./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-nla/cohencu1-both-nt.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 574ddb4e 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-nla/cohencu1-both-nt.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 ca80e9b36e5fc58b8f30c1bb1c05df2fc99c88b9aad13b3e482ed10946a6c2f8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-19 00:18:35,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-19 00:18:35,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-19 00:18:35,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-19 00:18:35,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-19 00:18:35,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-19 00:18:35,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-19 00:18:35,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-19 00:18:35,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-19 00:18:35,297 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-19 00:18:35,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-19 00:18:35,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-19 00:18:35,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-19 00:18:35,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-19 00:18:35,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-19 00:18:35,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-19 00:18:35,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-19 00:18:35,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-19 00:18:35,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-19 00:18:35,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-19 00:18:35,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-19 00:18:35,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-19 00:18:35,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-19 00:18:35,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-19 00:18:35,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-19 00:18:35,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-19 00:18:35,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-19 00:18:35,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-19 00:18:35,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-19 00:18:35,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-19 00:18:35,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-19 00:18:35,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-19 00:18:35,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-19 00:18:35,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-19 00:18:35,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-19 00:18:35,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-19 00:18:35,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-19 00:18:35,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-19 00:18:35,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-19 00:18:35,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-19 00:18:35,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-19 00:18:35,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-19 00:18:35,346 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-19 00:18:35,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-19 00:18:35,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-19 00:18:35,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-19 00:18:35,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-19 00:18:35,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-19 00:18:35,349 INFO L138 SettingsManager]: * Use SBE=true [2023-02-19 00:18:35,349 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-19 00:18:35,350 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-19 00:18:35,350 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-19 00:18:35,350 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-19 00:18:35,351 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-19 00:18:35,351 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-19 00:18:35,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-19 00:18:35,351 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-19 00:18:35,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-19 00:18:35,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-19 00:18:35,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-19 00:18:35,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-19 00:18:35,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-19 00:18:35,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-19 00:18:35,352 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-19 00:18:35,352 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-19 00:18:35,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-19 00:18:35,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-19 00:18:35,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-19 00:18:35,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-19 00:18:35,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-19 00:18:35,354 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-19 00:18:35,354 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca80e9b36e5fc58b8f30c1bb1c05df2fc99c88b9aad13b3e482ed10946a6c2f8 [2023-02-19 00:18:35,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-19 00:18:35,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-19 00:18:35,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-19 00:18:35,577 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-19 00:18:35,577 INFO L275 PluginConnector]: CDTParser initialized [2023-02-19 00:18:35,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-nla/cohencu1-both-nt.c [2023-02-19 00:18:36,534 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-19 00:18:36,686 INFO L351 CDTParser]: Found 1 translation units. [2023-02-19 00:18:36,686 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-nla/cohencu1-both-nt.c [2023-02-19 00:18:36,691 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c252bf5/9f48a6ba608345d6b47cec606eedb39b/FLAG45dc43cd0 [2023-02-19 00:18:36,705 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3c252bf5/9f48a6ba608345d6b47cec606eedb39b [2023-02-19 00:18:36,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-19 00:18:36,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-19 00:18:36,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-19 00:18:36,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-19 00:18:36,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-19 00:18:36,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0de624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36, skipping insertion in model container [2023-02-19 00:18:36,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-19 00:18:36,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-19 00:18:36,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:18:36,826 INFO L203 MainTranslator]: Completed pre-run [2023-02-19 00:18:36,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-19 00:18:36,843 INFO L208 MainTranslator]: Completed translation [2023-02-19 00:18:36,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36 WrapperNode [2023-02-19 00:18:36,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-19 00:18:36,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-19 00:18:36,845 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-19 00:18:36,845 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-19 00:18:36,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,864 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2023-02-19 00:18:36,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-19 00:18:36,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-19 00:18:36,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-19 00:18:36,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-19 00:18:36,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-19 00:18:36,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-19 00:18:36,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-19 00:18:36,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-19 00:18:36,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (1/1) ... [2023-02-19 00:18:36,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:36,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:36,895 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) [2023-02-19 00:18:36,907 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 [2023-02-19 00:18:36,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-19 00:18:36,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-19 00:18:36,966 INFO L235 CfgBuilder]: Building ICFG [2023-02-19 00:18:36,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-19 00:18:37,046 INFO L276 CfgBuilder]: Performing block encoding [2023-02-19 00:18:37,052 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-19 00:18:37,052 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-19 00:18:37,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:18:37 BoogieIcfgContainer [2023-02-19 00:18:37,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-19 00:18:37,055 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-19 00:18:37,055 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-19 00:18:37,057 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-19 00:18:37,058 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:18:37,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.02 12:18:36" (1/3) ... [2023-02-19 00:18:37,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f816988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:18:37, skipping insertion in model container [2023-02-19 00:18:37,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:18:37,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 12:18:36" (2/3) ... [2023-02-19 00:18:37,059 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f816988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.02 12:18:37, skipping insertion in model container [2023-02-19 00:18:37,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-19 00:18:37,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:18:37" (3/3) ... [2023-02-19 00:18:37,060 INFO L332 chiAutomizerObserver]: Analyzing ICFG cohencu1-both-nt.c [2023-02-19 00:18:37,106 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-19 00:18:37,107 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-19 00:18:37,107 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-19 00:18:37,107 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-19 00:18:37,107 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-19 00:18:37,107 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-19 00:18:37,108 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-19 00:18:37,108 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-19 00:18:37,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:18:37,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:18:37,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:18:37,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:18:37,126 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:18:37,126 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-19 00:18:37,126 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-19 00:18:37,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-19 00:18:37,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-19 00:18:37,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-19 00:18:37,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-19 00:18:37,128 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-19 00:18:37,128 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-19 00:18:37,133 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~a~0#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~a~0#1;havoc main_~n~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~n~0#1 := 0;main_~x~0#1 := 0;main_~y~0#1 := 1;main_~z~0#1 := 6; 5#L33-2true [2023-02-19 00:18:37,134 INFO L750 eck$LassoCheckResult]: Loop: 5#L33-2true assume !!(main_~z~0#1 <= 6 + 6 * main_~n~0#1);main_~n~0#1 := 1 + main_~n~0#1;main_~x~0#1 := main_~x~0#1 + main_~y~0#1;main_~y~0#1 := main_~y~0#1 + main_~z~0#1;main_~z~0#1 := 6 + main_~z~0#1; 5#L33-2true [2023-02-19 00:18:37,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:18:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-19 00:18:37,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:18:37,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417298515] [2023-02-19 00:18:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:18:37,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:18:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:18:37,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:18:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:18:37,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:18:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:18:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-02-19 00:18:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:18:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508612238] [2023-02-19 00:18:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:18:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:18:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:18:37,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:18:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:18:37,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:18:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-19 00:18:37,271 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-19 00:18:37,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-19 00:18:37,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790414267] [2023-02-19 00:18:37,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-19 00:18:37,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-19 00:18:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:18:37,281 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-19 00:18:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-19 00:18:37,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-19 00:18:37,319 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:18:37,320 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:18:37,323 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:18:37,323 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:18:37,323 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:18:37,323 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,323 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:18:37,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:18:37,324 INFO L133 ssoRankerPreferences]: Filename of dumped script: cohencu1-both-nt.c_Iteration1_Loop [2023-02-19 00:18:37,324 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:18:37,324 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:18:37,337 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:18:37,353 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:18:37,354 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:18:37,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:37,358 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) [2023-02-19 00:18:37,359 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 [2023-02-19 00:18:37,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:18:37,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:18:37,426 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 [2023-02-19 00:18:37,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:37,441 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) [2023-02-19 00:18:37,444 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 [2023-02-19 00:18:37,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:18:37,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:18:37,588 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:18:37,589 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~n~0#1=2, ULTIMATE.start_main_~z~0#1=7, ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~n~0#1=2, ULTIMATE.start_main_~z~0#1=7, ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-8, ULTIMATE.start_main_~n~0#1=1, ULTIMATE.start_main_~z~0#1=6, ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~x~0#1=1, ULTIMATE.start_main_~n~0#1=0, ULTIMATE.start_main_~z~0#1=0, ULTIMATE.start_main_~y~0#1=6}, {ULTIMATE.start_main_~x~0#1=6, ULTIMATE.start_main_~n~0#1=0, ULTIMATE.start_main_~z~0#1=0, ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 1, 1] Nus: [1, 1] [2023-02-19 00:18:37,594 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 [2023-02-19 00:18:37,597 INFO L210 LassoAnalysis]: Preferences: [2023-02-19 00:18:37,598 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-19 00:18:37,598 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-19 00:18:37,598 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-19 00:18:37,598 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-19 00:18:37,598 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,598 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-19 00:18:37,598 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-19 00:18:37,598 INFO L133 ssoRankerPreferences]: Filename of dumped script: cohencu1-both-nt.c_Iteration1_Lasso [2023-02-19 00:18:37,599 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-19 00:18:37,599 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-19 00:18:37,600 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:18:37,603 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:18:37,604 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:18:37,605 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-19 00:18:37,608 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-19 00:18:37,609 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-19 00:18:37,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:37,610 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) [2023-02-19 00:18:37,612 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 [2023-02-19 00:18:37,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:18:37,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:18:37,636 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 [2023-02-19 00:18:37,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:37,639 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) [2023-02-19 00:18:37,641 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 [2023-02-19 00:18:37,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-19 00:18:37,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:18:37,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:18:37,782 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=0, ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~n~0#1=0, ULTIMATE.start_main_~z~0#1=0} Honda state: {ULTIMATE.start_main_~y~0#1=1, ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~n~0#1=0, ULTIMATE.start_main_~z~0#1=6} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0, ULTIMATE.start_main_~x~0#1=-5, ULTIMATE.start_main_~n~0#1=1, ULTIMATE.start_main_~z~0#1=6}, {ULTIMATE.start_main_~y~0#1=6, ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~n~0#1=0, ULTIMATE.start_main_~z~0#1=0}, {ULTIMATE.start_main_~y~0#1=0, ULTIMATE.start_main_~x~0#1=6, ULTIMATE.start_main_~n~0#1=0, ULTIMATE.start_main_~z~0#1=0}] Lambdas: [1, 1, 1] Nus: [1, 1] [2023-02-19 00:18:37,786 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 [2023-02-19 00:18:37,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:37,788 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) [2023-02-19 00:18:37,793 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 [2023-02-19 00:18:37,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:18:37,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:18:37,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:18:37,802 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:18:37,809 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-02-19 00:18:37,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:37,810 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) [2023-02-19 00:18:37,812 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 [2023-02-19 00:18:37,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:18:37,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:18:37,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:18:37,827 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:18:37,833 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 [2023-02-19 00:18:37,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-19 00:18:37,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-19 00:18:37,855 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) [2023-02-19 00:18:37,856 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 [2023-02-19 00:18:37,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-19 00:18:37,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-19 00:18:37,879 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-19 00:18:37,879 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=0} Honda state: {ULTIMATE.start_main_~a~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-19 00:18:37,884 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 [2023-02-19 00:18:37,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.02 12:18:37 BoogieIcfgContainer [2023-02-19 00:18:37,898 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-19 00:18:37,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-19 00:18:37,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-19 00:18:37,899 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-19 00:18:37,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 12:18:37" (3/4) ... [2023-02-19 00:18:37,901 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-19 00:18:37,924 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-19 00:18:37,924 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-19 00:18:37,925 INFO L158 Benchmark]: Toolchain (without parser) took 1216.95ms. Allocated memory was 136.3MB in the beginning and 209.7MB in the end (delta: 73.4MB). Free memory was 99.6MB in the beginning and 177.2MB in the end (delta: -77.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:18:37,926 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 136.3MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:18:37,926 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.77ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 90.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-19 00:18:37,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.62ms. Allocated memory is still 136.3MB. Free memory was 90.5MB in the beginning and 89.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:18:37,927 INFO L158 Benchmark]: Boogie Preprocessor took 10.30ms. Allocated memory is still 136.3MB. Free memory was 89.0MB in the beginning and 88.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-19 00:18:37,927 INFO L158 Benchmark]: RCFGBuilder took 178.31ms. Allocated memory is still 136.3MB. Free memory was 88.0MB in the beginning and 79.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-19 00:18:37,928 INFO L158 Benchmark]: BuchiAutomizer took 843.66ms. Allocated memory was 136.3MB in the beginning and 209.7MB in the end (delta: 73.4MB). Free memory was 79.1MB in the beginning and 178.3MB in the end (delta: -99.1MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2023-02-19 00:18:37,928 INFO L158 Benchmark]: Witness Printer took 25.59ms. Allocated memory is still 209.7MB. Free memory was 178.3MB in the beginning and 177.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-19 00:18:37,929 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 136.3MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132.77ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 90.5MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.62ms. Allocated memory is still 136.3MB. Free memory was 90.5MB in the beginning and 89.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.30ms. Allocated memory is still 136.3MB. Free memory was 89.0MB in the beginning and 88.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 178.31ms. Allocated memory is still 136.3MB. Free memory was 88.0MB in the beginning and 79.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 843.66ms. Allocated memory was 136.3MB in the beginning and 209.7MB in the end (delta: 73.4MB). Free memory was 79.1MB in the beginning and 178.3MB in the end (delta: -99.1MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * Witness Printer took 25.59ms. Allocated memory is still 209.7MB. Free memory was 178.3MB in the beginning and 177.2MB in the end (delta: 1.0MB). 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital35 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf91 smp100 dnf100 smp100 tf102 neg100 sie100 LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 33]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {y=0, x=0, a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4584a972=0, n=0, z=0} State at position 1 is {y=1, x=0, a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4584a972=0, n=0, z=6} For i>1, the state at position i is {y=1 + sum_{k=0}^i 6 + 6*k, x=0 + sum_{k=0}^i -5 + 6 + 6*k + 6*binomial(k, 2), a=0 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4584a972=0 + sum_{k=0}^i 0, n=0 + sum_{k=0}^i 1, z=6 + sum_{k=0}^i 6} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 3GEVs Lambdas: [1, 1, 1] Mus: [1, 1] - NonterminatingLassoResult [Line: 33]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L26] int a, n, x, y, z; [L27] a = __VERIFIER_nondet_int() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 Loop: [L33] COND TRUE z <= 6 * n + 6 [L41] n = n + 1 [L42] x = x + y [L43] y = y + z [L44] z = z + 6 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-19 00:18:37,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)