./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD --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 d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:23:21,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:23:21,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:23:21,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:23:21,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:23:21,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:23:21,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:23:21,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:23:21,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:23:21,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:23:21,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:23:21,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:23:21,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:23:21,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:23:21,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:23:21,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:23:21,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:23:21,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:23:21,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:23:21,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:23:21,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:23:21,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:23:21,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:23:21,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:23:21,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:23:21,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:23:21,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:23:21,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:23:21,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:23:21,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:23:21,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:23:21,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:23:21,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:23:21,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:23:21,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:23:21,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:23:21,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:23:21,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:23:21,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:23:21,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:23:21,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:23:21,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:23:21,789 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:23:21,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:23:21,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:23:21,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:23:21,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:23:21,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:23:21,794 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:23:21,794 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:23:21,795 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:23:21,795 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:23:21,796 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:23:21,796 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:23:21,797 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:23:21,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:23:21,798 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:23:21,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:23:21,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:23:21,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:23:21,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:23:21,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:23:21,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:23:21,800 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:23:21,801 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:23:21,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:23:21,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:23:21,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:23:21,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:23:21,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:23:21,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:23:21,804 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:23:21,804 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_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d483d112ebc631f1c14642e780c42909cf25d334478fdf38ba7f61b34b8ee811 [2021-10-28 23:23:22,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:23:22,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:23:22,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:23:22,210 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:23:22,211 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:23:22,212 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-10-28 23:23:22,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/data/ea03a2daa/99c645fa1b40444dab6066df38dba760/FLAGd307a3e76 [2021-10-28 23:23:22,943 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:23:22,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b.c [2021-10-28 23:23:22,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/data/ea03a2daa/99c645fa1b40444dab6066df38dba760/FLAGd307a3e76 [2021-10-28 23:23:23,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/data/ea03a2daa/99c645fa1b40444dab6066df38dba760 [2021-10-28 23:23:23,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:23:23,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:23:23,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:23,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:23:23,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:23:23,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb8bb0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23, skipping insertion in model container [2021-10-28 23:23:23,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,330 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:23:23,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:23:23,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:23,650 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:23:23,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:23:23,693 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:23:23,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23 WrapperNode [2021-10-28 23:23:23,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:23:23,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:23,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:23:23,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:23:23,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,741 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:23:23,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:23:23,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:23:23,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:23:23,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:23:23,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:23:23,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:23:23,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:23:23,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (1/1) ... [2021-10-28 23:23:23,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:23,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:23,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:23:23,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:23:23,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:23:24,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:23:24,076 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 23:23:24,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:24 BoogieIcfgContainer [2021-10-28 23:23:24,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:23:24,083 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:23:24,083 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:23:24,088 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:23:24,089 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:23:24,089 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:23:23" (1/3) ... [2021-10-28 23:23:24,091 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e1fcf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:23:24, skipping insertion in model container [2021-10-28 23:23:24,091 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:23:24,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:23:23" (2/3) ... [2021-10-28 23:23:24,092 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e1fcf72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:23:24, skipping insertion in model container [2021-10-28 23:23:24,092 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:23:24,092 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:24" (3/3) ... [2021-10-28 23:23:24,094 INFO L389 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b.c [2021-10-28 23:23:24,164 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:23:24,165 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:23:24,165 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:23:24,165 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:23:24,165 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:23:24,166 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:23:24,166 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:23:24,166 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:23:24,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:24,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:24,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:23:24,211 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:23:24,217 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:23:24,218 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:23:24,218 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:23:24,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:24,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:24,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:23:24,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:23:24,221 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 23:23:24,221 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:23:24,230 INFO L791 eck$LassoCheckResult]: Stem: 6#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; 5#L17true assume main_~M~0 > 0; 3#L19-2true [2021-10-28 23:23:24,231 INFO L793 eck$LassoCheckResult]: Loop: 3#L19-2true assume !!(main_~x~0 != main_~M~0); 9#L19true assume main_~x~0 > main_~M~0;main_~x~0 := 0; 3#L19-2true [2021-10-28 23:23:24,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:24,238 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-28 23:23:24,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:24,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967920272] [2021-10-28 23:23:24,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:24,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:24,359 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:24,396 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2021-10-28 23:23:24,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:24,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752393851] [2021-10-28 23:23:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:24,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:24,429 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:24,443 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:24,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:24,445 INFO L85 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2021-10-28 23:23:24,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:24,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663733513] [2021-10-28 23:23:24,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:24,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:24,471 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:24,490 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:24,628 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:23:24,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:23:24,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:23:24,630 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:23:24,630 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:23:24,630 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:24,631 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:23:24,631 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:23:24,631 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2021-10-28 23:23:24,632 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:23:24,632 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:23:24,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:24,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:24,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:24,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:24,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:24,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:24,835 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:23:24,836 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:23:24,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:24,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:24,842 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:24,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:23:24,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:24,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:23:24,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:23:24,884 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: [] [2021-10-28 23:23:24,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:24,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:24,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:24,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:24,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:23:24,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:23:24,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:25,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:25,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:25,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:25,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:25,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:23:25,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:23:25,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:25,146 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:23:25,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:25,154 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:23:25,154 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:23:25,154 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:23:25,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:23:25,155 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:23:25,155 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:25,155 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:23:25,155 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:23:25,155 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration1_Lasso [2021-10-28 23:23:25,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:23:25,155 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:23:25,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:25,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:25,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:25,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:25,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:25,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:25,260 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:23:25,266 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:23:25,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:25,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:25,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:25,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:23:25,275 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:23:25,291 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:23:25,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:23:25,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:23:25,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:23:25,299 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:23:25,299 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:23:25,314 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:23:25,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:25,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:25,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:25,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:25,367 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:23:25,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:23:25,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:23:25,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:23:25,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:23:25,388 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:23:25,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:23:25,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:23:25,407 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:23:25,436 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2021-10-28 23:23:25,436 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 4 variables to zero. [2021-10-28 23:23:25,438 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:25,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:25,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:25,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:23:25,473 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:23:25,490 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-10-28 23:23:25,490 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:23:25,491 INFO L515 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] [2021-10-28 23:23:25,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:25,527 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-28 23:23:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:25,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 23:23:25,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:25,616 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:23:25,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:25,659 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-28 23:23:25,661 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:25,731 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 6 states. [2021-10-28 23:23:25,731 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 [2021-10-28 23:23:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:25,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-10-28 23:23:25,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-28 23:23:25,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:25,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-28 23:23:25,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:25,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-28 23:23:25,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:25,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2021-10-28 23:23:25,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:25,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2021-10-28 23:23:25,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-28 23:23:25,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 23:23:25,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-10-28 23:23:25,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:23:25,749 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 23:23:25,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-10-28 23:23:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-28 23:23:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-10-28 23:23:25,780 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 23:23:25,780 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-28 23:23:25,780 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:23:25,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-10-28 23:23:25,781 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:25,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:23:25,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:23:25,782 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-28 23:23:25,782 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:23:25,782 INFO L791 eck$LassoCheckResult]: Stem: 88#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; 86#L17 assume main_~M~0 > 0; 87#L19-2 assume !!(main_~x~0 != main_~M~0); 85#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 81#L19-2 [2021-10-28 23:23:25,782 INFO L793 eck$LassoCheckResult]: Loop: 81#L19-2 assume !!(main_~x~0 != main_~M~0); 82#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 81#L19-2 [2021-10-28 23:23:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2021-10-28 23:23:25,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:25,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685774307] [2021-10-28 23:23:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:25,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:25,792 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:25,798 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:25,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2021-10-28 23:23:25,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:25,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012817650] [2021-10-28 23:23:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:25,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:25,806 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:25,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:25,810 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:25,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:25,811 INFO L85 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2021-10-28 23:23:25,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:25,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247334796] [2021-10-28 23:23:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:25,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:25,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:25,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:23:25,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247334796] [2021-10-28 23:23:25,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247334796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:23:25,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020626480] [2021-10-28 23:23:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:25,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:23:25,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:25,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:23:25,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 23:23:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:25,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:23:25,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:26,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-10-28 23:23:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:26,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020626480] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:23:26,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:23:26,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-28 23:23:26,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541985391] [2021-10-28 23:23:26,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:23:26,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:23:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:23:26,121 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:26,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:23:26,153 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2021-10-28 23:23:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:23:26,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2021-10-28 23:23:26,155 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:26,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 10 transitions. [2021-10-28 23:23:26,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 23:23:26,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 23:23:26,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2021-10-28 23:23:26,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:23:26,157 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-28 23:23:26,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2021-10-28 23:23:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-10-28 23:23:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-10-28 23:23:26,159 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-10-28 23:23:26,159 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-10-28 23:23:26,159 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:23:26,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-10-28 23:23:26,160 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:26,160 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:23:26,160 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:23:26,161 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 23:23:26,161 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:23:26,161 INFO L791 eck$LassoCheckResult]: Stem: 129#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; 127#L17 assume main_~M~0 > 0; 128#L19-2 assume !!(main_~x~0 != main_~M~0); 124#L19 [2021-10-28 23:23:26,161 INFO L793 eck$LassoCheckResult]: Loop: 124#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 123#L19-2 assume !!(main_~x~0 != main_~M~0); 124#L19 [2021-10-28 23:23:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:26,162 INFO L85 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2021-10-28 23:23:26,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:26,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352122548] [2021-10-28 23:23:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:26,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:26,169 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:26,188 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2021-10-28 23:23:26,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:26,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813226894] [2021-10-28 23:23:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:26,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:26,198 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:26,207 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:26,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2021-10-28 23:23:26,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:26,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306809956] [2021-10-28 23:23:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:26,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:26,225 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:26,235 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:26,287 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:23:26,287 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:23:26,287 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:23:26,287 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:23:26,288 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:23:26,288 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:26,288 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:23:26,288 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:23:26,288 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2021-10-28 23:23:26,289 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:23:26,289 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:23:26,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:26,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:26,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:26,410 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:23:26,410 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:23:26,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:26,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:26,412 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:26,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:23:26,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:26,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:23:26,454 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:23:26,454 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:23:26,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:26,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:26,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:26,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:26,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:23:26,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:26,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 23:23:26,530 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:23:26,531 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:23:26,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:26,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:26,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:26,581 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:26,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 23:23:26,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:23:26,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:26,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:26,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:26,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:26,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:26,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 23:23:26,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:23:26,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:30,230 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:23:30,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:30,238 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:23:30,238 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:23:30,238 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:23:30,238 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:23:30,238 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:23:30,238 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:30,239 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:23:30,239 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:23:30,239 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration3_Loop [2021-10-28 23:23:30,239 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:23:30,239 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:23:30,240 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:30,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:30,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:30,365 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:23:30,365 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:23:30,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:30,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:30,367 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:30,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:23:30,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:23:30,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:23:30,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:23:30,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:23:30,394 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:23:30,394 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:23:30,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 23:23:30,412 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:23:30,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:30,456 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:30,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:30,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:30,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 23:23:30,468 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:23:30,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:23:30,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:23:30,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:23:30,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:23:30,482 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:23:30,483 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:23:30,508 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:23:30,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:30,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:30,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:30,556 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:30,563 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:23:30,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 23:23:30,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:23:30,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:23:30,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:23:30,574 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:23:30,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:23:30,577 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:23:30,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:23:30,596 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:23:30,602 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:23:30,602 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:23:30,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:30,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:30,610 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:30,622 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:23:30,622 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:23:30,622 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:23:30,622 INFO L515 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 [] [2021-10-28 23:23:30,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 23:23:30,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:30,674 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:23:30,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:30,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:23:30,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:30,728 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:23:30,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:30,803 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:23:30,803 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:30,815 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 14 transitions. Complement of second has 5 states. [2021-10-28 23:23:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:23:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-10-28 23:23:30,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-10-28 23:23:30,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:30,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 23:23:30,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:30,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-28 23:23:30,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:30,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2021-10-28 23:23:30,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:30,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2021-10-28 23:23:30,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-28 23:23:30,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-28 23:23:30,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-10-28 23:23:30,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:23:30,820 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-28 23:23:30,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-10-28 23:23:30,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-10-28 23:23:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-10-28 23:23:30,822 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-28 23:23:30,822 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-28 23:23:30,822 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:23:30,823 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-10-28 23:23:30,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-28 23:23:30,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:23:30,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:23:30,824 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-10-28 23:23:30,824 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-28 23:23:30,824 INFO L791 eck$LassoCheckResult]: Stem: 183#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; 182#L17 assume main_~M~0 > 0; 178#L19-2 assume !!(main_~x~0 != main_~M~0); 179#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 180#L19-2 assume !!(main_~x~0 != main_~M~0); 181#L19 [2021-10-28 23:23:30,824 INFO L793 eck$LassoCheckResult]: Loop: 181#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); 181#L19 [2021-10-28 23:23:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2021-10-28 23:23:30,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:30,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749553389] [2021-10-28 23:23:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:30,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:30,833 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:30,840 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:30,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:30,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2021-10-28 23:23:30,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:30,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158400418] [2021-10-28 23:23:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:30,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:30,849 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:30,854 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:30,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:30,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2021-10-28 23:23:30,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:23:30,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900261221] [2021-10-28 23:23:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:23:30,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:23:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:30,865 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:23:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:23:30,873 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:23:30,897 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:23:30,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:23:30,898 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:23:30,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:23:30,898 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:23:30,898 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:30,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:23:30,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:23:30,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2021-10-28 23:23:30,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:23:30,899 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:23:30,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:30,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:30,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:30,992 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:23:30,993 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:23:30,993 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:30,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:30,994 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:31,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:23:31,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:31,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 23:23:31,023 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:23:31,023 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 23:23:31,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:31,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:31,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:31,071 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:31,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:23:31,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:31,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 23:23:31,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:31,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:31,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:31,167 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:31,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:23:31,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:23:31,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 23:23:34,767 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:23:34,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:34,771 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:23:34,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:23:34,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:23:34,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:23:34,771 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:23:34,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:34,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:23:34,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:23:34,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b.c_Iteration4_Loop [2021-10-28 23:23:34,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:23:34,772 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:23:34,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:34,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:34,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:23:34,880 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:23:34,880 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:23:34,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:34,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:34,885 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:34,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:23:34,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:23:34,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:23:34,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:23:34,912 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-28 23:23:34,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:23:34,915 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-10-28 23:23:34,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:23:34,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 23:23:34,928 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:23:34,933 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:23:34,934 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 23:23:34,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:23:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:23:34,940 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:23:34,951 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:23:34,951 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:23:34,951 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:23:34,951 INFO L515 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 [] [2021-10-28 23:23:34,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 23:23:35,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:35,001 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:23:35,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:35,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:23:35,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:35,047 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:23:35,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:35,154 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-28 23:23:35,155 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:35,161 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2021-10-28 23:23:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-10-28 23:23:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-10-28 23:23:35,162 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 23:23:35,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:35,163 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:23:35,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:35,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:23:35,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:35,219 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:23:35,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:35,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:35,249 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 [2021-10-28 23:23:35,250 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:35,255 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 8 states and 9 transitions. Complement of second has 3 states. [2021-10-28 23:23:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-10-28 23:23:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-10-28 23:23:35,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 23:23:35,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:35,257 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 23:23:35,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:23:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:35,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:23:35,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:23:35,305 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 23:23:35,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:23:35,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-10-28 23:23:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:23:35,374 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 [2021-10-28 23:23:35,374 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:35,402 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 10 transitions. Complement of second has 4 states. [2021-10-28 23:23:35,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-28 23:23:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:23:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-28 23:23:35,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-28 23:23:35,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:35,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2021-10-28 23:23:35,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:35,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-28 23:23:35,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:23:35,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-28 23:23:35,407 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:23:35,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2021-10-28 23:23:35,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 23:23:35,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 23:23:35,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 23:23:35,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:23:35,408 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:23:35,408 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:23:35,408 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:23:35,408 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:23:35,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:23:35,412 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 23:23:35,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 23:23:35,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:23:35 BoogieIcfgContainer [2021-10-28 23:23:35,420 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:23:35,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:23:35,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:23:35,421 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:23:35,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:23:24" (3/4) ... [2021-10-28 23:23:35,426 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:23:35,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:23:35,430 INFO L168 Benchmark]: Toolchain (without parser) took 12123.13 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 88.0 MB in the beginning and 108.7 MB in the end (delta: -20.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:35,432 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 98.3 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:35,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.45 ms. Allocated memory is still 123.7 MB. Free memory was 87.8 MB in the beginning and 99.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:35,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.83 ms. Allocated memory is still 123.7 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:35,440 INFO L168 Benchmark]: Boogie Preprocessor took 23.34 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 97.2 MB in the end (delta: 809.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:35,446 INFO L168 Benchmark]: RCFGBuilder took 312.58 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 88.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:35,447 INFO L168 Benchmark]: BuchiAutomizer took 11337.01 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 88.9 MB in the beginning and 108.7 MB in the end (delta: -19.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:23:35,447 INFO L168 Benchmark]: Witness Printer took 5.10 ms. Allocated memory is still 148.9 MB. Free memory is still 108.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:23:35,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 123.7 MB. Free memory was 98.3 MB in the beginning and 98.3 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.45 ms. Allocated memory is still 123.7 MB. Free memory was 87.8 MB in the beginning and 99.4 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.83 ms. Allocated memory is still 123.7 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.34 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 97.2 MB in the end (delta: 809.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 312.58 ms. Allocated memory is still 123.7 MB. Free memory was 97.2 MB in the beginning and 88.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 11337.01 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 88.9 MB in the beginning and 108.7 MB in the end (delta: -19.8 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.10 ms. Allocated memory is still 148.9 MB. Free memory is still 108.7 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 x + -1 * M and consists of 4 locations. One deterministic module has affine ranking function 2 * M + -2 * x + 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 11.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 10.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. 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, 39 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf94 smp100 dnf143 smp85 tf104 neg95 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 7.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 23:23:35,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:23:35,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_565f3fd4-1150-4325-9b5a-01860d7a071a/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...