./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.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 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:14:41,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:14:41,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:14:41,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:14:41,131 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:14:41,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:14:41,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:14:41,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:14:41,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:14:41,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:14:41,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:14:41,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:14:41,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:14:41,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:14:41,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:14:41,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:14:41,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:14:41,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:14:41,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:14:41,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:14:41,149 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:14:41,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:14:41,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:14:41,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:14:41,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:14:41,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:14:41,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:14:41,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:14:41,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:14:41,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:14:41,174 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:14:41,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:14:41,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:14:41,176 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:14:41,177 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:14:41,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:14:41,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:14:41,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:14:41,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:14:41,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:14:41,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:14:41,182 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:14:41,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:14:41,222 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:14:41,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:14:41,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:14:41,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:14:41,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:14:41,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:14:41,228 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:14:41,228 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:14:41,228 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:14:41,229 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:14:41,229 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:14:41,229 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:14:41,229 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:14:41,230 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:14:41,230 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:14:41,230 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:14:41,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:14:41,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:14:41,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:14:41,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:14:41,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:14:41,231 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:14:41,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:14:41,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:14:41,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:14:41,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:14:41,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:14:41,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:14:41,238 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:14:41,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd [2022-07-23 14:14:41,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:14:41,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:14:41,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:14:41,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:14:41,459 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:14:41,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2022-07-23 14:14:41,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f804f61/6c52e535900d4bfb93eb8415d8097d86/FLAGd2213c9f9 [2022-07-23 14:14:41,925 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:14:41,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2022-07-23 14:14:41,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f804f61/6c52e535900d4bfb93eb8415d8097d86/FLAGd2213c9f9 [2022-07-23 14:14:42,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f804f61/6c52e535900d4bfb93eb8415d8097d86 [2022-07-23 14:14:42,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:14:42,329 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:14:42,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:42,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:14:42,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:14:42,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bd540f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42, skipping insertion in model container [2022-07-23 14:14:42,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:14:42,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:14:42,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:42,453 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:14:42,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:42,474 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:14:42,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42 WrapperNode [2022-07-23 14:14:42,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:42,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:42,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:14:42,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:14:42,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,501 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-07-23 14:14:42,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:42,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:14:42,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:14:42,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:14:42,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:14:42,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:14:42,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:14:42,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:14:42,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (1/1) ... [2022-07-23 14:14:42,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:42,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:42,544 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) [2022-07-23 14:14:42,547 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 [2022-07-23 14:14:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:14:42,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:14:42,616 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:14:42,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:14:42,667 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:14:42,672 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:14:42,673 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 14:14:42,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:42 BoogieIcfgContainer [2022-07-23 14:14:42,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:14:42,675 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:14:42,675 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:14:42,678 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:14:42,679 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:42,679 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:14:42" (1/3) ... [2022-07-23 14:14:42,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43964554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:42, skipping insertion in model container [2022-07-23 14:14:42,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:42,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:42" (2/3) ... [2022-07-23 14:14:42,681 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@43964554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:42, skipping insertion in model container [2022-07-23 14:14:42,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:42,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:42" (3/3) ... [2022-07-23 14:14:42,682 INFO L354 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2022-07-23 14:14:42,728 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:14:42,728 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:14:42,728 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:14:42,729 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:14:42,729 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:14:42,729 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:14:42,729 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:14:42,729 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:14:42,757 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:42,803 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:14:42,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:42,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:42,809 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:14:42,809 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:14:42,809 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:14:42,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:42,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:14:42,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:42,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:42,811 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:14:42,811 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:14:42,818 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L18-2true [2022-07-23 14:14:42,819 INFO L754 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 4#L18true assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 6#L18-2true [2022-07-23 14:14:42,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:42,825 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:14:42,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:42,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713805279] [2022-07-23 14:14:42,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:42,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:42,895 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:42,909 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:42,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-07-23 14:14:42,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:42,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495486409] [2022-07-23 14:14:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:42,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:42,921 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:42,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:42,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:42,927 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-23 14:14:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:42,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407967005] [2022-07-23 14:14:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:42,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:42,934 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:42,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:42,995 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:42,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:42,995 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:42,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:42,996 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:42,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:42,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:42,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:42,996 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2022-07-23 14:14:42,997 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:42,997 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:43,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,092 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:43,093 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:43,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,097 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) [2022-07-23 14:14:43,118 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 [2022-07-23 14:14:43,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:43,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:43,147 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:43,147 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: [] [2022-07-23 14:14:43,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:43,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,204 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) [2022-07-23 14:14:43,234 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 [2022-07-23 14:14:43,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:43,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:43,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:43,264 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: [] [2022-07-23 14:14:43,289 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 [2022-07-23 14:14:43,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,291 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) [2022-07-23 14:14:43,293 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 [2022-07-23 14:14:43,294 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:43,295 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:43,341 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 [2022-07-23 14:14:43,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,343 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) [2022-07-23 14:14:43,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:43,350 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:43,375 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 [2022-07-23 14:14:43,399 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:43,406 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 [2022-07-23 14:14:43,406 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:43,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:43,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:43,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:43,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:43,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:43,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:43,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2022-07-23 14:14:43,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:43,407 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:43,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,471 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:43,476 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:43,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,479 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) [2022-07-23 14:14:43,489 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 [2022-07-23 14:14:43,490 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 [2022-07-23 14:14:43,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:43,498 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:43,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:43,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:43,503 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:14:43,503 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:14:43,528 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:43,551 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 [2022-07-23 14:14:43,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,554 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) [2022-07-23 14:14:43,555 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 [2022-07-23 14:14:43,556 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 [2022-07-23 14:14:43,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:43,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:43,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:43,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:43,571 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:14:43,572 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:14:43,600 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:43,620 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 [2022-07-23 14:14:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,621 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) [2022-07-23 14:14:43,635 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 [2022-07-23 14:14:43,637 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 [2022-07-23 14:14:43,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:43,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:43,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:43,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:43,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:43,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:43,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:43,651 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:43,655 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:14:43,656 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:14:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,663 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) [2022-07-23 14:14:43,668 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:43,668 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:43,669 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:43,669 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-23 14:14:43,675 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 [2022-07-23 14:14:43,687 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 [2022-07-23 14:14:43,690 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:43,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:43,735 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:43,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:43,752 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:43,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:43,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:43,819 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:14:43,820 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:43,848 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 8 states. [2022-07-23 14:14:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:43,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:43,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-07-23 14:14:43,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-23 14:14:43,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:43,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-23 14:14:43,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:43,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-23 14:14:43,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:43,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-07-23 14:14:43,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:14:43,863 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-23 14:14:43,864 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-07-23 14:14:43,864 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-07-23 14:14:43,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-23 14:14:43,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:43,865 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:14:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-23 14:14:43,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-23 14:14:43,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2022-07-23 14:14:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-07-23 14:14:43,885 INFO L392 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:14:43,885 INFO L374 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-23 14:14:43,886 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:14:43,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-07-23 14:14:43,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:14:43,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:43,887 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:43,887 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:14:43,887 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:14:43,887 INFO L752 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 77#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 79#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 72#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 73#L18-2 [2022-07-23 14:14:43,888 INFO L754 eck$LassoCheckResult]: Loop: 73#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 78#L18 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 73#L18-2 [2022-07-23 14:14:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-23 14:14:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:43,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335310739] [2022-07-23 14:14:43,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:43,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:43,894 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:43,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:43,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:43,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-07-23 14:14:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:43,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323578801] [2022-07-23 14:14:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:43,905 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:43,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:43,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:43,908 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-07-23 14:14:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:43,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416347637] [2022-07-23 14:14:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:43,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:43,916 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:43,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:43,941 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:43,942 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:43,942 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:43,942 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:43,942 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:43,942 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,942 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:43,942 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:43,942 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2022-07-23 14:14:43,943 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:43,943 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:43,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:43,992 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:43,992 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:43,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:43,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:43,994 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 14:14:44,029 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:44,029 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:44,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-23 14:14:44,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,047 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 14:14:44,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,067 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:44,067 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:44,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:44,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 14:14:44,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,096 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:44,096 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:44,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-23 14:14:44,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 14:14:44,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:44,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:44,183 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-07-23 14:14:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,185 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:14:44,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:44,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,219 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:14:44,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:44,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,248 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:44,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-07-23 14:14:44,250 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:44,251 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:44,251 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:44,251 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:44,251 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:44,251 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,251 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:44,251 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:44,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2022-07-23 14:14:44,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:44,251 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:44,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,338 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:44,338 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:44,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,341 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,352 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 [2022-07-23 14:14:44,353 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 [2022-07-23 14:14:44,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:44,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:44,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:44,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:44,362 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:14:44,362 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:14:44,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 14:14:44,375 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:44,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-07-23 14:14:44,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,392 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-23 14:14:44,394 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 [2022-07-23 14:14:44,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:44,400 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:44,400 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:44,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:44,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:44,401 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:44,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:44,409 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:44,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:44,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,436 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,446 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 [2022-07-23 14:14:44,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:44,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:44,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:44,453 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:44,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:14:44,455 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:14:44,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-23 14:14:44,475 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:44,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2022-07-23 14:14:44,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,496 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:44,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 14:14:44,500 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 [2022-07-23 14:14:44,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:44,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:44,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:44,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:44,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:44,506 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:44,506 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:44,509 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:44,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-07-23 14:14:44,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,526 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2022-07-23 14:14:44,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-23 14:14:44,528 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 [2022-07-23 14:14:44,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:44,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:44,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:44,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:44,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:44,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:44,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:44,537 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:44,539 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-23 14:14:44,539 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:14:44,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,541 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2022-07-23 14:14:44,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-23 14:14:44,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:44,543 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:44,543 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:44,543 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-23 14:14:44,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:44,559 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:44,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:44,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:44,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:44,606 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:44,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:44,624 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:14:44,625 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:44,638 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2022-07-23 14:14:44,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:44,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:44,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-23 14:14:44,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-23 14:14:44,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:44,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-23 14:14:44,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:44,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-07-23 14:14:44,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:44,643 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-07-23 14:14:44,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:14:44,646 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-07-23 14:14:44,646 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-07-23 14:14:44,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:14:44,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-07-23 14:14:44,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:44,647 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-23 14:14:44,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-07-23 14:14:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-23 14:14:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2022-07-23 14:14:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-07-23 14:14:44,650 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-23 14:14:44,650 INFO L374 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-23 14:14:44,651 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:14:44,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2022-07-23 14:14:44,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-23 14:14:44,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:44,653 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:44,653 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2022-07-23 14:14:44,653 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:14:44,653 INFO L752 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 139#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 131#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 132#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 140#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 137#L18-2 [2022-07-23 14:14:44,653 INFO L754 eck$LassoCheckResult]: Loop: 137#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 138#L18 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 137#L18-2 [2022-07-23 14:14:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash 889692233, now seen corresponding path program 2 times [2022-07-23 14:14:44,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:44,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195847133] [2022-07-23 14:14:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:44,684 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:44,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:44,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:44,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-07-23 14:14:44,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:44,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070419129] [2022-07-23 14:14:44,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:44,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:44,702 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:44,704 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash 295744366, now seen corresponding path program 2 times [2022-07-23 14:14:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:44,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040761229] [2022-07-23 14:14:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:44,712 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:44,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:44,737 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:44,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:44,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:44,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:44,738 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:44,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:44,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:44,738 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2022-07-23 14:14:44,738 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:44,738 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:44,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,791 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:44,792 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,794 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2022-07-23 14:14:44,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-23 14:14:44,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,819 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:44,819 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:44,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:44,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,846 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2022-07-23 14:14:44,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-23 14:14:44,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,871 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:44,871 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:44,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:44,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,898 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2022-07-23 14:14:44,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:44,901 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-23 14:14:44,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-07-23 14:14:44,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:44,943 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2022-07-23 14:14:44,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-23 14:14:44,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:44,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:44,972 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:44,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:44,975 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:44,975 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:44,975 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:44,975 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:44,975 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:44,975 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:44,975 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:44,975 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:44,975 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2022-07-23 14:14:44,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:44,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:44,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:44,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,045 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:45,045 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:45,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,048 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2022-07-23 14:14:45,056 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 [2022-07-23 14:14:45,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:45,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:45,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:45,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:45,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:45,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:45,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:45,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-23 14:14:45,079 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:45,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,107 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2022-07-23 14:14:45,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-23 14:14:45,109 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 [2022-07-23 14:14:45,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:45,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:45,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:45,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:45,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:14:45,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:14:45,135 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:45,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,162 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2022-07-23 14:14:45,168 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 [2022-07-23 14:14:45,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:45,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:45,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:45,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:45,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:45,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:45,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:45,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-23 14:14:45,195 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:45,199 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:14:45,199 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:14:45,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,204 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2022-07-23 14:14:45,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:45,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:45,212 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:45,212 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-23 14:14:45,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-23 14:14:45,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,238 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:45,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:45,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:45,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:45,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:45,302 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:45,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:45,318 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:14:45,323 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:45,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,334 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2022-07-23 14:14:45,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:45,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:45,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-23 14:14:45,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-23 14:14:45,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:45,336 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:14:45,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:45,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:45,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:45,361 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:45,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:45,373 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:14:45,373 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:45,380 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2022-07-23 14:14:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-07-23 14:14:45,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-23 14:14:45,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:45,382 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:14:45,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:45,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:45,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:45,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:45,406 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:45,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:45,418 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:14:45,418 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:45,429 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 24 transitions. Complement of second has 4 states. [2022-07-23 14:14:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:45,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:45,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-07-23 14:14:45,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-07-23 14:14:45,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:45,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2022-07-23 14:14:45,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:45,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2022-07-23 14:14:45,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:45,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2022-07-23 14:14:45,433 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 14:14:45,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2022-07-23 14:14:45,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-07-23 14:14:45,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-07-23 14:14:45,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-07-23 14:14:45,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:14:45,434 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-07-23 14:14:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-07-23 14:14:45,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2022-07-23 14:14:45,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:45,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2022-07-23 14:14:45,435 INFO L392 hiAutomatonCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-07-23 14:14:45,435 INFO L374 stractBuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-07-23 14:14:45,436 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:14:45,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2022-07-23 14:14:45,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 14:14:45,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:45,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:45,436 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:14:45,437 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-23 14:14:45,437 INFO L752 eck$LassoCheckResult]: Stem: 295#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 296#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 292#L18-2 [2022-07-23 14:14:45,437 INFO L754 eck$LassoCheckResult]: Loop: 292#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 291#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 292#L18-2 [2022-07-23 14:14:45,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-07-23 14:14:45,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:45,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338065469] [2022-07-23 14:14:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:45,441 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:45,442 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:45,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-07-23 14:14:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:45,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034288125] [2022-07-23 14:14:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:45,447 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:45,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2022-07-23 14:14:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:45,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353717982] [2022-07-23 14:14:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:45,454 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:45,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:45,486 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:45,486 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:45,486 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:45,486 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:45,487 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:14:45,487 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,487 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:45,487 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:45,487 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration4_Loop [2022-07-23 14:14:45,487 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:45,487 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:45,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,542 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:45,542 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:14:45,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,544 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2022-07-23 14:14:45,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:45,552 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:45,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-23 14:14:45,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:45,568 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=3, ULTIMATE.start_main_~y~0#1=3} Honda state: {ULTIMATE.start_main_#t~nondet3#1=3, ULTIMATE.start_main_~y~0#1=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:45,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,595 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2022-07-23 14:14:45,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:45,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:45,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-23 14:14:45,627 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:45,628 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:45,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,652 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2022-07-23 14:14:45,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-23 14:14:45,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:45,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:45,664 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:45,664 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:45,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-07-23 14:14:45,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,682 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2022-07-23 14:14:45,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-23 14:14:45,684 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:45,684 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:45,698 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:14:45,699 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:14:45,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,718 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2022-07-23 14:14:45,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-07-23 14:14:45,720 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:14:45,720 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:45,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-07-23 14:14:45,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,744 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2022-07-23 14:14:45,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-07-23 14:14:45,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:14:45,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:14:45,771 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:14:45,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-07-23 14:14:45,774 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:14:45,774 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:14:45,774 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:14:45,774 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:14:45,774 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:14:45,774 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:14:45,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:14:45,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration4_Loop [2022-07-23 14:14:45,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:14:45,775 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:14:45,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:14:45,850 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:14:45,850 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:14:45,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,851 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2022-07-23 14:14:45,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-07-23 14:14:45,858 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 [2022-07-23 14:14:45,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:45,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:45,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:45,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:45,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:45,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:45,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:45,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:45,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-07-23 14:14:45,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,891 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2022-07-23 14:14:45,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-07-23 14:14:45,894 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 [2022-07-23 14:14:45,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:45,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:45,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:45,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:45,901 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:14:45,901 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:14:45,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:14:45,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:45,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,925 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2022-07-23 14:14:45,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-07-23 14:14:45,926 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 [2022-07-23 14:14:45,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:14:45,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:14:45,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:14:45,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:14:45,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:14:45,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:14:45,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:14:45,957 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:14:45,960 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:14:45,960 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:14:45,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:45,964 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2022-07-23 14:14:45,975 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:14:45,975 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:14:45,976 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:14:45,976 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-23 14:14:45,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-07-23 14:14:45,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-07-23 14:14:45,997 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:14:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:46,010 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:14:46,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:14:46,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:14:46,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:14:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:14:46,035 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-23 14:14:46,035 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:46,043 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 18 transitions. Complement of second has 4 states. [2022-07-23 14:14:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:14:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:14:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-23 14:14:46,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-23 14:14:46,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:46,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-23 14:14:46,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:46,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-23 14:14:46,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:14:46,045 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2022-07-23 14:14:46,045 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:14:46,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2022-07-23 14:14:46,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:14:46,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:14:46,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:14:46,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:14:46,046 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:14:46,046 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:14:46,046 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:14:46,046 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 14:14:46,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:14:46,046 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:14:46,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:14:46,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:14:46 BoogieIcfgContainer [2022-07-23 14:14:46,053 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:14:46,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:14:46,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:14:46,053 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:14:46,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:42" (3/4) ... [2022-07-23 14:14:46,056 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:14:46,056 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:14:46,057 INFO L158 Benchmark]: Toolchain (without parser) took 3727.63ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 71.1MB in the beginning and 50.1MB in the end (delta: 21.1MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2022-07-23 14:14:46,057 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:46,057 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.39ms. Allocated memory is still 92.3MB. Free memory was 71.0MB in the beginning and 62.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:14:46,057 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.82ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 61.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:46,058 INFO L158 Benchmark]: Boogie Preprocessor took 13.77ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 60.0MB in the end (delta: 984.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:14:46,058 INFO L158 Benchmark]: RCFGBuilder took 157.48ms. Allocated memory is still 92.3MB. Free memory was 60.0MB in the beginning and 52.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:14:46,058 INFO L158 Benchmark]: BuchiAutomizer took 3377.48ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 50.1MB in the end (delta: 1.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2022-07-23 14:14:46,058 INFO L158 Benchmark]: Witness Printer took 3.02ms. Allocated memory is still 111.1MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:46,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 75.5MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 75.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.39ms. Allocated memory is still 92.3MB. Free memory was 71.0MB in the beginning and 62.3MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.82ms. Allocated memory is still 92.3MB. Free memory was 62.3MB in the beginning and 61.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.77ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 60.0MB in the end (delta: 984.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 157.48ms. Allocated memory is still 92.3MB. Free memory was 60.0MB in the beginning and 52.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3377.48ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 50.1MB in the end (delta: 1.9MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Witness Printer took 3.02ms. Allocated memory is still 111.1MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35 IncrementalHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 33 mSDtfsCounter, 35 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 14:14:46,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-07-23 14:14:46,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE