./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/c.08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/c.08.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 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:13:03,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:13:03,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:13:03,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:13:03,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:13:03,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:13:03,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:13:03,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:13:03,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:13:03,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:13:03,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:13:03,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:13:03,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:13:03,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:13:03,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:13:03,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:13:03,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:13:03,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:13:03,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:13:03,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:13:03,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:13:03,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:13:03,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:13:03,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:13:03,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:13:03,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:13:03,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:13:03,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:13:03,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:13:03,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:13:03,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:13:03,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:13:03,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:13:03,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:13:03,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:13:03,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:13:03,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:13:03,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:13:03,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:13:03,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:13:03,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:13:03,615 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:13:03,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:13:03,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:13:03,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:13:03,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:13:03,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:13:03,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:13:03,649 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:13:03,649 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:13:03,650 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:13:03,650 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:13:03,650 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:13:03,651 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:13:03,651 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:13:03,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:13:03,651 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:13:03,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:13:03,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:13:03,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:13:03,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:13:03,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:13:03,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:13:03,662 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:13:03,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:13:03,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:13:03,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:13:03,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:13:03,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:13:03,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:13:03,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:13:03,664 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:13:03,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 [2021-08-27 14:13:03,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:13:03,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:13:03,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:13:03,984 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:13:03,985 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:13:03,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/c.08.c [2021-08-27 14:13:04,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8df39ea/e0ce6a6cc5b74b8e8f3f09553990ec90/FLAGe80c88af5 [2021-08-27 14:13:04,455 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:13:04,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/c.08.c [2021-08-27 14:13:04,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8df39ea/e0ce6a6cc5b74b8e8f3f09553990ec90/FLAGe80c88af5 [2021-08-27 14:13:04,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b8df39ea/e0ce6a6cc5b74b8e8f3f09553990ec90 [2021-08-27 14:13:04,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:13:04,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:13:04,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:13:04,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:13:04,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:13:04,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:13:04" (1/1) ... [2021-08-27 14:13:04,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfb0545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:04, skipping insertion in model container [2021-08-27 14:13:04,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:13:04" (1/1) ... [2021-08-27 14:13:04,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:13:04,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:13:05,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:13:05,006 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:13:05,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:13:05,022 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:13:05,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05 WrapperNode [2021-08-27 14:13:05,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:13:05,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:13:05,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:13:05,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:13:05,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:13:05,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:13:05,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:13:05,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:13:05,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:13:05,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:13:05,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:13:05,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:13:05,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (1/1) ... [2021-08-27 14:13:05,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:05,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:05,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 14:13:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:13:05,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:13:05,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:13:05,269 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-27 14:13:05,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:13:05 BoogieIcfgContainer [2021-08-27 14:13:05,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:13:05,274 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:13:05,275 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:13:05,277 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:13:05,278 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:13:05,278 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:13:04" (1/3) ... [2021-08-27 14:13:05,279 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ed1862c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:13:05, skipping insertion in model container [2021-08-27 14:13:05,279 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:13:05,280 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:13:05" (2/3) ... [2021-08-27 14:13:05,280 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ed1862c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:13:05, skipping insertion in model container [2021-08-27 14:13:05,280 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:13:05,280 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:13:05" (3/3) ... [2021-08-27 14:13:05,282 INFO L389 chiAutomizerObserver]: Analyzing ICFG c.08.c [2021-08-27 14:13:05,316 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:13:05,317 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:13:05,317 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:13:05,317 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:13:05,317 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:13:05,317 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:13:05,317 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:13:05,318 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:13:05,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) 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) [2021-08-27 14:13:05,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:13:05,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:13:05,340 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:13:05,345 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:13:05,345 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:13:05,345 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:13:05,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) 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) [2021-08-27 14:13:05,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 14:13:05,346 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:13:05,346 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:13:05,347 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:13:05,347 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 14:13:05,352 INFO L791 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 5#L10-2true [2021-08-27 14:13:05,352 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0 >= 0);main_~j~0 := 0; 3#L12-2true assume !(main_~j~0 <= main_~i~0 - 1); 8#L12-3true main_~i~0 := main_~i~0 - 1; 5#L10-2true [2021-08-27 14:13:05,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:05,356 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 14:13:05,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:05,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950814775] [2021-08-27 14:13:05,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:05,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:05,437 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:13:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:05,451 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:13:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:05,469 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-08-27 14:13:05,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:05,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259840862] [2021-08-27 14:13:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:05,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:05,479 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:13:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:05,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:13:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2021-08-27 14:13:05,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:05,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408552530] [2021-08-27 14:13:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:05,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:05,492 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:13:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:05,498 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:13:05,566 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:13:05,567 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:13:05,567 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:13:05,567 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:13:05,567 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:13:05,567 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:05,567 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:13:05,567 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:13:05,567 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-08-27 14:13:05,567 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:13:05,568 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:13:05,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:05,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:05,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:05,706 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:13:05,707 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:13:05,709 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:05,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:05,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:05,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 14:13:05,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:13:05,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:05,748 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:13:05,748 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:13:05,777 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 [2021-08-27 14:13:05,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:05,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:05,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:05,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 14:13:05,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:13:05,782 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:05,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:13:05,810 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 14:13:05,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:05,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:05,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:05,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 14:13:05,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:13:05,841 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:05,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:05,873 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:05,874 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:05,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 14:13:05,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:13:05,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:05,922 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:13:05,928 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 [2021-08-27 14:13:05,929 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:13:05,929 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:13:05,929 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:13:05,929 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:13:05,929 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:13:05,929 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:05,929 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:13:05,929 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:13:05,929 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration1_Loop [2021-08-27 14:13:05,929 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:13:05,929 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:13:05,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:05,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:05,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,005 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:13:06,010 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:13:06,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:06,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 14:13:06,022 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:13:06,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:13:06,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:13:06,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:13:06,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:13:06,041 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:13:06,041 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:13:06,049 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:13:06,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:06,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:06,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 14:13:06,072 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:13:06,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:13:06,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:13:06,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:13:06,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:13:06,087 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:13:06,087 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:13:06,102 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:13:06,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:06,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,133 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:06,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 14:13:06,136 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:13:06,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:13:06,145 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:13:06,146 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:13:06,146 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:13:06,146 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:13:06,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:13:06,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:13:06,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:13:06,190 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:13:06,190 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:13:06,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,193 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:13:06,201 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:13:06,201 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:13:06,201 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:13:06,202 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-08-27 14:13:06,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 14:13:06,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:06,224 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:13:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:06,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:13:06,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:06,258 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:13:06,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:13:06,297 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 [2021-08-27 14:13:06,298 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2021-08-27 14:13:06,332 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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 23 states and 35 transitions. Complement of second has 7 states. [2021-08-27 14:13:06,332 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 [2021-08-27 14:13:06,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 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) [2021-08-27 14:13:06,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-08-27 14:13:06,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2021-08-27 14:13:06,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:06,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-27 14:13:06,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:06,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2021-08-27 14:13:06,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:06,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2021-08-27 14:13:06,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:13:06,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2021-08-27 14:13:06,342 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-27 14:13:06,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-08-27 14:13:06,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-08-27 14:13:06,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:13:06,343 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-08-27 14:13:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-08-27 14:13:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-08-27 14:13:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:13:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2021-08-27 14:13:06,360 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-08-27 14:13:06,360 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-08-27 14:13:06,360 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:13:06,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2021-08-27 14:13:06,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:13:06,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:13:06,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:13:06,361 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 14:13:06,361 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 14:13:06,361 INFO L791 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 73#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 70#L12-2 [2021-08-27 14:13:06,361 INFO L793 eck$LassoCheckResult]: Loop: 70#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 70#L12-2 [2021-08-27 14:13:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:06,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 14:13:06,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:06,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882446072] [2021-08-27 14:13:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:06,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,366 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:13:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,369 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:13:06,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:06,370 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-08-27 14:13:06,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:06,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907814644] [2021-08-27 14:13:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:06,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,374 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:13:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,376 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:13:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:06,377 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-08-27 14:13:06,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:06,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324502453] [2021-08-27 14:13:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:06,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,381 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:13:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,385 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:13:06,421 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:13:06,421 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:13:06,421 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:13:06,422 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:13:06,422 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:13:06,422 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,422 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:13:06,422 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:13:06,422 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-08-27 14:13:06,422 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:13:06,422 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:13:06,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:06,473 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:13:06,473 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:13:06,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,474 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) [2021-08-27 14:13:06,478 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 [2021-08-27 14:13:06,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:13:06,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:06,494 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:13:06,494 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: [] [2021-08-27 14:13:06,512 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 [2021-08-27 14:13:06,513 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,513 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) [2021-08-27 14:13:06,516 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 [2021-08-27 14:13:06,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:13:06,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:06,539 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 [2021-08-27 14:13:06,540 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,545 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) [2021-08-27 14:13:06,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:13:06,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:06,569 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 [2021-08-27 14:13:06,664 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:13:06,667 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 [2021-08-27 14:13:06,667 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:13:06,667 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:13:06,667 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:13:06,667 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:13:06,667 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:13:06,667 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,668 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:13:06,668 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:13:06,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration2_Loop [2021-08-27 14:13:06,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:13:06,668 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:13:06,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:13:06,714 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:13:06,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,721 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) [2021-08-27 14:13:06,732 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:13:06,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:13:06,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:13:06,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:13:06,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:13:06,744 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 [2021-08-27 14:13:06,746 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:13:06,746 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:13:06,776 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:13:06,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:06,796 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,797 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) [2021-08-27 14:13:06,798 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 [2021-08-27 14:13:06,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:13:06,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:13:06,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:13:06,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:13:06,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:13:06,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:13:06,811 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:13:06,811 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:13:06,817 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:13:06,819 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:13:06,819 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 14:13:06,819 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:06,820 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) [2021-08-27 14:13:06,821 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 [2021-08-27 14:13:06,822 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:13:06,822 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:13:06,822 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:13:06,822 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 14:13:06,838 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 [2021-08-27 14:13:06,839 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:13:06,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:06,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:13:06,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:06,877 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:13:06,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:13:06,878 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 14:13:06,878 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:13:06,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 13 states and 18 transitions. Complement of second has 5 states. [2021-08-27 14:13:06,893 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 [2021-08-27 14:13:06,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:13:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-27 14:13:06,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-08-27 14:13:06,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:06,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-08-27 14:13:06,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:06,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-08-27 14:13:06,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:06,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-08-27 14:13:06,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:13:06,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2021-08-27 14:13:06,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-08-27 14:13:06,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-08-27 14:13:06,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-08-27 14:13:06,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 14:13:06,897 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-08-27 14:13:06,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-08-27 14:13:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2021-08-27 14:13:06,898 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) [2021-08-27 14:13:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-08-27 14:13:06,898 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-08-27 14:13:06,898 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-08-27 14:13:06,899 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 14:13:06,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2021-08-27 14:13:06,899 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:13:06,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:13:06,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:13:06,900 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-08-27 14:13:06,900 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 14:13:06,900 INFO L791 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 121#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 119#L12-2 assume !(main_~j~0 <= main_~i~0 - 1); 120#L12-3 main_~i~0 := main_~i~0 - 1; 122#L10-2 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 118#L12-2 [2021-08-27 14:13:06,900 INFO L793 eck$LassoCheckResult]: Loop: 118#L12-2 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := 1 + main_~j~0; 118#L12-2 [2021-08-27 14:13:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2021-08-27 14:13:06,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:06,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821292429] [2021-08-27 14:13:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:06,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:13:06,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 14:13:06,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821292429] [2021-08-27 14:13:06,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821292429] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 14:13:06,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 14:13:06,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 14:13:06,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956953712] [2021-08-27 14:13:06,944 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 14:13:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:06,944 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-08-27 14:13:06,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:13:06,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22153949] [2021-08-27 14:13:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:13:06,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:13:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,948 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:13:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:13:06,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:13:06,962 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:13:06,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:13:06,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:13:06,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:13:06,963 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:13:06,963 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:06,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:13:06,963 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:13:06,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-08-27 14:13:06,963 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:13:06,963 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:13:06,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:06,999 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:13:06,999 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:13:06,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:07,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:07,001 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) [2021-08-27 14:13:07,009 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:13:07,009 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:07,044 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 [2021-08-27 14:13:07,045 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 14:13:07,045 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: [] [2021-08-27 14:13:07,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:07,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:07,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:07,074 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) [2021-08-27 14:13:07,075 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 [2021-08-27 14:13:07,076 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:13:07,076 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:07,104 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 [2021-08-27 14:13:07,104 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:07,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:07,105 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) [2021-08-27 14:13:07,105 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 [2021-08-27 14:13:07,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:13:07,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:13:07,210 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:13:07,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:07,213 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:13:07,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:13:07,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:13:07,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:13:07,213 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:13:07,213 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:07,213 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:13:07,213 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:13:07,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.08.c_Iteration3_Loop [2021-08-27 14:13:07,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:13:07,214 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:13:07,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:07,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:07,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:13:07,263 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:13:07,263 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:13:07,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:07,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:07,265 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) [2021-08-27 14:13:07,273 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:13:07,281 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:13:07,281 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:13:07,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:13:07,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:13:07,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:13:07,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:13:07,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:13:07,284 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 [2021-08-27 14:13:07,296 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:13:07,299 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:13:07,299 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:13:07,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:13:07,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:13:07,300 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) [2021-08-27 14:13:07,304 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 [2021-08-27 14:13:07,304 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:13:07,304 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:13:07,304 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:13:07,305 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-27 14:13:07,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-08-27 14:13:07,325 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:13:07,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:07,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:13:07,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:07,371 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:13:07,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:13:07,372 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 14:13:07,372 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 14:13:07,382 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11 states and 15 transitions. Complement of second has 5 states. [2021-08-27 14:13:07,382 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 [2021-08-27 14:13:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 14:13:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-27 14:13:07,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-08-27 14:13:07,383 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:07,383 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 14:13:07,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:07,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:13:07,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:07,434 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 [2021-08-27 14:13:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:07,444 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:13:07,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:13:07,445 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 14:13:07,445 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 14:13:07,454 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 11 states and 15 transitions. Complement of second has 5 states. [2021-08-27 14:13:07,455 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 [2021-08-27 14:13:07,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 14:13:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-08-27 14:13:07,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-08-27 14:13:07,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:07,455 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 14:13:07,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:13:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:07,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:13:07,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:13:07,494 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:13:07,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:13:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:13:07,495 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 1 loop predicates [2021-08-27 14:13:07,495 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 14:13:07,511 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 9 states and 11 transitions. Complement of second has 4 states. [2021-08-27 14:13:07,512 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 [2021-08-27 14:13:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-08-27 14:13:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-08-27 14:13:07,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2021-08-27 14:13:07,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:07,513 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2021-08-27 14:13:07,513 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:07,514 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-08-27 14:13:07,514 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:13:07,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2021-08-27 14:13:07,517 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:13:07,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2021-08-27 14:13:07,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:13:07,517 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:13:07,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:13:07,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:13:07,518 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:13:07,518 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:13:07,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 14:13:07,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 14:13:07,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-27 14:13:07,521 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:13:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 14:13:07,523 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 14:13:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 14:13:07,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 14:13:07,524 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:13:07,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 14:13:07,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:13:07,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:13:07,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:13:07,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:13:07,525 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:13:07,525 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:13:07,525 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:13:07,525 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 14:13:07,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:13:07,525 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:13:07,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:13:07,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:13:07 BoogieIcfgContainer [2021-08-27 14:13:07,530 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:13:07,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:13:07,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:13:07,531 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:13:07,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:13:05" (3/4) ... [2021-08-27 14:13:07,534 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:13:07,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:13:07,535 INFO L168 Benchmark]: Toolchain (without parser) took 2652.27 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 30.0 MB in the beginning and 43.1 MB in the end (delta: -13.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:13:07,536 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:13:07,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 136.32 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 35.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:13:07,540 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.27 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 33.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:13:07,540 INFO L168 Benchmark]: Boogie Preprocessor took 13.24 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 32.8 MB in the end (delta: 909.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:13:07,541 INFO L168 Benchmark]: RCFGBuilder took 215.22 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 32.8 MB in the beginning and 39.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:13:07,541 INFO L168 Benchmark]: BuchiAutomizer took 2256.34 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 39.0 MB in the beginning and 43.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-08-27 14:13:07,543 INFO L168 Benchmark]: Witness Printer took 3.06 ms. Allocated memory is still 75.5 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:13:07,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 136.32 ms. Allocated memory is still 52.4 MB. Free memory was 29.8 MB in the beginning and 35.1 MB in the end (delta: -5.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.27 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 33.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.24 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 32.8 MB in the end (delta: 909.9 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 215.22 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 32.8 MB in the beginning and 39.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2256.34 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 39.0 MB in the beginning and 43.6 MB in the end (delta: -4.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.06 ms. Allocated memory is still 75.5 MB. Free memory is still 43.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function i + -1 * j and consists of 3 locations. One nondeterministic module has affine ranking function i + -1 * j and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 8.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 32.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax188 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp96 dnf100 smp100 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 14:13:07,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...