./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer --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 413fc6a41e04b7b618ff9ab274418b4a8dcf040d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:30:55,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:30:55,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:30:55,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:30:55,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:30:55,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:30:55,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:30:55,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:30:55,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:30:55,790 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:30:55,791 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:30:55,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:30:55,793 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:30:55,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:30:55,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:30:55,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:30:55,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:30:55,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:30:55,802 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:30:55,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:30:55,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:30:55,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:30:55,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:30:55,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:30:55,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:30:55,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:30:55,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:30:55,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:30:55,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:30:55,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:30:55,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:30:55,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:30:55,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:30:55,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:30:55,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:30:55,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:30:55,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:30:55,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:30:55,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:30:55,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:30:55,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:30:55,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:30:55,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:30:55,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:30:55,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:30:55,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:30:55,874 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:30:55,875 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:30:55,875 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:30:55,875 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:30:55,875 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:30:55,876 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:30:55,877 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:30:55,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:30:55,877 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:30:55,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:30:55,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:30:55,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:30:55,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:30:55,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:30:55,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:30:55,879 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:30:55,880 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:30:55,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:30:55,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:30:55,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:30:55,881 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:30:55,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:30:55,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:30:55,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:30:55,882 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:30:55,884 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:30:55,884 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:/tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 413fc6a41e04b7b618ff9ab274418b4a8dcf040d [2020-11-30 00:30:56,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:30:56,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:30:56,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:30:56,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:30:56,152 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:30:56,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2020-11-30 00:30:56,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/data/4969a9133/fb2d4ebdc86845c19cb977f8d1f8f2ba/FLAGe6f379a7e [2020-11-30 00:30:56,663 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:30:56,664 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2020-11-30 00:30:56,675 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/data/4969a9133/fb2d4ebdc86845c19cb977f8d1f8f2ba/FLAGe6f379a7e [2020-11-30 00:30:57,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/data/4969a9133/fb2d4ebdc86845c19cb977f8d1f8f2ba [2020-11-30 00:30:57,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:30:57,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:30:57,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:30:57,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:30:57,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:30:57,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e3a936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57, skipping insertion in model container [2020-11-30 00:30:57,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:30:57,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:30:57,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:30:57,270 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:30:57,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:30:57,312 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:30:57,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57 WrapperNode [2020-11-30 00:30:57,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:30:57,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:30:57,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:30:57,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:30:57,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:30:57,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:30:57,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:30:57,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:30:57,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,351 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... [2020-11-30 00:30:57,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:30:57,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:30:57,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:30:57,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:30:57,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:30:57,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:30:57,583 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:30:57,583 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:30:57,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:30:57 BoogieIcfgContainer [2020-11-30 00:30:57,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:30:57,589 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:30:57,589 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:30:57,593 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:30:57,594 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:30:57,594 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:30:57" (1/3) ... [2020-11-30 00:30:57,596 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14104e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:30:57, skipping insertion in model container [2020-11-30 00:30:57,596 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:30:57,596 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:30:57" (2/3) ... [2020-11-30 00:30:57,597 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@14104e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:30:57, skipping insertion in model container [2020-11-30 00:30:57,597 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:30:57,597 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:30:57" (3/3) ... [2020-11-30 00:30:57,598 INFO L373 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b.c [2020-11-30 00:30:57,661 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:30:57,661 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:30:57,661 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:30:57,661 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:30:57,662 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:30:57,662 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:30:57,662 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:30:57,662 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:30:57,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:30:57,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:30:57,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:30:57,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:30:57,693 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:30:57,693 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:30:57,693 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:30:57,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-30 00:30:57,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:30:57,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:30:57,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:30:57,694 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:30:57,695 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:30:57,700 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~M~0 > 0; 7#L19-2true [2020-11-30 00:30:57,700 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 != main_~M~0); 9#L19true assume main_~x~0 > main_~M~0;main_~x~0 := 0; 7#L19-2true [2020-11-30 00:30:57,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:57,705 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-30 00:30:57,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:57,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570189853] [2020-11-30 00:30:57,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:57,790 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:57,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:57,809 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:57,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:57,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2020-11-30 00:30:57,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:57,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923766283] [2020-11-30 00:30:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:57,821 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:57,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:57,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:57,827 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:57,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:57,829 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2020-11-30 00:30:57,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:57,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839915216] [2020-11-30 00:30:57,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:57,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:57,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:57,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:58,024 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:30:58,024 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:30:58,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:30:58,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:30:58,025 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:30:58,025 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:58,025 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:30:58,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:30:58,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2020-11-30 00:30:58,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:30:58,026 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:30:58,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,146 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:30:58,147 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:30:58,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:58,156 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:58,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:30:58,163 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:30:58,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:58,204 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:30:58,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:30:58,249 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:58,401 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:30:58,404 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:30:58,404 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:30:58,404 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:30:58,404 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:30:58,404 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:30:58,404 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:58,404 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:30:58,404 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:30:58,404 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2020-11-30 00:30:58,405 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:30:58,405 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:30:58,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:58,587 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:30:58,591 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:30:58,601 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:30:58,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:58,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:58,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:58,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:58,611 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:30:58,611 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:58,617 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:58,646 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:30:58,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:30:58,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:30:58,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:30:58,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:30:58,658 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:30:58,660 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:30:58,673 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:30:58,700 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2020-11-30 00:30:58,700 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:58,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:30:58,735 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2020-11-30 00:30:58,736 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:30:58,736 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~M~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~M~0 >= 0] [2020-11-30 00:30:58,783 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2020-11-30 00:30:58,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:58,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:30:58,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:58,986 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:30:58,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:30:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:59,006 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 [2020-11-30 00:30:59,007 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-30 00:30:59,080 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2020-11-30 00:30:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:30:59,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:30:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-30 00:30:59,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-30 00:30:59,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:59,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-30 00:30:59,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:59,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-30 00:30:59,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:30:59,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-30 00:30:59,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:30:59,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2020-11-30 00:30:59,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-30 00:30:59,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-30 00:30:59,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-30 00:30:59,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:30:59,103 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 00:30:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-30 00:30:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 00:30:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 00:30:59,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-11-30 00:30:59,127 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 00:30:59,127 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-30 00:30:59,128 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:30:59,128 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-11-30 00:30:59,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:30:59,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:30:59,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:30:59,129 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:30:59,129 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:30:59,130 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L17 assume main_~M~0 > 0; 88#L19-2 assume !!(main_~x~0 != main_~M~0); 87#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 83#L19-2 [2020-11-30 00:30:59,130 INFO L796 eck$LassoCheckResult]: Loop: 83#L19-2 assume !!(main_~x~0 != main_~M~0); 84#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 83#L19-2 [2020-11-30 00:30:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:59,131 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2020-11-30 00:30:59,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:59,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217445429] [2020-11-30 00:30:59,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,158 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:59,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:59,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2020-11-30 00:30:59,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:59,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342602030] [2020-11-30 00:30:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,185 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:59,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:59,189 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2020-11-30 00:30:59,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:59,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297173476] [2020-11-30 00:30:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:59,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297173476] [2020-11-30 00:30:59,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000114556] [2020-11-30 00:30:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-30 00:30:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:30:59,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:30:59,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:30:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:30:59,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:30:59,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-30 00:30:59,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624031525] [2020-11-30 00:30:59,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:30:59,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:30:59,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:30:59,349 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-30 00:30:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:30:59,376 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2020-11-30 00:30:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:30:59,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2020-11-30 00:30:59,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:30:59,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 10 transitions. [2020-11-30 00:30:59,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-30 00:30:59,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-30 00:30:59,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2020-11-30 00:30:59,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:30:59,379 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2020-11-30 00:30:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2020-11-30 00:30:59,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-30 00:30:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:30:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-30 00:30:59,380 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-30 00:30:59,380 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-30 00:30:59,380 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:30:59,380 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-30 00:30:59,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:30:59,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:30:59,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:30:59,381 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:30:59,382 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:30:59,382 INFO L794 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 124#L17 assume main_~M~0 > 0; 125#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2020-11-30 00:30:59,382 INFO L796 eck$LassoCheckResult]: Loop: 127#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 126#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2020-11-30 00:30:59,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:59,382 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-11-30 00:30:59,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:59,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863354848] [2020-11-30 00:30:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,387 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,389 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,390 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:59,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:59,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2020-11-30 00:30:59,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:59,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857272939] [2020-11-30 00:30:59,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,395 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,398 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,399 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:59,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:30:59,399 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2020-11-30 00:30:59,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:30:59,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028888060] [2020-11-30 00:30:59,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:30:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,404 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:30:59,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:30:59,409 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:30:59,428 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:30:59,428 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:30:59,428 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:30:59,436 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:30:59,436 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:30:59,436 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:59,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:30:59,437 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:30:59,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2020-11-30 00:30:59,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:30:59,437 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:30:59,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:59,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:59,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:30:59,589 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:30:59,589 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:30:59,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:59,596 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:59,600 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:30:59,601 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:30:59,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:59,642 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:59,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:30:59,647 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:30:59,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:30:59,677 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:30:59,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:30:59,730 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,247 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:31:02,249 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:02,250 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:02,250 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:02,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:02,250 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:02,250 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,250 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:02,250 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:02,250 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2020-11-30 00:31:02,250 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:02,250 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:02,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:02,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:02,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:02,368 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:02,369 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:02,375 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:02,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:02,377 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:02,377 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:02,377 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:02,380 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:02,381 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,385 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:02,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:02,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:02,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:31:02,427 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:02,437 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-30 00:31:02,437 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-30 00:31:02,445 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:02,490 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:02,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:02,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:02,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:02,493 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:31:02,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:02,495 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-30 00:31:02,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,500 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:02,506 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:31:02,506 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,515 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:31:02,515 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:31:02,515 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:02,515 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~M~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~M~0 + 1 Supporting invariants [] [2020-11-30 00:31:02,544 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:31:02,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:02,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:31:02,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:02,600 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:31:02,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:02,634 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 [2020-11-30 00:31:02,634 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-30 00:31:02,647 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2020-11-30 00:31:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:31:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:31:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-30 00:31:02,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-30 00:31:02,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:02,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-30 00:31:02,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:02,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-30 00:31:02,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:02,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2020-11-30 00:31:02,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:31:02,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2020-11-30 00:31:02,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-30 00:31:02,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-30 00:31:02,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2020-11-30 00:31:02,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:31:02,652 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-30 00:31:02,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2020-11-30 00:31:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-30 00:31:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-30 00:31:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2020-11-30 00:31:02,653 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-11-30 00:31:02,653 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2020-11-30 00:31:02,653 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:31:02,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2020-11-30 00:31:02,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:31:02,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:02,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:02,654 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-30 00:31:02,654 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:31:02,654 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L17 assume main_~M~0 > 0; 180#L19-2 assume !!(main_~x~0 != main_~M~0); 181#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 182#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2020-11-30 00:31:02,655 INFO L796 eck$LassoCheckResult]: Loop: 183#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 184#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2020-11-30 00:31:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:02,655 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2020-11-30 00:31:02,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:02,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329944008] [2020-11-30 00:31:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:02,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:02,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:02,677 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:02,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:02,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2020-11-30 00:31:02,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:02,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585340237] [2020-11-30 00:31:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:02,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:02,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:02,692 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:02,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:02,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2020-11-30 00:31:02,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:02,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314346152] [2020-11-30 00:31:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:02,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:02,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:02,712 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:02,736 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:02,737 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:02,737 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:02,737 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:02,737 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:31:02,737 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,737 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:02,737 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:02,737 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2020-11-30 00:31:02,737 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:02,737 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:02,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:02,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:02,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:02,886 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:02,886 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:02,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:31:02,910 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:02,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:31:02,915 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:02,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:31:02,956 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:31:03,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:31:03,012 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:05,090 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:31:05,093 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:31:05,093 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:31:05,093 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:31:05,093 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:31:05,093 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:31:05,093 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:05,093 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:31:05,093 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:31:05,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2020-11-30 00:31:05,094 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:31:05,094 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:31:05,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:05,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:05,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:31:05,204 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:31:05,204 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:05,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:31:05,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:31:05,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:31:05,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:31:05,234 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-30 00:31:05,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:31:05,236 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-30 00:31:05,237 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:31:05,245 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:31:05,249 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:31:05,250 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc0c8a4e-56ff-40ef-ba9d-5700a988c402/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:31:05,257 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:31:05,257 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:31:05,258 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:31:05,258 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~M~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-11-30 00:31:05,294 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:31:05,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:05,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:31:05,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:05,356 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:31:05,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:05,386 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 [2020-11-30 00:31:05,386 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-30 00:31:05,395 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2020-11-30 00:31:05,397 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 [2020-11-30 00:31:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:31:05,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2020-11-30 00:31:05,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-30 00:31:05,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:05,398 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:31:05,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:05,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:31:05,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:05,432 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:31:05,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:05,457 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:31:05,457 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-30 00:31:05,461 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2020-11-30 00:31:05,462 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 [2020-11-30 00:31:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:31:05,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2020-11-30 00:31:05,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-30 00:31:05,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:05,463 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:31:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:05,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:31:05,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:05,495 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:31:05,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:05,531 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:31:05,531 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2020-11-30 00:31:05,547 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2020-11-30 00:31:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:31:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:31:05,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:31:05,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-30 00:31:05,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:05,549 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-30 00:31:05,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:05,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-30 00:31:05,550 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:31:05,550 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-11-30 00:31:05,551 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:31:05,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-11-30 00:31:05,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:31:05,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:31:05,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:31:05,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:31:05,551 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:31:05,551 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:31:05,551 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:31:05,551 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:31:05,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:31:05,552 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:31:05,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:31:05,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:31:05 BoogieIcfgContainer [2020-11-30 00:31:05,557 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:31:05,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:31:05,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:31:05,557 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:31:05,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:30:57" (3/4) ... [2020-11-30 00:31:05,560 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:31:05,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:31:05,562 INFO L168 Benchmark]: Toolchain (without parser) took 8503.76 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 78.0 MB in the beginning and 54.3 MB in the end (delta: 23.7 MB). Peak memory consumption was 46.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:05,563 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 63.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:05,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.32 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 77.7 MB in the beginning and 105.9 MB in the end (delta: -28.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:05,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 127.9 MB. Free memory was 105.9 MB in the beginning and 104.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:05,564 INFO L168 Benchmark]: Boogie Preprocessor took 16.83 ms. Allocated memory is still 127.9 MB. Free memory was 104.5 MB in the beginning and 103.6 MB in the end (delta: 815.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:05,565 INFO L168 Benchmark]: RCFGBuilder took 228.02 ms. Allocated memory is still 127.9 MB. Free memory was 103.6 MB in the beginning and 95.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:05,566 INFO L168 Benchmark]: BuchiAutomizer took 7967.94 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 54.3 MB in the end (delta: 41.0 MB). Peak memory consumption was 43.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:05,566 INFO L168 Benchmark]: Witness Printer took 3.50 ms. Allocated memory is still 127.9 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:05,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 104.9 MB. Free memory is still 63.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.32 ms. Allocated memory was 104.9 MB in the beginning and 127.9 MB in the end (delta: 23.1 MB). Free memory was 77.7 MB in the beginning and 105.9 MB in the end (delta: -28.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 127.9 MB. Free memory was 105.9 MB in the beginning and 104.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.83 ms. Allocated memory is still 127.9 MB. Free memory was 104.5 MB in the beginning and 103.6 MB in the end (delta: 815.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 228.02 ms. Allocated memory is still 127.9 MB. Free memory was 103.6 MB in the beginning and 95.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 7967.94 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 54.3 MB in the end (delta: 41.0 MB). Peak memory consumption was 43.3 MB. Max. memory is 16.1 GB. * Witness Printer took 3.50 ms. Allocated memory is still 127.9 MB. Free memory is still 54.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * M + x and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 2 * M + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * M + -2 * x + 1 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 7.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 26 SDtfs, 23 SDslu, 3 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax196 hnf97 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf94 smp100 dnf143 smp85 tf104 neg95 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...