]: Proved termination. [2023-02-18 09:00:38,075 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2023-02-18 09:00:38,080 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 [2023-02-18 09:00:38,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-18 09:00:38,081 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-18 09:00:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:38,099 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 [2023-02-18 09:00:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:38,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 09:00:38,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:38,112 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 09:00:38,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 09:00:38,113 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-18 09:00:38,115 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-02-18 09:00:38,125 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 12 states and 16 transitions. Complement of second has 5 states. [2023-02-18 09:00:38,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 09:00:38,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-02-18 09:00:38,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-18 09:00:38,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2023-02-18 09:00:38,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:38,126 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-18 09:00:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:38,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 09:00:38,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:38,148 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 09:00:38,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 09:00:38,149 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-18 09:00:38,149 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-02-18 09:00:38,159 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 12 states and 16 transitions. Complement of second has 5 states. [2023-02-18 09:00:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 09:00:38,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-02-18 09:00:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-02-18 09:00:38,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2023-02-18 09:00:38,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:38,161 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-18 09:00:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 09:00:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-18 09:00:38,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 09:00:38,181 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 09:00:38,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 09:00:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 09:00:38,182 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-18 09:00:38,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-02-18 09:00:38,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 10 states and 12 transitions. Complement of second has 4 states. [2023-02-18 09:00:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-18 09:00:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2023-02-18 09:00:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-18 09:00:38,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2023-02-18 09:00:38,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:38,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2023-02-18 09:00:38,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:38,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2023-02-18 09:00:38,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-18 09:00:38,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2023-02-18 09:00:38,199 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-18 09:00:38,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2023-02-18 09:00:38,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-18 09:00:38,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-18 09:00:38,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-18 09:00:38,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 09:00:38,200 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 09:00:38,200 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 09:00:38,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 09:00:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 09:00:38,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 09:00:38,203 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2023-02-18 09:00:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 09:00:38,204 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-02-18 09:00:38,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-02-18 09:00:38,204 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-18 09:00:38,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 09:00:38,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-18 09:00:38,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-18 09:00:38,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-18 09:00:38,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-18 09:00:38,205 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 09:00:38,205 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 09:00:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 09:00:38,206 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 09:00:38,206 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-18 09:00:38,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-18 09:00:38,206 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-18 09:00:38,206 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-18 09:00:38,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.02 09:00:38 BoogieIcfgContainer [2023-02-18 09:00:38,213 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-18 09:00:38,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 09:00:38,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 09:00:38,213 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 09:00:38,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 09:00:36" (3/4) ... [2023-02-18 09:00:38,215 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-18 09:00:38,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 09:00:38,219 INFO L158 Benchmark]: Toolchain (without parser) took 1838.85ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 93.4MB in the beginning and 115.8MB in the end (delta: -22.4MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2023-02-18 09:00:38,219 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory was 99.4MB in the beginning and 99.2MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 09:00:38,220 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.44ms. Allocated memory is still 130.0MB. Free memory was 93.0MB in the beginning and 84.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 09:00:38,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.94ms. Allocated memory is still 130.0MB. Free memory was 84.2MB in the beginning and 82.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 09:00:38,220 INFO L158 Benchmark]: Boogie Preprocessor took 14.23ms. Allocated memory is still 130.0MB. Free memory was 82.9MB in the beginning and 81.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 09:00:38,223 INFO L158 Benchmark]: RCFGBuilder took 184.44ms. Allocated memory is still 130.0MB. Free memory was 81.8MB in the beginning and 73.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 09:00:38,225 INFO L158 Benchmark]: BuchiAutomizer took 1457.96ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 73.5MB in the beginning and 115.8MB in the end (delta: -42.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 09:00:38,225 INFO L158 Benchmark]: Witness Printer took 2.27ms. Allocated memory is still 159.4MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 09:00:38,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory was 99.4MB in the beginning and 99.2MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.44ms. Allocated memory is still 130.0MB. Free memory was 93.0MB in the beginning and 84.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.94ms. Allocated memory is still 130.0MB. Free memory was 84.2MB in the beginning and 82.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.23ms. Allocated memory is still 130.0MB. Free memory was 82.9MB in the beginning and 81.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 184.44ms. Allocated memory is still 130.0MB. Free memory was 81.8MB in the beginning and 73.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1457.96ms. Allocated memory was 130.0MB in the beginning and 159.4MB in the end (delta: 29.4MB). Free memory was 73.5MB in the beginning and 115.8MB in the end (delta: -42.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.27ms. Allocated memory is still 159.4MB. Free memory is still 115.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function -1 * j + i and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 20 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax187 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf93 smp100 dnf100 smp100 tf110 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-18 09:00:38,237 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 [2023-02-18 09:00:38,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE