./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 c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/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-tmp.no-commuhash-c3fed41 [2021-12-19 17:17:34,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:17:34,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:17:34,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:17:34,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:17:34,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:17:34,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:17:34,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:17:34,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:17:34,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:17:34,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:17:34,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:17:34,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:17:34,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:17:34,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:17:34,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:17:34,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:17:34,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:17:34,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:17:34,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:17:34,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:17:34,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:17:35,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:17:35,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:17:35,005 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:17:35,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:17:35,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:17:35,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:17:35,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:17:35,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:17:35,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:17:35,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:17:35,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:17:35,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:17:35,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:17:35,012 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:17:35,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:17:35,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:17:35,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:17:35,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:17:35,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:17:35,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:17:35,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:17:35,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:17:35,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:17:35,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:17:35,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:17:35,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:17:35,056 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:17:35,056 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:17:35,056 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:17:35,056 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:17:35,057 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:17:35,057 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:17:35,058 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:17:35,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:17:35,058 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:17:35,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:17:35,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:17:35,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:17:35,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:17:35,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:17:35,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:17:35,059 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:17:35,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:17:35,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:17:35,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:17:35,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:17:35,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:17:35,060 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:17:35,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:17:35,061 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:17:35,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ac7230c5e382093d26c98e7b6016147f69412c389a30284fe416f8f9568f8d [2021-12-19 17:17:35,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:17:35,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:17:35,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:17:35,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:17:35,274 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:17:35,275 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex07.c [2021-12-19 17:17:35,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65cf38191/a243e6b93e0446ec9dbde83c94212f60/FLAG5cb86f608 [2021-12-19 17:17:35,683 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:17:35,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex07.c [2021-12-19 17:17:35,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65cf38191/a243e6b93e0446ec9dbde83c94212f60/FLAG5cb86f608 [2021-12-19 17:17:36,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65cf38191/a243e6b93e0446ec9dbde83c94212f60 [2021-12-19 17:17:36,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:17:36,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:17:36,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:17:36,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:17:36,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:17:36,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@236cf262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36, skipping insertion in model container [2021-12-19 17:17:36,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:17:36,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:17:36,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:17:36,233 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:17:36,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:17:36,257 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:17:36,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36 WrapperNode [2021-12-19 17:17:36,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:17:36,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:17:36,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:17:36,259 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:17:36,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,287 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2021-12-19 17:17:36,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:17:36,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:17:36,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:17:36,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:17:36,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:17:36,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:17:36,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:17:36,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:17:36,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (1/1) ... [2021-12-19 17:17:36,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:36,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:36,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 17:17:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:17:36,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:17:36,408 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:17:36,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:17:36,453 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:17:36,458 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:17:36,458 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:17:36,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:17:36 BoogieIcfgContainer [2021-12-19 17:17:36,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:17:36,461 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:17:36,461 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:17:36,463 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:17:36,464 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:17:36,464 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:17:36" (1/3) ... [2021-12-19 17:17:36,465 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42b3a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:17:36, skipping insertion in model container [2021-12-19 17:17:36,466 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:17:36,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:17:36" (2/3) ... [2021-12-19 17:17:36,466 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@42b3a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:17:36, skipping insertion in model container [2021-12-19 17:17:36,466 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:17:36,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:17:36" (3/3) ... [2021-12-19 17:17:36,467 INFO L388 chiAutomizerObserver]: Analyzing ICFG Ex07.c [2021-12-19 17:17:36,503 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:17:36,503 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:17:36,504 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:17:36,504 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:17:36,504 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:17:36,504 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:17:36,504 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:17:36,504 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:17:36,514 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) [2021-12-19 17:17:36,526 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:17:36,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:17:36,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:17:36,531 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:17:36,532 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:17:36,532 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:17:36,532 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) [2021-12-19 17:17:36,533 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-19 17:17:36,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:17:36,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:17:36,534 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:17:36,534 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:17:36,539 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 [2021-12-19 17:17:36,539 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 [2021-12-19 17:17:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:17:36,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:36,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657477273] [2021-12-19 17:17:36,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:36,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:36,602 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:36,615 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2021-12-19 17:17:36,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:36,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672834148] [2021-12-19 17:17:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:36,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:36,626 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:36,631 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:36,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:36,633 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2021-12-19 17:17:36,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:36,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543831767] [2021-12-19 17:17:36,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:36,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:36,640 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:36,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:36,645 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:36,694 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:17:36,695 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:17:36,695 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:17:36,695 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:17:36,696 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:17:36,696 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:36,696 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:17:36,696 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:17:36,696 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration1_Loop [2021-12-19 17:17:36,696 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:17:36,697 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:17:36,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:36,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:36,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:36,773 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:17:36,773 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:17:36,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:36,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:36,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:36,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 17:17:36,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:36,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:36,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:36,828 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: [] [2021-12-19 17:17:36,846 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 [2021-12-19 17:17:36,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:36,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:36,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:36,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 17:17:36,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:36,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:36,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:17:36,872 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:17:36,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-19 17:17:36,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:36,900 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:36,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 17:17:36,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:17:36,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:36,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-19 17:17:36,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:36,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:36,938 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:36,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 17:17:36,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:17:36,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:17:36,971 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:17:36,974 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 [2021-12-19 17:17:36,975 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:17:36,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:17:36,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:17:36,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:17:36,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:17:36,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:36,975 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:17:36,975 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:17:36,975 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex07.c_Iteration1_Loop [2021-12-19 17:17:36,975 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:17:36,975 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:17:36,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:36,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:36,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:17:37,026 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:17:37,030 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:17:37,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:37,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:37,032 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:37,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:17:37,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:17:37,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:17:37,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:17:37,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:17:37,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 17:17:37,057 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:17:37,059 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:17:37,075 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:17:37,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 17:17:37,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:37,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:37,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:37,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 17:17:37,097 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:17:37,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:17:37,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:17:37,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:17:37,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:17:37,108 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:17:37,108 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:17:37,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:17:37,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 17:17:37,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:37,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:37,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:37,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:17:37,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:17:37,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:17:37,171 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:17:37,171 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:17:37,171 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:17:37,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:17:37,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:17:37,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 17:17:37,189 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:17:37,192 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-19 17:17:37,192 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:17:37,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:17:37,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:17:37,240 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:17:37,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 17:17:37,241 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:17:37,241 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:17:37,242 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:17:37,242 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-19 17:17:37,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 17:17:37,260 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:17:37,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:17:37,299 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:17:37,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:17:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:17:37,310 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:17:37,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:17:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:17:37,346 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 [2021-12-19 17:17:37,347 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) [2021-12-19 17:17:37,374 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. [2021-12-19 17:17:37,375 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 [2021-12-19 17:17:37,379 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) [2021-12-19 17:17:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-19 17:17:37,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-19 17:17:37,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:17:37,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-19 17:17:37,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:17:37,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-19 17:17:37,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:17:37,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 35 transitions. [2021-12-19 17:17:37,384 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-19 17:17:37,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 14 states and 21 transitions. [2021-12-19 17:17:37,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-19 17:17:37,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-19 17:17:37,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2021-12-19 17:17:37,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:17:37,389 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2021-12-19 17:17:37,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2021-12-19 17:17:37,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-12-19 17:17:37,407 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) [2021-12-19 17:17:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-12-19 17:17:37,408 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-19 17:17:37,408 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-19 17:17:37,408 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:17:37,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-12-19 17:17:37,410 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-12-19 17:17:37,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:17:37,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:17:37,411 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:17:37,411 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:17:37,411 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 [2021-12-19 17:17:37,411 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 [2021-12-19 17:17:37,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:17:37,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:37,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379769379] [2021-12-19 17:17:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:37,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:37,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:37,420 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:37,424 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:37,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:37,424 INFO L85 PathProgramCache]: Analyzing trace with hash 45860, now seen corresponding path program 1 times [2021-12-19 17:17:37,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:37,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287928659] [2021-12-19 17:17:37,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:37,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:37,430 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:37,432 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:37,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:17:37,432 INFO L85 PathProgramCache]: Analyzing trace with hash 889694493, now seen corresponding path program 1 times [2021-12-19 17:17:37,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:17:37,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568945458] [2021-12-19 17:17:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:17:37,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:17:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:37,440 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:17:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:17:37,442 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:17:37,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:17:37 BoogieIcfgContainer [2021-12-19 17:17:37,482 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:17:37,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:17:37,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:17:37,483 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:17:37,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:17:36" (3/4) ... [2021-12-19 17:17:37,486 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 17:17:37,522 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 17:17:37,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:17:37,523 INFO L158 Benchmark]: Toolchain (without parser) took 1413.95ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 62.6MB in the beginning and 47.4MB in the end (delta: 15.2MB). Peak memory consumption was 51.6MB. Max. memory is 16.1GB. [2021-12-19 17:17:37,524 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:17:37,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.30ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 62.2MB in the beginning and 108.8MB in the end (delta: -46.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-19 17:17:37,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.72ms. Allocated memory is still 130.0MB. Free memory was 108.8MB in the beginning and 107.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:17:37,526 INFO L158 Benchmark]: Boogie Preprocessor took 14.81ms. Allocated memory is still 130.0MB. Free memory was 107.4MB in the beginning and 106.8MB in the end (delta: 636.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:17:37,526 INFO L158 Benchmark]: RCFGBuilder took 155.58ms. Allocated memory is still 130.0MB. Free memory was 106.8MB in the beginning and 97.7MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-19 17:17:37,527 INFO L158 Benchmark]: BuchiAutomizer took 1021.61ms. Allocated memory is still 130.0MB. Free memory was 97.7MB in the beginning and 48.9MB in the end (delta: 48.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2021-12-19 17:17:37,529 INFO L158 Benchmark]: Witness Printer took 39.56ms. Allocated memory is still 130.0MB. Free memory was 48.9MB in the beginning and 47.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:17:37,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 92.3MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.30ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 62.2MB in the beginning and 108.8MB in the end (delta: -46.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.72ms. Allocated memory is still 130.0MB. Free memory was 108.8MB in the beginning and 107.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.81ms. Allocated memory is still 130.0MB. Free memory was 107.4MB in the beginning and 106.8MB in the end (delta: 636.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 155.58ms. Allocated memory is still 130.0MB. Free memory was 106.8MB in the beginning and 97.7MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 1021.61ms. Allocated memory is still 130.0MB. Free memory was 97.7MB in the beginning and 48.9MB in the end (delta: 48.9MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 39.56ms. Allocated memory is still 130.0MB. Free memory was 48.9MB in the beginning and 47.4MB in the end (delta: 1.5MB). 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 0.1s. 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: 45ms 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@378e4555=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! [2021-12-19 17:17:37,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 17:17:37,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)