./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.18.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/b.18.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 b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 17:19:14,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:19:14,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:19:14,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:19:14,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:19:14,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:19:14,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:19:14,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:19:14,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:19:14,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:19:14,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:19:14,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:19:14,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:19:14,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:19:14,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:19:14,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:19:14,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:19:14,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:19:14,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:19:14,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:19:14,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:19:14,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:19:14,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:19:14,783 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:19:14,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:19:14,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:19:14,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:19:14,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:19:14,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:19:14,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:19:14,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:19:14,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:19:14,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:19:14,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:19:14,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:19:14,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:19:14,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:19:14,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:19:14,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:19:14,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:19:14,795 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:19:14,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:19:14,823 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:19:14,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:19:14,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:19:14,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:19:14,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:19:14,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:19:14,825 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:19:14,825 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:19:14,825 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:19:14,825 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:19:14,826 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:19:14,826 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:19:14,826 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:19:14,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:19:14,826 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:19:14,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:19:14,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:19:14,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:19:14,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:19:14,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:19:14,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:19:14,827 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:19:14,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:19:14,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:19:14,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:19:14,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:19:14,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:19:14,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:19:14,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:19:14,829 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:19:14,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b84dd29ea36609e5f5c61ea995baac9099f3fa2331fbdc558930ff5215a280 [2021-12-19 17:19:15,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:19:15,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:19:15,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:19:15,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:19:15,033 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:19:15,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.18.c [2021-12-19 17:19:15,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a31f3594/11ab6ddb2f1e4980b5ce5fed396e81b9/FLAG2babc2d69 [2021-12-19 17:19:15,439 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:19:15,440 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.18.c [2021-12-19 17:19:15,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a31f3594/11ab6ddb2f1e4980b5ce5fed396e81b9/FLAG2babc2d69 [2021-12-19 17:19:15,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a31f3594/11ab6ddb2f1e4980b5ce5fed396e81b9 [2021-12-19 17:19:15,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:19:15,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:19:15,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:19:15,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:19:15,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:19:15,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a6c867c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15, skipping insertion in model container [2021-12-19 17:19:15,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:19:15,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:19:15,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:19:15,585 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:19:15,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:19:15,603 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:19:15,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15 WrapperNode [2021-12-19 17:19:15,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:19:15,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:19:15,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:19:15,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:19:15,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,625 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2021-12-19 17:19:15,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:19:15,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:19:15,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:19:15,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:19:15,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:19:15,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:19:15,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:19:15,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:19:15,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (1/1) ... [2021-12-19 17:19:15,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:15,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:15,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:15,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 17:19:15,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:19:15,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:19:15,724 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:19:15,725 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:19:15,762 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:19:15,766 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:19:15,766 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-19 17:19:15,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:15 BoogieIcfgContainer [2021-12-19 17:19:15,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:19:15,768 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:19:15,768 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:19:15,770 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:19:15,771 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:15,771 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:19:15" (1/3) ... [2021-12-19 17:19:15,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@de49e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:19:15, skipping insertion in model container [2021-12-19 17:19:15,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:15,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:19:15" (2/3) ... [2021-12-19 17:19:15,772 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@de49e54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:19:15, skipping insertion in model container [2021-12-19 17:19:15,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:19:15,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:15" (3/3) ... [2021-12-19 17:19:15,773 INFO L388 chiAutomizerObserver]: Analyzing ICFG b.18.c [2021-12-19 17:19:15,812 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:19:15,812 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:19:15,812 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:19:15,812 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:19:15,812 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:19:15,812 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:19:15,812 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:19:15,812 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:19:15,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:15,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:19:15,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:15,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:15,851 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:15,851 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:19:15,851 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:19:15,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:15,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:19:15,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:15,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:15,852 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:15,853 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:19:15,856 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L15-3true [2021-12-19 17:19:15,857 INFO L793 eck$LassoCheckResult]: Loop: 5#L15-3true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 6#L10true assume !(main_~x~0#1 > main_~y~0#1); 11#L15-2true assume !(main_~y~0#1 > 0); 5#L15-3true [2021-12-19 17:19:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:15,860 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:19:15,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:15,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226291835] [2021-12-19 17:19:15,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:15,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:15,929 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:15,947 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:15,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash 41265, now seen corresponding path program 1 times [2021-12-19 17:19:15,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:15,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263971959] [2021-12-19 17:19:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:15,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:16,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:19:16,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263971959] [2021-12-19 17:19:16,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263971959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:19:16,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:19:16,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-19 17:19:16,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264072646] [2021-12-19 17:19:16,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:19:16,008 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:19:16,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:19:16,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:19:16,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:19:16,027 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 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, 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) [2021-12-19 17:19:16,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:19:16,053 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-12-19 17:19:16,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:19:16,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2021-12-19 17:19:16,058 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:19:16,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 8 states and 11 transitions. [2021-12-19 17:19:16,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-19 17:19:16,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-19 17:19:16,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-12-19 17:19:16,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:16,062 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-19 17:19:16,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-12-19 17:19:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-12-19 17:19:16,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-12-19 17:19:16,076 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-19 17:19:16,076 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-19 17:19:16,076 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:19:16,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-12-19 17:19:16,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-19 17:19:16,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:16,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:16,077 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:16,077 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 17:19:16,077 INFO L791 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 36#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 37#L15-3 [2021-12-19 17:19:16,077 INFO L793 eck$LassoCheckResult]: Loop: 37#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 38#L10 assume main_~x~0#1 > main_~y~0#1; 40#L11-2 assume !(main_~x~0#1 > 0); 37#L15-3 [2021-12-19 17:19:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-19 17:19:16,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333026615] [2021-12-19 17:19:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,081 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,084 INFO L85 PathProgramCache]: Analyzing trace with hash 40817, now seen corresponding path program 1 times [2021-12-19 17:19:16,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581209789] [2021-12-19 17:19:16,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:16,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:19:16,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581209789] [2021-12-19 17:19:16,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581209789] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:19:16,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:19:16,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-19 17:19:16,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695611620] [2021-12-19 17:19:16,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:19:16,095 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:19:16,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:19:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:19:16,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:19:16,095 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand has 3 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) [2021-12-19 17:19:16,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:19:16,112 INFO L93 Difference]: Finished difference Result 9 states and 12 transitions. [2021-12-19 17:19:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:19:16,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2021-12-19 17:19:16,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-12-19 17:19:16,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 12 transitions. [2021-12-19 17:19:16,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-19 17:19:16,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-19 17:19:16,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-12-19 17:19:16,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:16,115 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-19 17:19:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-12-19 17:19:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-12-19 17:19:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-12-19 17:19:16,116 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-19 17:19:16,116 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-19 17:19:16,116 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:19:16,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-12-19 17:19:16,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:19:16,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:16,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:16,117 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:19:16,117 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:19:16,117 INFO L791 eck$LassoCheckResult]: Stem: 57#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 58#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 59#L15-3 [2021-12-19 17:19:16,117 INFO L793 eck$LassoCheckResult]: Loop: 59#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 60#L10 assume !(main_~x~0#1 > main_~y~0#1); 61#L15-2 assume !!(main_~y~0#1 > 0);main_~y~0#1 := main_~y~0#1 - 1; 64#L15-2 assume !(main_~y~0#1 > 0); 59#L15-3 [2021-12-19 17:19:16,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-19 17:19:16,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515652726] [2021-12-19 17:19:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,121 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1279312, now seen corresponding path program 1 times [2021-12-19 17:19:16,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63993774] [2021-12-19 17:19:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,126 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash 889706514, now seen corresponding path program 1 times [2021-12-19 17:19:16,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128759535] [2021-12-19 17:19:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,155 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,195 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:16,196 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:16,196 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:16,196 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:16,196 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:19:16,196 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,196 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:16,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:16,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2021-12-19 17:19:16,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:16,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:16,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,278 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:16,280 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:19:16,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-19 17:19:16,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:16,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:16,299 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:16,299 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:19:16,317 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 [2021-12-19 17:19:16,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-19 17:19:16,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:16,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:16,338 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:16,338 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:19:16,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:16,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-19 17:19:16,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:16,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:16,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:16,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-19 17:19:16,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:16,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:16,464 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:19:16,469 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 [2021-12-19 17:19:16,470 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:16,470 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:16,470 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:16,470 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:16,470 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:19:16,470 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,470 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:16,470 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:16,470 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration3_Loop [2021-12-19 17:19:16,470 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:16,470 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:16,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,536 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:16,540 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:19:16,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,542 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-19 17:19:16,544 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:16,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:16,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:16,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:16,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:16,554 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:16,554 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:16,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:16,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:16,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,581 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-19 17:19:16,582 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:16,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:16,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:16,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:16,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:16,591 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:16,591 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:16,603 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:16,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:16,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,619 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-19 17:19:16,623 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:16,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:16,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:16,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:16,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:16,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:16,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:16,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:16,640 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:19:16,643 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:19:16,643 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:19:16,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 17:19:16,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-19 17:19:16,646 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:19:16,646 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:19:16,646 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:19:16,647 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-19 17:19:16,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:16,664 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:19:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:16,690 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:16,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:16,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:16,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 17:19:16,741 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 [2021-12-19 17:19:16,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:16,777 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 24 transitions. Complement of second has 6 states. [2021-12-19 17:19:16,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-19 17:19:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-12-19 17:19:16,781 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-19 17:19:16,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:16,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-19 17:19:16,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:16,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-19 17:19:16,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:16,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 24 transitions. [2021-12-19 17:19:16,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:19:16,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 16 states and 22 transitions. [2021-12-19 17:19:16,787 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-19 17:19:16,787 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-19 17:19:16,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2021-12-19 17:19:16,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:19:16,787 INFO L681 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2021-12-19 17:19:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2021-12-19 17:19:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-12-19 17:19:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-12-19 17:19:16,790 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-19 17:19:16,790 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-12-19 17:19:16,790 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:19:16,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-12-19 17:19:16,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:19:16,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:16,793 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:16,793 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:19:16,793 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:19:16,793 INFO L791 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 133#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 127#L10 [2021-12-19 17:19:16,793 INFO L793 eck$LassoCheckResult]: Loop: 127#L10 assume main_~x~0#1 > main_~y~0#1; 130#L11-2 assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1; 134#L11-2 assume !(main_~x~0#1 > 0); 126#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 127#L10 [2021-12-19 17:19:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,794 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:19:16,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527323574] [2021-12-19 17:19:16,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,803 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,812 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1363360, now seen corresponding path program 1 times [2021-12-19 17:19:16,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869412584] [2021-12-19 17:19:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 17:19:16,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 17:19:16,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869412584] [2021-12-19 17:19:16,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869412584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 17:19:16,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 17:19:16,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 17:19:16,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587993712] [2021-12-19 17:19:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 17:19:16,834 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-19 17:19:16,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 17:19:16,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 17:19:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 17:19:16,836 INFO L87 Difference]: Start difference. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 17:19:16,843 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-12-19 17:19:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 17:19:16,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2021-12-19 17:19:16,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:16,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 14 transitions. [2021-12-19 17:19:16,849 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-19 17:19:16,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-19 17:19:16,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2021-12-19 17:19:16,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:19:16,850 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2021-12-19 17:19:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2021-12-19 17:19:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-12-19 17:19:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:16,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-12-19 17:19:16,854 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-19 17:19:16,854 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-19 17:19:16,854 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:19:16,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-12-19 17:19:16,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-19 17:19:16,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:19:16,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:19:16,855 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-19 17:19:16,855 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-19 17:19:16,855 INFO L791 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 159#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 166#L15-3 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 161#L10 assume main_~x~0#1 > main_~y~0#1; 164#L11-2 [2021-12-19 17:19:16,855 INFO L793 eck$LassoCheckResult]: Loop: 164#L11-2 assume !!(main_~x~0#1 > 0);main_~x~0#1 := main_~x~0#1 - 1; 164#L11-2 [2021-12-19 17:19:16,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,856 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-19 17:19:16,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231126395] [2021-12-19 17:19:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,862 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,865 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2021-12-19 17:19:16,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486785181] [2021-12-19 17:19:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,875 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,877 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash 28699761, now seen corresponding path program 1 times [2021-12-19 17:19:16,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:19:16,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224673410] [2021-12-19 17:19:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:19:16,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:19:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,910 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:19:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:19:16,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:16,913 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:19:16,922 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:16,922 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:16,922 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:16,923 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:16,923 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:19:16,923 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,923 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:16,923 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:16,923 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2021-12-19 17:19:16,923 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:16,923 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:16,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:16,953 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:16,953 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:19:16,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,955 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) [2021-12-19 17:19:16,956 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 [2021-12-19 17:19:16,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:16,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:16,972 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:16,972 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: [] [2021-12-19 17:19:16,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:16,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:16,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:16,995 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) [2021-12-19 17:19:17,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:17,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:17,001 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 [2021-12-19 17:19:17,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:19:17,023 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:19:17,041 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 [2021-12-19 17:19:17,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:17,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:17,046 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) [2021-12-19 17:19:17,047 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 [2021-12-19 17:19:17,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:19:17,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:17,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-19 17:19:17,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:17,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:17,071 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) [2021-12-19 17:19:17,072 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 [2021-12-19 17:19:17,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:19:17,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:19:17,107 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:19:17,112 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 [2021-12-19 17:19:17,112 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:19:17,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:19:17,112 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:19:17,112 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:19:17,113 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:19:17,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:17,113 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:19:17,113 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:19:17,113 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.18.c_Iteration5_Loop [2021-12-19 17:19:17,113 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:19:17,113 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:19:17,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:17,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:17,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:19:17,150 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:19:17,150 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:19:17,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:17,151 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) [2021-12-19 17:19:17,153 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 [2021-12-19 17:19:17,154 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:17,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:17,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:17,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:17,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:17,165 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:17,165 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:17,183 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:17,205 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 [2021-12-19 17:19:17,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:17,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:17,206 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) [2021-12-19 17:19:17,207 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 [2021-12-19 17:19:17,209 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:17,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:17,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:17,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:17,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:17,222 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:19:17,222 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:19:17,233 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:19:17,248 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 [2021-12-19 17:19:17,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:17,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:17,249 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) [2021-12-19 17:19:17,251 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:19:17,251 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 [2021-12-19 17:19:17,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:19:17,258 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:19:17,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:19:17,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:19:17,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:19:17,260 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:19:17,260 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:19:17,265 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:19:17,267 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-19 17:19:17,267 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:19:17,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:19:17,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:19:17,268 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) [2021-12-19 17:19:17,269 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 [2021-12-19 17:19:17,270 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:19:17,270 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:19:17,270 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:19:17,270 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-19 17:19:17,291 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 [2021-12-19 17:19:17,291 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:19:17,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:19:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:17,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:19:17,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:19:17,313 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:19:17,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:19:17,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:19:17,313 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-19 17:19:17,313 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:17,316 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 2 states. [2021-12-19 17:19:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-19 17:19:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 17:19:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 8 transitions. [2021-12-19 17:19:17,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-19 17:19:17,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:17,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 5 letters. Loop has 1 letters. [2021-12-19 17:19:17,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:17,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-19 17:19:17,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:19:17,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-12-19 17:19:17,318 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:19:17,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2021-12-19 17:19:17,318 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 17:19:17,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 17:19:17,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 17:19:17,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:19:17,318 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:17,318 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:17,318 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:19:17,318 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 17:19:17,318 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 17:19:17,318 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:19:17,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 17:19:17,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:19:17 BoogieIcfgContainer [2021-12-19 17:19:17,323 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:19:17,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:19:17,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:19:17,323 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:19:17,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:19:15" (3/4) ... [2021-12-19 17:19:17,325 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 17:19:17,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:19:17,326 INFO L158 Benchmark]: Toolchain (without parser) took 1870.78ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 59.5MB in the beginning and 75.3MB in the end (delta: -15.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-12-19 17:19:17,326 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 73.4MB. Free memory was 44.6MB in the beginning and 44.5MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:17,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.67ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 69.0MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:19:17,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.88ms. Allocated memory is still 90.2MB. Free memory was 69.0MB in the beginning and 67.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:17,326 INFO L158 Benchmark]: Boogie Preprocessor took 11.22ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 67.0MB in the end (delta: 623.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 17:19:17,327 INFO L158 Benchmark]: RCFGBuilder took 130.18ms. Allocated memory is still 90.2MB. Free memory was 67.0MB in the beginning and 59.1MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-19 17:19:17,327 INFO L158 Benchmark]: BuchiAutomizer took 1554.56ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 58.6MB in the beginning and 75.3MB in the end (delta: -16.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-12-19 17:19:17,327 INFO L158 Benchmark]: Witness Printer took 2.11ms. Allocated memory is still 117.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:19:17,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 73.4MB. Free memory was 44.6MB in the beginning and 44.5MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.67ms. Allocated memory is still 90.2MB. Free memory was 59.3MB in the beginning and 69.0MB in the end (delta: -9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.88ms. Allocated memory is still 90.2MB. Free memory was 69.0MB in the beginning and 67.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.22ms. Allocated memory is still 90.2MB. Free memory was 67.6MB in the beginning and 67.0MB in the end (delta: 623.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 130.18ms. Allocated memory is still 90.2MB. Free memory was 67.0MB in the beginning and 59.1MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1554.56ms. Allocated memory was 90.2MB in the beginning and 117.4MB in the end (delta: 27.3MB). Free memory was 58.6MB in the beginning and 75.3MB in the end (delta: -16.7MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Witness Printer took 2.11ms. Allocated memory is still 117.4MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (3 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 2 locations. 3 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 39 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax197 hnf100 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp88 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 17:19:17,353 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 [2021-12-19 17:19:17,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE