./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:51:06,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:51:06,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:51:06,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:51:06,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:51:06,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:51:06,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:51:06,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:51:06,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:51:06,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:51:06,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:51:06,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:51:06,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:51:06,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:51:06,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:51:06,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:51:06,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:51:06,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:51:06,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:51:06,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:51:06,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:51:06,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:51:06,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:51:06,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:51:06,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:51:06,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:51:06,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:51:06,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:51:06,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:51:06,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:51:06,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:51:06,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:51:06,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:51:06,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:51:06,904 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:51:06,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:51:06,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:51:06,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:51:06,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:51:06,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:51:06,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:51:06,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-21 13:51:06,950 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:51:06,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:51:06,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:51:06,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:51:06,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:51:06,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:51:06,957 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:51:06,957 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-21 13:51:06,957 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-21 13:51:06,957 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-21 13:51:06,959 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-21 13:51:06,959 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-21 13:51:06,959 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-21 13:51:06,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:51:06,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:51:06,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:51:06,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:51:06,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-21 13:51:06,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-21 13:51:06,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-21 13:51:06,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:51:06,962 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-21 13:51:06,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:51:06,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-21 13:51:06,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:51:06,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:51:06,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:51:06,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:51:06,966 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-21 13:51:06,966 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_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7fe3843d41a84d22889162aaa1c2b6d18f44faeeac702eea9c45f49a2c72d4bd [2022-11-21 13:51:07,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:51:07,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:51:07,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:51:07,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:51:07,295 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:51:07,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2022-11-21 13:51:10,456 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:51:10,681 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:51:10,682 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2022-11-21 13:51:10,688 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/data/cfea76a90/ef03fb0cacdf498ca9e71c6d2daf6e29/FLAGd4caf476f [2022-11-21 13:51:10,704 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/data/cfea76a90/ef03fb0cacdf498ca9e71c6d2daf6e29 [2022-11-21 13:51:10,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:51:10,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:51:10,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:51:10,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:51:10,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:51:10,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48afa91a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10, skipping insertion in model container [2022-11-21 13:51:10,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:51:10,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:51:10,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:51:10,886 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:51:10,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:51:10,908 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:51:10,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10 WrapperNode [2022-11-21 13:51:10,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:51:10,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:51:10,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:51:10,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:51:10,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,940 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-21 13:51:10,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:51:10,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:51:10,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:51:10,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:51:10,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:51:10,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:51:10,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:51:10,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:51:10,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (1/1) ... [2022-11-21 13:51:10,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:10,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:10,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:11,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-21 13:51:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:51:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:51:11,123 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:51:11,125 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:51:11,195 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:51:11,202 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:51:11,202 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 13:51:11,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:11 BoogieIcfgContainer [2022-11-21 13:51:11,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:51:11,206 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-21 13:51:11,206 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-21 13:51:11,210 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-21 13:51:11,211 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:51:11,211 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 01:51:10" (1/3) ... [2022-11-21 13:51:11,212 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a4d2cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 01:51:11, skipping insertion in model container [2022-11-21 13:51:11,212 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:51:11,213 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:51:10" (2/3) ... [2022-11-21 13:51:11,213 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a4d2cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 01:51:11, skipping insertion in model container [2022-11-21 13:51:11,213 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-21 13:51:11,213 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:11" (3/3) ... [2022-11-21 13:51:11,215 INFO L332 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2022-11-21 13:51:11,274 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-21 13:51:11,274 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-21 13:51:11,275 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-21 13:51:11,275 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-21 13:51:11,275 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-21 13:51:11,275 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-21 13:51:11,275 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-21 13:51:11,276 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-21 13:51:11,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:11,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 13:51:11,299 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:51:11,299 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:51:11,305 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 13:51:11,305 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 13:51:11,305 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-21 13:51:11,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:11,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 13:51:11,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:51:11,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:51:11,307 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 13:51:11,308 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 13:51:11,316 INFO L748 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L18-2true [2022-11-21 13:51:11,316 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 4#L18true assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 6#L18-2true [2022-11-21 13:51:11,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:11,323 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-21 13:51:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:11,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457388314] [2022-11-21 13:51:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:11,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:11,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:11,456 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:11,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:11,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-11-21 13:51:11,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:11,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057414470] [2022-11-21 13:51:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:11,484 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:11,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:11,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:11,511 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-11-21 13:51:11,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:11,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875843198] [2022-11-21 13:51:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:11,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:11,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:11,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:11,655 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:11,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:11,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:11,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:11,656 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 13:51:11,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:11,656 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:11,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:11,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2022-11-21 13:51:11,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:11,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:11,701 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:11,727 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:11,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:11,756 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:11,761 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:11,842 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:11,843 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 13:51:11,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:11,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:11,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:11,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:11,862 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:11,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-21 13:51:11,892 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:11,892 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:11,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-21 13:51:11,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:11,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:11,899 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:11,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:11,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:11,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-21 13:51:11,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:11,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:11,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:11,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:11,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:11,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:11,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:11,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:11,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-21 13:51:12,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 13:51:12,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:12,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-21 13:51:12,069 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 13:51:12,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-11-21 13:51:12,076 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:12,076 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:12,076 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:12,076 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:12,076 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 13:51:12,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:12,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:12,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2022-11-21 13:51:12,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:12,077 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:12,080 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,091 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,098 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,114 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,122 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,204 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:12,209 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 13:51:12,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:12,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-21 13:51:12,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:12,231 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:12,231 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:12,231 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:12,238 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 13:51:12,238 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 13:51:12,259 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:12,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-21 13:51:12,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:12,294 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:12,295 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:12,295 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:12,295 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:12,301 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 13:51:12,301 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 13:51:12,320 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:12,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,340 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:12,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-21 13:51:12,352 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:12,352 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:12,352 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:12,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:12,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:12,356 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:12,356 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:12,363 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 13:51:12,375 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 13:51:12,375 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 13:51:12,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,391 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-21 13:51:12,394 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 13:51:12,394 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 13:51:12,394 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 13:51:12,395 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 13:51:12,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-21 13:51:12,401 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 13:51:12,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:12,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,458 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:51:12,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:12,472 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:51:12,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:12,530 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 13:51:12,533 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:12,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 31 transitions. Complement of second has 8 states. [2022-11-21 13:51:12,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-21 13:51:12,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:12,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2022-11-21 13:51:12,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-21 13:51:12,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:12,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 13:51:12,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:12,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-21 13:51:12,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:12,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-11-21 13:51:12,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 13:51:12,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-11-21 13:51:12,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2022-11-21 13:51:12,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2022-11-21 13:51:12,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-11-21 13:51:12,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:51:12,613 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 13:51:12,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-11-21 13:51:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-21 13:51:12,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:12,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2022-11-21 13:51:12,638 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 13:51:12,638 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-11-21 13:51:12,638 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-21 13:51:12,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2022-11-21 13:51:12,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 13:51:12,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:51:12,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:51:12,640 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-21 13:51:12,640 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 13:51:12,640 INFO L748 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 76#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 78#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 71#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 72#L18-2 [2022-11-21 13:51:12,640 INFO L750 eck$LassoCheckResult]: Loop: 72#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 77#L18 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 72#L18-2 [2022-11-21 13:51:12,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:12,641 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-11-21 13:51:12,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:12,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255531981] [2022-11-21 13:51:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:12,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:12,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:12,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:12,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2022-11-21 13:51:12,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:12,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711871511] [2022-11-21 13:51:12,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:12,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:12,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:12,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:12,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:12,665 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2022-11-21 13:51:12,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:12,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579927448] [2022-11-21 13:51:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:12,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:12,678 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:12,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:12,741 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:12,741 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:12,741 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:12,741 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:12,741 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 13:51:12,742 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,742 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:12,742 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:12,742 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2022-11-21 13:51:12,742 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:12,742 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:12,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,767 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,771 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,775 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:12,858 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:12,858 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 13:51:12,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-21 13:51:12,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:12,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:12,923 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:12,923 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:12,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,928 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-21 13:51:12,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:12,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:12,970 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:12,970 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:12,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:12,977 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:12,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-21 13:51:12,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:12,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:12,994 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:12,995 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:12,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:12,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:12,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,000 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-21 13:51:13,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:13,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:13,022 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:13,023 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:13,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,029 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-21 13:51:13,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:13,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:13,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,049 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-21 13:51:13,052 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 13:51:13,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:13,075 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 13:51:13,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,078 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:13,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:13,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:13,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:13,079 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 13:51:13,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:13,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:13,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2022-11-21 13:51:13,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:13,080 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:13,082 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,090 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,095 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,101 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,109 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,196 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:13,197 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 13:51:13,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,199 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,208 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:13,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:13,221 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:13,221 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:13,221 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:13,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-21 13:51:13,225 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 13:51:13,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 13:51:13,238 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:13,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,245 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-21 13:51:13,260 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:13,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:13,273 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:13,273 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:13,273 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:13,273 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:13,274 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:13,274 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:13,284 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:13,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,292 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,305 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:13,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:13,318 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:13,318 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:13,318 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:13,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-21 13:51:13,322 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 13:51:13,322 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 13:51:13,335 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:13,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,346 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,355 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:13,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:13,368 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:13,368 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:13,368 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:13,368 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:13,369 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:13,369 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:13,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-21 13:51:13,393 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:13,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,405 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-21 13:51:13,412 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:13,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:13,423 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:13,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:13,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:13,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:13,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:13,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:13,436 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 13:51:13,439 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-21 13:51:13,439 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-21 13:51:13,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,443 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-21 13:51:13,447 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 13:51:13,447 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 13:51:13,448 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 13:51:13,448 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 13:51:13,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,452 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 13:51:13,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:13,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:51:13,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:13,506 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:51:13,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:13,522 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 13:51:13,522 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:13,534 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 17 transitions. Complement of second has 5 states. [2022-11-21 13:51:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 13:51:13,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:13,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-21 13:51:13,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 13:51:13,537 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:13,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 13:51:13,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:13,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2022-11-21 13:51:13,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:13,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2022-11-21 13:51:13,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 13:51:13,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2022-11-21 13:51:13,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-21 13:51:13,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 13:51:13,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-11-21 13:51:13,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:51:13,540 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-21 13:51:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-11-21 13:51:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-21 13:51:13,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2022-11-21 13:51:13,542 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-21 13:51:13,543 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-11-21 13:51:13,543 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-21 13:51:13,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2022-11-21 13:51:13,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-21 13:51:13,544 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:51:13,544 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:51:13,544 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2022-11-21 13:51:13,544 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 13:51:13,545 INFO L748 eck$LassoCheckResult]: Stem: 133#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 134#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 137#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 129#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 130#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 138#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 135#L18-2 [2022-11-21 13:51:13,545 INFO L750 eck$LassoCheckResult]: Loop: 135#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 136#L18 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1;main_~y~0#1 := main_~y~0#1 - 1; 135#L18-2 [2022-11-21 13:51:13,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:13,546 INFO L85 PathProgramCache]: Analyzing trace with hash 889692233, now seen corresponding path program 2 times [2022-11-21 13:51:13,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:13,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895240307] [2022-11-21 13:51:13,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:13,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:13,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:13,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2022-11-21 13:51:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:13,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047129172] [2022-11-21 13:51:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:13,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:13,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:13,569 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:13,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:13,570 INFO L85 PathProgramCache]: Analyzing trace with hash 295744366, now seen corresponding path program 2 times [2022-11-21 13:51:13,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:13,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13685696] [2022-11-21 13:51:13,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:13,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:13,578 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:13,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:13,610 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:13,611 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:13,611 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:13,611 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:13,611 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 13:51:13,611 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,611 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:13,612 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:13,612 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2022-11-21 13:51:13,612 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:13,612 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:13,613 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,617 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,620 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,626 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,629 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,681 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:13,681 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 13:51:13,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,683 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:13,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:13,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-21 13:51:13,714 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:13,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:13,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,729 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:13,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:13,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-21 13:51:13,759 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:13,759 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:13,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,770 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:13,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:13,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-21 13:51:13,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,800 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 13:51:13,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:13,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-21 13:51:13,831 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 13:51:13,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-21 13:51:13,835 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:13,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:13,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:13,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:13,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 13:51:13,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:13,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:13,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2022-11-21 13:51:13,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:13,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:13,838 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,842 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,845 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,851 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,855 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:13,910 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:13,911 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 13:51:13,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,912 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-21 13:51:13,922 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:13,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:13,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:13,941 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:13,941 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:13,941 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:13,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:13,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:13,959 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:13,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:13,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:13,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:13,965 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:13,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:13,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:13,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:13,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:13,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:13,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-21 13:51:13,992 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 13:51:13,992 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 13:51:14,015 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:14,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,025 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:14,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:14,042 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:14,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:14,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:14,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:14,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:14,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:14,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-21 13:51:14,063 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 13:51:14,067 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 13:51:14,068 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 13:51:14,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,069 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-21 13:51:14,076 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 13:51:14,076 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 13:51:14,076 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 13:51:14,076 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-21 13:51:14,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,086 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 13:51:14,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:14,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:51:14,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:14,128 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:51:14,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:14,158 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 13:51:14,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:14,179 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2022-11-21 13:51:14,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 13:51:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-21 13:51:14,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 13:51:14,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:14,182 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 13:51:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:14,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:51:14,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:14,234 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:51:14,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:14,257 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 13:51:14,257 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:14,272 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 21 transitions. Complement of second has 5 states. [2022-11-21 13:51:14,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 13:51:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2022-11-21 13:51:14,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 13:51:14,276 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:14,277 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-21 13:51:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:14,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:51:14,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:14,328 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:51:14,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:14,346 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 13:51:14,347 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:14,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,400 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 24 transitions. Complement of second has 4 states. [2022-11-21 13:51:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 13:51:14,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2022-11-21 13:51:14,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2022-11-21 13:51:14,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:14,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2022-11-21 13:51:14,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:14,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-21 13:51:14,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:14,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2022-11-21 13:51:14,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 13:51:14,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2022-11-21 13:51:14,404 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2022-11-21 13:51:14,404 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-21 13:51:14,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-21 13:51:14,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-21 13:51:14,404 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-21 13:51:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-21 13:51:14,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2022-11-21 13:51:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2022-11-21 13:51:14,406 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-11-21 13:51:14,406 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2022-11-21 13:51:14,406 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-21 13:51:14,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2022-11-21 13:51:14,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-21 13:51:14,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-21 13:51:14,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-21 13:51:14,407 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-21 13:51:14,408 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-21 13:51:14,408 INFO L748 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 291#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 287#L18-2 [2022-11-21 13:51:14,408 INFO L750 eck$LassoCheckResult]: Loop: 287#L18-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 286#L18 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - 1;main_~y~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 287#L18-2 [2022-11-21 13:51:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2022-11-21 13:51:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:14,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849342956] [2022-11-21 13:51:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:14,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:14,428 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:14,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:14,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-11-21 13:51:14,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:14,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716552657] [2022-11-21 13:51:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:14,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:14,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:14,437 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:14,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2022-11-21 13:51:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:51:14,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865442692] [2022-11-21 13:51:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:51:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:51:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:14,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:51:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:51:14,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:51:14,528 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:14,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:14,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:14,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:14,529 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-21 13:51:14,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:14,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:14,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration4_Loop [2022-11-21 13:51:14,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:14,530 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:14,533 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,539 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,543 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,547 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,550 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,615 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:14,615 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-21 13:51:14,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,619 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:14,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:14,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-21 13:51:14,652 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:14,652 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3#1=4, ULTIMATE.start_main_~y~0#1=4} Honda state: {ULTIMATE.start_main_#t~nondet3#1=4, ULTIMATE.start_main_~y~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:14,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,656 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-21 13:51:14,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:14,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:14,683 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:14,683 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:14,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,695 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:14,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:14,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-21 13:51:14,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:14,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:14,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-11-21 13:51:14,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,727 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-21 13:51:14,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:14,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:14,752 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-21 13:51:14,752 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-21 13:51:14,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,757 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-21 13:51:14,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-21 13:51:14,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:14,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-11-21 13:51:14,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,776 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-21 13:51:14,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-21 13:51:14,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-21 13:51:14,810 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-21 13:51:14,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-11-21 13:51:14,815 INFO L210 LassoAnalysis]: Preferences: [2022-11-21 13:51:14,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-21 13:51:14,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-21 13:51:14,815 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-21 13:51:14,816 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-21 13:51:14,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-21 13:51:14,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-21 13:51:14,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration4_Loop [2022-11-21 13:51:14,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-21 13:51:14,816 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-21 13:51:14,817 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,826 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,830 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,839 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,842 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-21 13:51:14,905 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-21 13:51:14,905 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-21 13:51:14,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,907 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,916 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:14,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-21 13:51:14,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:14,929 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:14,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:14,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:14,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:14,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:14,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:14,947 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:14,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:14,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:14,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:14,956 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:14,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:14,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-21 13:51:14,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:14,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:14,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:14,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:14,984 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-21 13:51:14,984 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-21 13:51:15,001 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-21 13:51:15,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:15,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:15,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:15,007 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:15,012 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-21 13:51:15,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-21 13:51:15,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-21 13:51:15,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-21 13:51:15,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-21 13:51:15,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-21 13:51:15,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-21 13:51:15,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-21 13:51:15,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-21 13:51:15,035 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-21 13:51:15,039 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-21 13:51:15,039 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-21 13:51:15,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-21 13:51:15,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:51:15,041 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-21 13:51:15,049 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-21 13:51:15,049 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-21 13:51:15,050 INFO L513 LassoAnalysis]: Proved termination. [2022-11-21 13:51:15,050 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-21 13:51:15,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-21 13:51:15,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:15,059 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-21 13:51:15,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:51:15,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,076 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 13:51:15,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:51:15,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:51:15,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:51:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:51:15,099 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-21 13:51:15,100 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:15,109 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 18 transitions. Complement of second has 4 states. [2022-11-21 13:51:15,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-21 13:51:15,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:51:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-11-21 13:51:15,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 2 letters. [2022-11-21 13:51:15,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:15,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2022-11-21 13:51:15,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:15,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-21 13:51:15,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-21 13:51:15,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2022-11-21 13:51:15,113 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 13:51:15,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2022-11-21 13:51:15,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-21 13:51:15,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-21 13:51:15,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-21 13:51:15,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:51:15,114 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 13:51:15,114 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 13:51:15,114 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 13:51:15,115 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-21 13:51:15,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-21 13:51:15,115 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-21 13:51:15,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-21 13:51:15,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 01:51:15 BoogieIcfgContainer [2022-11-21 13:51:15,123 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-21 13:51:15,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:51:15,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:51:15,124 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:51:15,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:51:11" (3/4) ... [2022-11-21 13:51:15,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 13:51:15,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:51:15,129 INFO L158 Benchmark]: Toolchain (without parser) took 4420.60ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 118.5MB in the beginning and 114.6MB in the end (delta: 3.8MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2022-11-21 13:51:15,129 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 151.0MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:51:15,129 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.78ms. Allocated memory is still 151.0MB. Free memory was 118.1MB in the beginning and 109.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:51:15,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.11ms. Allocated memory is still 151.0MB. Free memory was 109.1MB in the beginning and 107.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:51:15,130 INFO L158 Benchmark]: Boogie Preprocessor took 16.98ms. Allocated memory is still 151.0MB. Free memory was 107.6MB in the beginning and 106.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:51:15,130 INFO L158 Benchmark]: RCFGBuilder took 245.39ms. Allocated memory is still 151.0MB. Free memory was 106.3MB in the beginning and 98.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 13:51:15,131 INFO L158 Benchmark]: BuchiAutomizer took 3917.14ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 98.2MB in the beginning and 114.6MB in the end (delta: -16.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-11-21 13:51:15,131 INFO L158 Benchmark]: Witness Printer took 4.88ms. Allocated memory is still 182.5MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:51:15,133 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 151.0MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.78ms. Allocated memory is still 151.0MB. Free memory was 118.1MB in the beginning and 109.1MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.11ms. Allocated memory is still 151.0MB. Free memory was 109.1MB in the beginning and 107.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.98ms. Allocated memory is still 151.0MB. Free memory was 107.6MB in the beginning and 106.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 245.39ms. Allocated memory is still 151.0MB. Free memory was 106.3MB in the beginning and 98.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3917.14ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 98.2MB in the beginning and 114.6MB in the end (delta: -16.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 4.88ms. Allocated memory is still 182.5MB. Free memory is still 114.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 33 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-21 13:51:15,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-21 13:51:15,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1eef77f0-374b-4802-bcd3-d7affba6b260/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE