./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Ex06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c 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/Ex06.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 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:10:24,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:10:24,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:10:24,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:10:24,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:10:24,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:10:24,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:10:24,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:10:24,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:10:24,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:10:24,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:10:24,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:10:24,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:10:24,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:10:24,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:10:24,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:10:24,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:10:24,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:10:24,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:10:24,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:10:24,234 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:10:24,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:10:24,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:10:24,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:10:24,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:10:24,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:10:24,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:10:24,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:10:24,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:10:24,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:10:24,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:10:24,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:10:24,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:10:24,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:10:24,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:10:24,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:10:24,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:10:24,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:10:24,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:10:24,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:10:24,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:10:24,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:10:24,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:10:24,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:10:24,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:10:24,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:10:24,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:10:24,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:10:24,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:10:24,265 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:10:24,265 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:10:24,265 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:10:24,266 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:10:24,266 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:10:24,266 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:10:24,266 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:10:24,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:10:24,266 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:10:24,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:10:24,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:10:24,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:10:24,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:10:24,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:10:24,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:10:24,267 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:10:24,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:10:24,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:10:24,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:10:24,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:10:24,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:10:24,268 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:10:24,269 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:10:24,269 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e66e5d0ac00f8e474147a7ee8b0260ea4ced8ccde7952ff642446632cdde4c3 [2022-07-13 03:10:24,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:10:24,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:10:24,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:10:24,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:10:24,452 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:10:24,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Ex06.c [2022-07-13 03:10:24,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20edeff44/2877a1fa25eb4dd68b8a117571c3a143/FLAGa12401b1c [2022-07-13 03:10:24,824 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:10:24,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Ex06.c [2022-07-13 03:10:24,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20edeff44/2877a1fa25eb4dd68b8a117571c3a143/FLAGa12401b1c [2022-07-13 03:10:24,837 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20edeff44/2877a1fa25eb4dd68b8a117571c3a143 [2022-07-13 03:10:24,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:10:24,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:10:24,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:10:24,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:10:24,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:10:24,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:24,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c47d5c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24, skipping insertion in model container [2022-07-13 03:10:24,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:24,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:10:24,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:10:24,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:10:24,971 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:10:24,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:10:24,988 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:10:24,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24 WrapperNode [2022-07-13 03:10:24,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:10:24,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:10:24,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:10:24,990 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:10:24,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,012 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2022-07-13 03:10:25,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:10:25,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:10:25,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:10:25,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:10:25,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:10:25,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:10:25,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:10:25,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:10:25,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (1/1) ... [2022-07-13 03:10:25,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,048 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) [2022-07-13 03:10:25,066 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 [2022-07-13 03:10:25,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:10:25,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:10:25,118 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:10:25,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:10:25,166 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:10:25,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:10:25,171 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 03:10:25,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:25 BoogieIcfgContainer [2022-07-13 03:10:25,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:10:25,173 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:10:25,173 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:10:25,176 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:10:25,176 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:25,176 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:10:24" (1/3) ... [2022-07-13 03:10:25,177 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f2415c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:10:25, skipping insertion in model container [2022-07-13 03:10:25,177 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:25,177 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:24" (2/3) ... [2022-07-13 03:10:25,178 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4f2415c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:10:25, skipping insertion in model container [2022-07-13 03:10:25,178 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:25,180 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:25" (3/3) ... [2022-07-13 03:10:25,182 INFO L354 chiAutomizerObserver]: Analyzing ICFG Ex06.c [2022-07-13 03:10:25,218 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:10:25,218 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:10:25,218 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:10:25,218 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:10:25,218 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:10:25,218 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:10:25,219 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:10:25,219 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:10:25,221 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) [2022-07-13 03:10:25,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:25,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:25,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:25,234 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:10:25,234 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:25,234 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:10:25,234 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) [2022-07-13 03:10:25,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:25,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:25,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:25,235 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:10:25,235 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:25,239 INFO L752 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L13-1true [2022-07-13 03:10:25,239 INFO L754 eck$LassoCheckResult]: Loop: 3#L13-1true assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 7#L10true assume !(main_~i~0#1 > 0); 5#L10-2true assume main_~i~0#1 < 0;main_~i~0#1 := 1 + main_~i~0#1; 3#L13-1true [2022-07-13 03:10:25,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:25,243 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:10:25,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:25,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851987068] [2022-07-13 03:10:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:25,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:25,294 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:25,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:25,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash 40878, now seen corresponding path program 1 times [2022-07-13 03:10:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:25,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664761891] [2022-07-13 03:10:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:25,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:25,314 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:25,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:25,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:25,320 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2022-07-13 03:10:25,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:25,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150962043] [2022-07-13 03:10:25,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:25,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:25,325 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:25,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:25,398 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:25,399 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:25,399 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:25,399 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:25,399 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:25,399 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,399 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:25,400 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:25,400 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration1_Loop [2022-07-13 03:10:25,400 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:25,400 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:25,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:25,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:25,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:25,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:25,517 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:25,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,520 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) [2022-07-13 03:10:25,521 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 [2022-07-13 03:10:25,522 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:25,522 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:25,543 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:25,543 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: [] [2022-07-13 03:10:25,561 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 [2022-07-13 03:10:25,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,563 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) [2022-07-13 03:10:25,563 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 [2022-07-13 03:10:25,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:25,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:25,583 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:25,584 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: [] [2022-07-13 03:10:25,601 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 [2022-07-13 03:10:25,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,603 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) [2022-07-13 03:10:25,607 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 [2022-07-13 03:10:25,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:25,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:25,630 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 [2022-07-13 03:10:25,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,631 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) [2022-07-13 03:10:25,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:25,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:25,648 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 [2022-07-13 03:10:25,667 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:25,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:25,690 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:25,690 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:25,690 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:25,690 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:25,690 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:25,690 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,690 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:25,690 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:25,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex06.c_Iteration1_Loop [2022-07-13 03:10:25,691 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:25,691 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:25,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:25,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:25,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:25,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:25,752 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:25,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,755 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) [2022-07-13 03:10:25,756 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 [2022-07-13 03:10:25,772 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 [2022-07-13 03:10:25,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:25,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:25,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:25,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:25,782 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:25,782 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:25,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:25,820 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 [2022-07-13 03:10:25,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,822 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) [2022-07-13 03:10:25,823 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 [2022-07-13 03:10:25,824 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 [2022-07-13 03:10:25,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:25,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:25,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:25,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:25,837 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:25,837 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:25,847 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:25,865 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 [2022-07-13 03:10:25,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,867 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) [2022-07-13 03:10:25,868 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 [2022-07-13 03:10:25,869 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 [2022-07-13 03:10:25,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:25,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:25,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:25,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:25,876 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:25,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:25,877 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:25,893 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:25,908 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-13 03:10:25,908 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:10:25,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:25,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:25,910 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) [2022-07-13 03:10:25,912 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 [2022-07-13 03:10:25,913 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:25,913 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:25,913 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:25,914 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 [] [2022-07-13 03:10:25,930 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 [2022-07-13 03:10:25,933 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:25,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:25,968 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:25,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:25,983 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:10:25,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:26,009 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 [2022-07-13 03:10:26,010 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) [2022-07-13 03:10:26,036 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 31 states and 45 transitions. Complement of second has 6 states. [2022-07-13 03:10:26,037 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 [2022-07-13 03:10:26,040 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) [2022-07-13 03:10:26,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-07-13 03:10:26,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-13 03:10:26,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:26,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-13 03:10:26,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:26,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-13 03:10:26,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:26,043 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 45 transitions. [2022-07-13 03:10:26,045 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:10:26,047 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 21 transitions. [2022-07-13 03:10:26,048 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-13 03:10:26,048 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-13 03:10:26,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 21 transitions. [2022-07-13 03:10:26,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:26,049 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2022-07-13 03:10:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 21 transitions. [2022-07-13 03:10:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-07-13 03:10:26,067 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) [2022-07-13 03:10:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-07-13 03:10:26,068 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-13 03:10:26,068 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-13 03:10:26,068 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:10:26,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-07-13 03:10:26,068 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:10:26,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:26,068 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:26,069 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 03:10:26,069 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:26,069 INFO L752 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 87#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; 90#L13-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 80#L10 [2022-07-13 03:10:26,069 INFO L754 eck$LassoCheckResult]: Loop: 80#L10 assume !(main_~i~0#1 > 0); 83#L10-2 assume !(main_~i~0#1 < 0); 79#L13-1 assume !!(main_~i~0#1 >= -5 && main_~i~0#1 <= 5); 80#L10 [2022-07-13 03:10:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-13 03:10:26,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:26,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937212464] [2022-07-13 03:10:26,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:26,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:26,074 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:26,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash 45860, now seen corresponding path program 1 times [2022-07-13 03:10:26,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:26,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991418601] [2022-07-13 03:10:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:26,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:26,080 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:26,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash 889694493, now seen corresponding path program 1 times [2022-07-13 03:10:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:26,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917874307] [2022-07-13 03:10:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:26,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:26,085 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:26,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:26,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:10:26 BoogieIcfgContainer [2022-07-13 03:10:26,121 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:10:26,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:10:26,121 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:10:26,122 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:10:26,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:25" (3/4) ... [2022-07-13 03:10:26,123 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-13 03:10:26,140 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 03:10:26,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:10:26,141 INFO L158 Benchmark]: Toolchain (without parser) took 1301.47ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 60.2MB in the beginning and 52.0MB in the end (delta: 8.2MB). Peak memory consumption was 27.4MB. Max. memory is 16.1GB. [2022-07-13 03:10:26,141 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:10:26,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.05ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 65.2MB in the end (delta: -5.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2022-07-13 03:10:26,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.06ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 63.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:10:26,143 INFO L158 Benchmark]: Boogie Preprocessor took 9.37ms. Allocated memory is still 88.1MB. Free memory was 63.9MB in the beginning and 63.0MB in the end (delta: 890.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:10:26,143 INFO L158 Benchmark]: RCFGBuilder took 148.68ms. Allocated memory is still 88.1MB. Free memory was 63.0MB in the beginning and 55.0MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 03:10:26,143 INFO L158 Benchmark]: BuchiAutomizer took 948.29ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.9MB in the beginning and 54.1MB in the end (delta: 857.9kB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2022-07-13 03:10:26,144 INFO L158 Benchmark]: Witness Printer took 19.08ms. Allocated memory is still 107.0MB. Free memory was 53.5MB in the beginning and 52.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:10:26,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 88.1MB. Free memory is still 44.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.05ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 65.2MB in the end (delta: -5.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.06ms. Allocated memory is still 88.1MB. Free memory was 64.9MB in the beginning and 63.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 9.37ms. Allocated memory is still 88.1MB. Free memory was 63.9MB in the beginning and 63.0MB in the end (delta: 890.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 148.68ms. Allocated memory is still 88.1MB. Free memory was 63.0MB in the beginning and 55.0MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 948.29ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 54.9MB in the beginning and 54.1MB in the end (delta: 857.9kB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Witness Printer took 19.08ms. Allocated memory is still 107.0MB. Free memory was 53.5MB in the beginning and 52.0MB 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 0.0s. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq139 hnf95 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - 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@52358464=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 i >= -5 && i <= 5 Loop: [L10] COND FALSE !(i > 0) [L13] COND FALSE !(i < 0) [L9] COND TRUE i >= -5 && i <= 5 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-13 03:10:26,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-07-13 03:10:26,398 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)