./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex07.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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/Ex07.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 e1ac7230c5e382093d26c98e7b6016147f69412c389a30284fe416f8f9568f8d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 21:57:26,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:57:26,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:57:26,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:57:26,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:57:26,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:57:26,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:57:26,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:57:26,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:57:26,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:57:26,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:57:26,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:57:26,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:57:26,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:57:26,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:57:26,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:57:26,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:57:26,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:57:26,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:57:26,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:57:26,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:57:26,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:57:26,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:57:26,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:57:26,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:57:26,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:57:26,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:57:26,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:57:26,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:57:26,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:57:26,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:57:26,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:57:26,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:57:26,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:57:26,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:57:26,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:57:26,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:57:26,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:57:26,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:57:26,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:57:26,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:57:26,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 21:57:26,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:57:26,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:57:26,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:57:26,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:57:26,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:57:26,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:57:26,951 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:57:26,951 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:57:26,952 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:57:26,952 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:57:26,952 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:57:26,952 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:57:26,952 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:57:26,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:57:26,953 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:57:26,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:57:26,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:57:26,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:57:26,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:57:26,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:57:26,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:57:26,954 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:57:26,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:57:26,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:57:26,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:57:26,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:57:26,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:57:26,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:57:26,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:57:26,956 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:57:26,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ac7230c5e382093d26c98e7b6016147f69412c389a30284fe416f8f9568f8d [2021-12-21 21:57:27,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:57:27,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:57:27,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:57:27,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:57:27,141 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:57:27,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex07.c [2021-12-21 21:57:27,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda42aba3/5164b490330645359ddc76fa7d5149be/FLAG5574b6976 [2021-12-21 21:57:27,527 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:57:27,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex07.c [2021-12-21 21:57:27,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda42aba3/5164b490330645359ddc76fa7d5149be/FLAG5574b6976 [2021-12-21 21:57:27,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda42aba3/5164b490330645359ddc76fa7d5149be [2021-12-21 21:57:27,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:57:27,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:57:27,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:57:27,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:57:27,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:57:27,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:57:27" (1/1) ... [2021-12-21 21:57:27,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e5839c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:27, skipping insertion in model container [2021-12-21 21:57:27,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:57:27" (1/1) ... [2021-12-21 21:57:27,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:57:28,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:57:28,109 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:57:28,112 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:57:28,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:57:28,134 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:57:28,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28 WrapperNode [2021-12-21 21:57:28,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:57:28,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:57:28,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:57:28,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:57:28,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,154 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2021-12-21 21:57:28,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:57:28,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:57:28,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:57:28,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:57:28,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:57:28,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:57:28,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:57:28,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:57:28,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (1/1) ... [2021-12-21 21:57:28,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:28,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:28,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-21 21:57:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:57:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:57:28,345 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:57:28,347 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:57:28,389 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:57:28,394 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:57:28,395 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 21:57:28,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:28 BoogieIcfgContainer [2021-12-21 21:57:28,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:57:28,398 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:57:28,398 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:57:28,400 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:57:28,401 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:57:28,401 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:57:27" (1/3) ... [2021-12-21 21:57:28,402 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4803eb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:57:28, skipping insertion in model container [2021-12-21 21:57:28,403 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:57:28,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:57:28" (2/3) ... [2021-12-21 21:57:28,403 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4803eb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:57:28, skipping insertion in model container [2021-12-21 21:57:28,403 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:57:28,403 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:28" (3/3) ... [2021-12-21 21:57:28,404 INFO L388 chiAutomizerObserver]: Analyzing ICFG Ex07.c [2021-12-21 21:57:28,434 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:57:28,435 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:57:28,435 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:57:28,435 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:57:28,435 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:57:28,435 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:57:28,435 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:57:28,435 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:57:28,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:57:28,456 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 21:57:28,456 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:57:28,456 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:57:28,460 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:57:28,461 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:57:28,461 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:57:28,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:57:28,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 21:57:28,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:57:28,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:57:28,462 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 21:57:28,462 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:57:28,467 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 4#L13-1true [2021-12-21 21:57:28,467 INFO L793 eck$LassoCheckResult]: Loop: 4#L13-1true assume !!(0 != ~unnamed0~0~true); 8#L10true assume !(main_~i~0#1 > 0); 6#L10-2true assume main_~i~0#1 < 0;main_~i~0#1 := 1 + main_~i~0#1; 4#L13-1true [2021-12-21 21:57:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 21:57:28,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:28,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376804362] [2021-12-21 21:57:28,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:28,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:28,534 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:28,545 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:28,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2021-12-21 21:57:28,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:28,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245861981] [2021-12-21 21:57:28,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:28,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:28,555 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:28,560 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:28,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2021-12-21 21:57:28,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:28,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099471283] [2021-12-21 21:57:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:28,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:28,567 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:28,571 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:28,647 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:57:28,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:57:28,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:57:28,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:57:28,648 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:57:28,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:57:28,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:57:28,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration1_Loop [2021-12-21 21:57:28,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:57:28,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:57:28,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:57:28,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:57:28,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:57:28,722 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:57:28,722 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:57:28,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:28,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:28,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-21 21:57:28,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:57:28,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:57:28,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:57:28,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:57:28,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-21 21:57:28,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:28,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:28,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-21 21:57:28,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:57:28,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:57:28,828 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:57:28,828 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:57:28,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-21 21:57:28,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:28,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:28,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-21 21:57:28,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:57:28,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:57:28,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-21 21:57:28,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:28,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:28,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-21 21:57:28,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:57:28,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:57:28,922 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:57:28,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-21 21:57:28,925 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:57:28,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:57:28,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:57:28,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:57:28,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:57:28,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:57:28,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:57:28,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration1_Loop [2021-12-21 21:57:28,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:57:28,926 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:57:28,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:57:28,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:57:28,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:57:28,988 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:57:28,991 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:57:28,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:28,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:28,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:29,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-21 21:57:29,001 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:57:29,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:57:29,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:57:29,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:57:29,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:57:29,011 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 21:57:29,012 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 21:57:29,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:57:29,037 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 [2021-12-21 21:57:29,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:29,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:29,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-21 21:57:29,041 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:57:29,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:57:29,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:57:29,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:57:29,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:57:29,049 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-21 21:57:29,049 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-21 21:57:29,059 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:57:29,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-21 21:57:29,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:29,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:29,075 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:29,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-21 21:57:29,078 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:57:29,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:57:29,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:57:29,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:57:29,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:57:29,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:57:29,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:57:29,085 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:57:29,111 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:57:29,124 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 21:57:29,124 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 21:57:29,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:57:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:57:29,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:57:29,169 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:57:29,169 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:57:29,169 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:57:29,170 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-21 21:57:29,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-21 21:57:29,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-21 21:57:29,190 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:57:29,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:57:29,211 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 21:57:29,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:57:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:57:29,219 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:57:29,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:57:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:57:29,242 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-21 21:57:29,243 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:57:29,265 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 22 states and 35 transitions. Complement of second has 6 states. [2021-12-21 21:57:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-21 21:57:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:57:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-21 21:57:29,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-21 21:57:29,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:57:29,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 21:57:29,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:57:29,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-21 21:57:29,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:57:29,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 35 transitions. [2021-12-21 21:57:29,273 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-21 21:57:29,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 21 transitions. [2021-12-21 21:57:29,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-21 21:57:29,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-21 21:57:29,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2021-12-21 21:57:29,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:57:29,276 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-12-21 21:57:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2021-12-21 21:57:29,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-21 21:57:29,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:57:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-12-21 21:57:29,291 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-21 21:57:29,291 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-21 21:57:29,291 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 21:57:29,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-12-21 21:57:29,292 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-21 21:57:29,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:57:29,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:57:29,292 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-21 21:57:29,292 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:57:29,292 INFO L791 eck$LassoCheckResult]: Stem: 77#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 78#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 81#L13-1 assume !!(0 != ~unnamed0~0~true); 71#L10 [2021-12-21 21:57:29,292 INFO L793 eck$LassoCheckResult]: Loop: 71#L10 assume !(main_~i~0#1 > 0); 74#L10-2 assume !(main_~i~0#1 < 0); 70#L13-1 assume !!(0 != ~unnamed0~0~true); 71#L10 [2021-12-21 21:57:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-21 21:57:29,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:29,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369816995] [2021-12-21 21:57:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:29,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:29,311 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:29,312 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:29,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:29,313 INFO L85 PathProgramCache]: Analyzing trace with hash 45860, now seen corresponding path program 1 times [2021-12-21 21:57:29,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:29,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770323298] [2021-12-21 21:57:29,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:29,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:29,315 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:29,317 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:57:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash 889694493, now seen corresponding path program 1 times [2021-12-21 21:57:29,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:57:29,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78533227] [2021-12-21 21:57:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:57:29,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:57:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:29,320 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:57:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:57:29,322 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:57:29,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 09:57:29 BoogieIcfgContainer [2021-12-21 21:57:29,346 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 21:57:29,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 21:57:29,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 21:57:29,347 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 21:57:29,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:57:28" (3/4) ... [2021-12-21 21:57:29,349 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-21 21:57:29,378 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 21:57:29,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 21:57:29,379 INFO L158 Benchmark]: Toolchain (without parser) took 1393.51ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 83.5MB in the beginning and 102.1MB in the end (delta: -18.6MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2021-12-21 21:57:29,380 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:57:29,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.22ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 83.2MB in the beginning and 119.2MB in the end (delta: -36.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 21:57:29,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.18ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 117.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:57:29,381 INFO L158 Benchmark]: Boogie Preprocessor took 12.26ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 116.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:57:29,381 INFO L158 Benchmark]: RCFGBuilder took 229.35ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 109.1MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-21 21:57:29,382 INFO L158 Benchmark]: BuchiAutomizer took 948.47ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 104.2MB in the end (delta: 4.6MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2021-12-21 21:57:29,382 INFO L158 Benchmark]: Witness Printer took 32.15ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 21:57:29,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.22ms. Allocated memory was 109.1MB in the beginning and 142.6MB in the end (delta: 33.6MB). Free memory was 83.2MB in the beginning and 119.2MB in the end (delta: -36.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.18ms. Allocated memory is still 142.6MB. Free memory was 119.2MB in the beginning and 117.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.26ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 116.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 229.35ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 109.1MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 948.47ms. Allocated memory is still 142.6MB. Free memory was 108.7MB in the beginning and 104.2MB in the end (delta: 4.6MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Witness Printer took 32.15ms. Allocated memory is still 142.6MB. Free memory was 104.2MB in the beginning and 102.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 4 locations. The remainder module has 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 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 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 3 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30755a64=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE \read(true) Loop: [L10] COND FALSE !(i > 0) [L13] COND FALSE !(i < 0) [L9] COND TRUE \read(true) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-21 21:57:29,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-21 21:57:29,629 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)