./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 687269bb6882b72a3d48999f1e5c55a1d5283a94 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:16:06,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:16:06,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:16:06,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:16:06,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:16:06,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:16:06,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:16:06,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:16:06,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:16:06,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:16:06,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:16:06,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:16:06,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:16:06,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:16:06,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:16:07,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:16:07,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:16:07,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:16:07,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:16:07,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:16:07,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:16:07,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:16:07,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:16:07,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:16:07,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:16:07,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:16:07,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:16:07,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:16:07,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:16:07,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:16:07,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:16:07,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:16:07,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:16:07,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:16:07,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:16:07,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:16:07,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:16:07,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:16:07,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:16:07,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:16:07,033 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:16:07,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 21:16:07,065 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:16:07,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:16:07,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:16:07,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:16:07,068 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:16:07,068 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 21:16:07,068 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 21:16:07,068 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 21:16:07,069 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 21:16:07,069 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 21:16:07,069 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 21:16:07,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:16:07,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:16:07,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:16:07,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:16:07,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 21:16:07,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 21:16:07,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 21:16:07,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:16:07,071 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 21:16:07,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:16:07,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 21:16:07,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:16:07,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:16:07,073 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 21:16:07,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:16:07,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:16:07,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:16:07,074 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 21:16:07,075 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 21:16:07,075 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2020-11-29 21:16:07,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:16:07,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:16:07,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:16:07,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:16:07,399 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:16:07,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2020-11-29 21:16:07,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/data/75c09c349/fbaf4f8b8e804f218607c74f588325e9/FLAGaaa080dc1 [2020-11-29 21:16:07,954 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:16:07,955 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2020-11-29 21:16:07,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/data/75c09c349/fbaf4f8b8e804f218607c74f588325e9/FLAGaaa080dc1 [2020-11-29 21:16:08,321 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/data/75c09c349/fbaf4f8b8e804f218607c74f588325e9 [2020-11-29 21:16:08,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:16:08,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:16:08,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:08,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:16:08,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:16:08,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff8859f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08, skipping insertion in model container [2020-11-29 21:16:08,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:16:08,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:16:08,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:08,517 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:16:08,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:16:08,553 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:16:08,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08 WrapperNode [2020-11-29 21:16:08,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:16:08,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:08,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:16:08,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:16:08,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:16:08,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:16:08,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:16:08,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:16:08,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... [2020-11-29 21:16:08,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:16:08,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:16:08,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:16:08,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:16:08,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:16:08,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:16:08,856 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:16:08,856 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 21:16:08,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:08 BoogieIcfgContainer [2020-11-29 21:16:08,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:16:08,874 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 21:16:08,874 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 21:16:08,877 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 21:16:08,878 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:16:08,878 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 09:16:08" (1/3) ... [2020-11-29 21:16:08,880 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3454e54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:16:08, skipping insertion in model container [2020-11-29 21:16:08,880 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:16:08,880 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:08" (2/3) ... [2020-11-29 21:16:08,881 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3454e54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 09:16:08, skipping insertion in model container [2020-11-29 21:16:08,881 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 21:16:08,881 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:08" (3/3) ... [2020-11-29 21:16:08,882 INFO L373 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2020-11-29 21:16:08,949 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 21:16:08,950 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 21:16:08,950 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 21:16:08,950 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:16:08,950 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:16:08,950 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 21:16:08,950 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:16:08,950 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 21:16:08,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-29 21:16:08,988 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 21:16:08,989 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:08,989 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:08,993 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 21:16:08,993 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:08,993 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 21:16:08,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-29 21:16:08,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 21:16:08,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:08,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:08,995 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 21:16:08,995 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:09,002 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L25-2true [2020-11-29 21:16:09,002 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 12#L25true assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 10#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L25-2true [2020-11-29 21:16:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:09,007 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 21:16:09,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:09,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262141816] [2020-11-29 21:16:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:09,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:09,084 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:09,099 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:09,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:09,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1234440, now seen corresponding path program 1 times [2020-11-29 21:16:09,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:09,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95185742] [2020-11-29 21:16:09,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:09,114 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:09,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:09,121 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:09,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 29863591, now seen corresponding path program 1 times [2020-11-29 21:16:09,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:09,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519980894] [2020-11-29 21:16:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:09,132 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:09,138 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:09,141 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:09,284 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:09,286 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:09,286 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:09,286 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:09,286 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:09,286 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,286 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:09,287 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:09,287 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2020-11-29 21:16:09,287 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:09,287 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:09,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,457 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:09,458 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:09,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:09,480 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:09,481 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:09,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:09,526 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:09,527 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: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:09,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:09,576 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:09,577 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:09,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:09,608 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:09,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:09,704 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:09,707 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:09,707 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:09,707 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:09,707 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:09,707 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:09,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:09,708 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:09,708 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2020-11-29 21:16:09,708 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:09,708 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:09,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:09,869 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:09,874 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:09,882 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:09,885 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:09,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:09,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:09,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:09,893 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:09,894 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,902 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:09,942 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:09,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:09,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:09,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:09,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:09,969 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:09,969 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:09,981 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:10,014 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:10,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:10,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:10,017 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 21:16:10,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:10,020 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 21:16:10,020 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:10,033 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:10,070 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:10,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:10,072 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:10,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:10,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:10,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:10,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:10,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,085 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:10,088 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:16:10,089 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:10,096 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:10,096 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:10,096 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:10,097 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:10,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:10,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:10,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:10,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:10,257 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:16:10,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:10,371 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:10,372 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2020-11-29 21:16:10,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 40 states and 55 transitions. Complement of second has 8 states. [2020-11-29 21:16:10,423 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 [2020-11-29 21:16:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 21:16:10,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 21:16:10,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:10,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-29 21:16:10,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:10,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 8 letters. [2020-11-29 21:16:10,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:10,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 55 transitions. [2020-11-29 21:16:10,432 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-29 21:16:10,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 21 states and 30 transitions. [2020-11-29 21:16:10,436 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 21:16:10,436 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-29 21:16:10,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2020-11-29 21:16:10,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:10,437 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-29 21:16:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2020-11-29 21:16:10,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2020-11-29 21:16:10,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 21:16:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 24 transitions. [2020-11-29 21:16:10,458 INFO L714 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-11-29 21:16:10,458 INFO L594 BuchiCegarLoop]: Abstraction has 17 states and 24 transitions. [2020-11-29 21:16:10,458 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 21:16:10,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 24 transitions. [2020-11-29 21:16:10,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-29 21:16:10,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:10,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:10,460 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 21:16:10,460 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:10,460 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 103#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2020-11-29 21:16:10,461 INFO L796 eck$LassoCheckResult]: Loop: 106#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 97#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 98#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 105#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 106#L25 [2020-11-29 21:16:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 21:16:10,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:10,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630691761] [2020-11-29 21:16:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:10,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:10,469 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:10,471 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:10,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:10,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1328732, now seen corresponding path program 1 times [2020-11-29 21:16:10,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:10,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223005725] [2020-11-29 21:16:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:10,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:10,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:10,484 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:10,484 INFO L82 PathProgramCache]: Analyzing trace with hash 925773253, now seen corresponding path program 1 times [2020-11-29 21:16:10,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:10,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423922239] [2020-11-29 21:16:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:10,491 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:10,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:10,498 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:10,546 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:10,546 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:10,546 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:10,546 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:10,546 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:10,546 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,546 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:10,546 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:10,546 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2020-11-29 21:16:10,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:10,547 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:10,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:10,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:10,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:10,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:10,733 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:10,733 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:10,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:10,742 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,748 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:10,748 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:10,790 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:10,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:10,838 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,946 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:10,948 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:10,948 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:10,948 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:10,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:10,948 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:10,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:10,948 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:10,949 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:10,949 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2020-11-29 21:16:10,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:10,949 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:10,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:10,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:10,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:10,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,094 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:11,095 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:11,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:11,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:11,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:11,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:11,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:11,115 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:11,115 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,120 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:11,161 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:11,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:11,162 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:11,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:11,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:11,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:11,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:11,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:11,181 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:16:11,181 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:11,188 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:11,188 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:11,188 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:11,188 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,223 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:11,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:11,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:11,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:11,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:11,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:11,301 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 21:16:11,301 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-11-29 21:16:11,345 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 24 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2020-11-29 21:16:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-29 21:16:11,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 21:16:11,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:11,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 21:16:11,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:11,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 8 letters. [2020-11-29 21:16:11,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:11,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2020-11-29 21:16:11,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 21:16:11,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 21 states and 30 transitions. [2020-11-29 21:16:11,350 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-29 21:16:11,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-29 21:16:11,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 30 transitions. [2020-11-29 21:16:11,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:11,351 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-29 21:16:11,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 30 transitions. [2020-11-29 21:16:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-11-29 21:16:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 21:16:11,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2020-11-29 21:16:11,354 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2020-11-29 21:16:11,354 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2020-11-29 21:16:11,354 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 21:16:11,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2020-11-29 21:16:11,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 21:16:11,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:11,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:11,355 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 21:16:11,355 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:11,355 INFO L794 eck$LassoCheckResult]: Stem: 190#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 191#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 198#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2020-11-29 21:16:11,356 INFO L796 eck$LassoCheckResult]: Loop: 192#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 184#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 185#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 199#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 192#L33 [2020-11-29 21:16:11,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:11,356 INFO L82 PathProgramCache]: Analyzing trace with hash 31084, now seen corresponding path program 1 times [2020-11-29 21:16:11,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:11,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413026528] [2020-11-29 21:16:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:11,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:11,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:11,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:11,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 1 times [2020-11-29 21:16:11,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:11,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614267727] [2020-11-29 21:16:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:11,388 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:11,392 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:11,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:11,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:11,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1357271332, now seen corresponding path program 1 times [2020-11-29 21:16:11,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:11,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546613637] [2020-11-29 21:16:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:11,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:11,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:11,425 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:11,498 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:11,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:11,498 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:11,498 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:11,498 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:11,498 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,498 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:11,498 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:11,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2020-11-29 21:16:11,499 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:11,499 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:11,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,615 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:11,615 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:11,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:11,626 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,630 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:11,631 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:11,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:11,657 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:11,657 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:11,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:11,692 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:11,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:11,832 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:11,834 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:11,834 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:11,834 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:11,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:11,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:11,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,835 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:11,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:11,835 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2020-11-29 21:16:11,835 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:11,835 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:11,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:11,934 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:11,934 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:11,950 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:11,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:11,952 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:11,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:11,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:11,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:11,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:11,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:11,956 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:11,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:12,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:12,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:12,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:12,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:12,005 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:12,005 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,010 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:12,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:12,040 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:12,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:12,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:12,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:12,042 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:12,042 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:12,049 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:12,055 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:16:12,055 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,061 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:12,061 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:12,061 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:12,062 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 21:16:12,094 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:12,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:12,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:12,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:12,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:12,187 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:12,187 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-29 21:16:12,230 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 32 states and 48 transitions. Complement of second has 7 states. [2020-11-29 21:16:12,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:12,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:12,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-11-29 21:16:12,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2020-11-29 21:16:12,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:12,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-29 21:16:12,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:12,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2020-11-29 21:16:12,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:12,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2020-11-29 21:16:12,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 21:16:12,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 38 transitions. [2020-11-29 21:16:12,237 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2020-11-29 21:16:12,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-29 21:16:12,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 38 transitions. [2020-11-29 21:16:12,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:12,238 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 38 transitions. [2020-11-29 21:16:12,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 38 transitions. [2020-11-29 21:16:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-11-29 21:16:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 21:16:12,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2020-11-29 21:16:12,242 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-11-29 21:16:12,242 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-11-29 21:16:12,242 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 21:16:12,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2020-11-29 21:16:12,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-29 21:16:12,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:12,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:12,244 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-11-29 21:16:12,244 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:12,244 INFO L794 eck$LassoCheckResult]: Stem: 290#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 291#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 298#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 292#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 283#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 284#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 302#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2020-11-29 21:16:12,245 INFO L796 eck$LassoCheckResult]: Loop: 285#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 282#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 301#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 285#L26 [2020-11-29 21:16:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:12,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1357211759, now seen corresponding path program 1 times [2020-11-29 21:16:12,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:12,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612936495] [2020-11-29 21:16:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:12,252 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:12,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:12,260 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:12,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:12,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1419720, now seen corresponding path program 2 times [2020-11-29 21:16:12,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:12,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250227265] [2020-11-29 21:16:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:12,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:12,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:12,276 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:12,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:12,276 INFO L82 PathProgramCache]: Analyzing trace with hash -369493672, now seen corresponding path program 1 times [2020-11-29 21:16:12,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:12,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777663055] [2020-11-29 21:16:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:12,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:12,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:12,297 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:12,345 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:12,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:12,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:12,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:12,345 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:12,345 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,345 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:12,345 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:12,345 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2020-11-29 21:16:12,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:12,345 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:12,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,460 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:12,460 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:12,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:12,466 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:12,470 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:12,511 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:12,511 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:12,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:12,554 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,748 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:12,750 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:12,750 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:12,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:12,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:12,751 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:12,751 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,751 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:12,751 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:12,751 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2020-11-29 21:16:12,751 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:12,751 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:12,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:12,880 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:12,881 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:12,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:12,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:12,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:12,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:12,892 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 21:16:12,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:12,893 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 21:16:12,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,896 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:12,933 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:12,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:12,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:12,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:12,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:12,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:12,937 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:12,937 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,941 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:12,945 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:16:12,945 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:12,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:12,948 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:12,948 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:12,949 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:12,979 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:12,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:13,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:13,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:13,014 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:16:13,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:13,045 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:13,045 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-29 21:16:13,095 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 35 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 78 states and 116 transitions. Complement of second has 7 states. [2020-11-29 21:16:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-11-29 21:16:13,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2020-11-29 21:16:13,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:13,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 21:16:13,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:13,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2020-11-29 21:16:13,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:13,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 116 transitions. [2020-11-29 21:16:13,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-29 21:16:13,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 55 states and 80 transitions. [2020-11-29 21:16:13,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2020-11-29 21:16:13,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2020-11-29 21:16:13,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2020-11-29 21:16:13,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:13,102 INFO L691 BuchiCegarLoop]: Abstraction has 55 states and 80 transitions. [2020-11-29 21:16:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2020-11-29 21:16:13,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 42. [2020-11-29 21:16:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 21:16:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 63 transitions. [2020-11-29 21:16:13,113 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2020-11-29 21:16:13,122 INFO L594 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2020-11-29 21:16:13,122 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 21:16:13,123 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 63 transitions. [2020-11-29 21:16:13,127 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2020-11-29 21:16:13,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:13,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:13,127 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:16:13,128 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:13,128 INFO L794 eck$LassoCheckResult]: Stem: 450#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 451#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 459#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 460#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 476#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 475#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 472#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 470#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2020-11-29 21:16:13,128 INFO L796 eck$LassoCheckResult]: Loop: 446#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 482#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 465#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 445#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 446#L26-2 [2020-11-29 21:16:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash 876108449, now seen corresponding path program 1 times [2020-11-29 21:16:13,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259587489] [2020-11-29 21:16:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,134 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,137 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,139 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1529372, now seen corresponding path program 2 times [2020-11-29 21:16:13,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:13,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352121793] [2020-11-29 21:16:13,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,162 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:13,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1432445116, now seen corresponding path program 1 times [2020-11-29 21:16:13,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:13,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127263545] [2020-11-29 21:16:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,189 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,191 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:13,240 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:13,240 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:13,241 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:13,241 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:13,241 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:13,241 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,241 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:13,241 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:13,241 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2020-11-29 21:16:13,241 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:13,241 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:13,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,324 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:13,324 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:13,329 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:13,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:13,396 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:13,398 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:13,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:13,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:13,398 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:13,398 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:13,398 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,398 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:13,399 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:13,399 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2020-11-29 21:16:13,399 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:13,399 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:13,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,534 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:13,534 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,538 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:13,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:13,539 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:13,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:13,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:13,542 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:13,542 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:16:13,545 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,573 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:13,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:13,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:13,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:13,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:13,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:13,576 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:13,576 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:13,579 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:13,582 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:16:13,583 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:13,584 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:13,584 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:13,585 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:13,585 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,604 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:13,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:13,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:13,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:13,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:13,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:13,655 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 21:16:13,655 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28 Second operand 4 states. [2020-11-29 21:16:13,698 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 63 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 106 states and 158 transitions. Complement of second has 7 states. [2020-11-29 21:16:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:13,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-29 21:16:13,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-29 21:16:13,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:13,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-29 21:16:13,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:13,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 8 letters. [2020-11-29 21:16:13,702 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:13,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 158 transitions. [2020-11-29 21:16:13,703 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-11-29 21:16:13,704 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 90 states and 129 transitions. [2020-11-29 21:16:13,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2020-11-29 21:16:13,704 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2020-11-29 21:16:13,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 129 transitions. [2020-11-29 21:16:13,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:13,705 INFO L691 BuchiCegarLoop]: Abstraction has 90 states and 129 transitions. [2020-11-29 21:16:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 129 transitions. [2020-11-29 21:16:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-11-29 21:16:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 21:16:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 111 transitions. [2020-11-29 21:16:13,710 INFO L714 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2020-11-29 21:16:13,710 INFO L594 BuchiCegarLoop]: Abstraction has 75 states and 111 transitions. [2020-11-29 21:16:13,710 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 21:16:13,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 111 transitions. [2020-11-29 21:16:13,711 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2020-11-29 21:16:13,711 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:13,711 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:13,712 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:16:13,712 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:13,712 INFO L794 eck$LassoCheckResult]: Stem: 657#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 658#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 666#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 667#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 682#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 681#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 679#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 677#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 675#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 671#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2020-11-29 21:16:13,712 INFO L796 eck$LassoCheckResult]: Loop: 672#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 721#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 719#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 718#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 672#L33 [2020-11-29 21:16:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 2 times [2020-11-29 21:16:13,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:13,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130924040] [2020-11-29 21:16:13,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:13,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1696497, now seen corresponding path program 2 times [2020-11-29 21:16:13,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:13,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154642975] [2020-11-29 21:16:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:13,736 INFO L82 PathProgramCache]: Analyzing trace with hash -4707247, now seen corresponding path program 1 times [2020-11-29 21:16:13,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:13,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910466871] [2020-11-29 21:16:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:13,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:13,752 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:13,780 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:13,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:13,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:13,780 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:13,780 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:13,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:13,780 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:13,780 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2020-11-29 21:16:13,780 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:13,781 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:13,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:13,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:13,899 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,901 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:13,902 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:13,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:13,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:14,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:14,016 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:14,016 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:14,016 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:14,016 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:14,016 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:14,016 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,016 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:14,016 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:14,016 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2020-11-29 21:16:14,016 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:14,016 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:14,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,097 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:14,097 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,100 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:14,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:14,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:14,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:14,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:14,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:14,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:14,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:14,127 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:14,130 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:16:14,130 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:14,136 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:14,136 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:14,136 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:14,137 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,171 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:14,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:14,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:14,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:14,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:14,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:14,232 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:14,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2020-11-29 21:16:14,259 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 112 states and 173 transitions. Complement of second has 7 states. [2020-11-29 21:16:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-11-29 21:16:14,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 21:16:14,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:14,261 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:16:14,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:14,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:14,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:14,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:14,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:14,332 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:14,332 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2020-11-29 21:16:14,379 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 107 states and 160 transitions. Complement of second has 7 states. [2020-11-29 21:16:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:14,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 21:16:14,380 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 21:16:14,380 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:14,380 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:16:14,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:14,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:14,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:14,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:14,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:14,437 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:14,437 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48 Second operand 4 states. [2020-11-29 21:16:14,470 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 111 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 128 states and 203 transitions. Complement of second has 8 states. [2020-11-29 21:16:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-11-29 21:16:14,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2020-11-29 21:16:14,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:14,473 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-29 21:16:14,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:14,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-29 21:16:14,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:14,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 203 transitions. [2020-11-29 21:16:14,478 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 22 [2020-11-29 21:16:14,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 97 states and 147 transitions. [2020-11-29 21:16:14,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2020-11-29 21:16:14,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2020-11-29 21:16:14,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 147 transitions. [2020-11-29 21:16:14,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:14,481 INFO L691 BuchiCegarLoop]: Abstraction has 97 states and 147 transitions. [2020-11-29 21:16:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 147 transitions. [2020-11-29 21:16:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 66. [2020-11-29 21:16:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 21:16:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2020-11-29 21:16:14,490 INFO L714 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2020-11-29 21:16:14,490 INFO L594 BuchiCegarLoop]: Abstraction has 66 states and 100 transitions. [2020-11-29 21:16:14,490 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 21:16:14,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 100 transitions. [2020-11-29 21:16:14,491 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-11-29 21:16:14,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:14,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:14,492 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-11-29 21:16:14,492 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:16:14,492 INFO L794 eck$LassoCheckResult]: Stem: 1259#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1260#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1282#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1283#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 1286#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1285#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1268#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2020-11-29 21:16:14,492 INFO L796 eck$LassoCheckResult]: Loop: 1261#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1252#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1253#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1265#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1254#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1255#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1266#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1316#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1261#L33 [2020-11-29 21:16:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:14,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 1 times [2020-11-29 21:16:14,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:14,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236784031] [2020-11-29 21:16:14,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:14,497 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:14,501 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:14,502 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:14,503 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 1 times [2020-11-29 21:16:14,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:14,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552881578] [2020-11-29 21:16:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:14,516 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:14,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:14,521 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:14,522 INFO L82 PathProgramCache]: Analyzing trace with hash -725918680, now seen corresponding path program 1 times [2020-11-29 21:16:14,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:14,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317095459] [2020-11-29 21:16:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:14,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:14,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:14,534 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:14,536 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:14,638 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2020-11-29 21:16:14,653 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:14,653 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:14,653 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:14,653 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:14,653 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:14,653 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:14,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:14,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2020-11-29 21:16:14,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:14,653 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:14,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:14,783 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:14,783 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:14,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:14,794 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:14,799 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:14,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:14,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:14,832 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:14,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:14,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:14,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:14,878 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:14,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:14,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:15,119 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:15,121 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:15,121 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:15,121 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:15,121 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:15,121 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:15,121 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,121 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:15,121 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:15,121 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2020-11-29 21:16:15,121 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:15,121 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:15,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,208 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:15,208 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,212 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:15,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:15,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:15,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:15,214 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 21:16:15,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:15,215 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 21:16:15,215 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:15,221 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,256 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:15,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:15,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:15,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:15,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:15,259 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:15,259 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:16:15,262 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,283 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:15,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:15,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:15,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:15,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:15,289 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:15,289 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:16:15,301 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,336 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:15,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:15,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:15,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:15,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:15,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:15,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:15,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:15,345 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:15,349 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:16:15,349 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:15,352 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:15,352 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:15,352 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:15,352 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,372 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:15,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:15,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:15,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:15,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:16:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:15,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:15,457 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-29 21:16:15,457 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43 Second operand 5 states. [2020-11-29 21:16:15,590 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 100 transitions. cyclomatic complexity: 43. Second operand 5 states. Result 246 states and 366 transitions. Complement of second has 13 states. [2020-11-29 21:16:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 21:16:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2020-11-29 21:16:15,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2020-11-29 21:16:15,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:15,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2020-11-29 21:16:15,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:15,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2020-11-29 21:16:15,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:15,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 246 states and 366 transitions. [2020-11-29 21:16:15,595 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2020-11-29 21:16:15,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 246 states to 208 states and 314 transitions. [2020-11-29 21:16:15,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2020-11-29 21:16:15,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2020-11-29 21:16:15,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 314 transitions. [2020-11-29 21:16:15,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:15,599 INFO L691 BuchiCegarLoop]: Abstraction has 208 states and 314 transitions. [2020-11-29 21:16:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 314 transitions. [2020-11-29 21:16:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 188. [2020-11-29 21:16:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 21:16:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 287 transitions. [2020-11-29 21:16:15,613 INFO L714 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2020-11-29 21:16:15,613 INFO L594 BuchiCegarLoop]: Abstraction has 188 states and 287 transitions. [2020-11-29 21:16:15,613 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 21:16:15,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 287 transitions. [2020-11-29 21:16:15,615 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2020-11-29 21:16:15,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:15,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:15,616 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:16:15,616 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:16:15,616 INFO L794 eck$LassoCheckResult]: Stem: 1652#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1653#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1687#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1685#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1683#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1682#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1680#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1675#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1676#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1782#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1778#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2020-11-29 21:16:15,616 INFO L796 eck$LassoCheckResult]: Loop: 1771#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1761#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1762#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1746#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 1672#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1673#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1784#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1781#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 1771#L33 [2020-11-29 21:16:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:15,617 INFO L82 PathProgramCache]: Analyzing trace with hash -369493663, now seen corresponding path program 3 times [2020-11-29 21:16:15,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:15,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803437479] [2020-11-29 21:16:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:15,623 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:15,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:15,628 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:15,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:15,629 INFO L82 PathProgramCache]: Analyzing trace with hash -920272584, now seen corresponding path program 2 times [2020-11-29 21:16:15,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:15,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773612903] [2020-11-29 21:16:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:15,641 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:15,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:15,645 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash -742368616, now seen corresponding path program 2 times [2020-11-29 21:16:15,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:15,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972727578] [2020-11-29 21:16:15,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:15,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:15,670 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:15,672 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:15,743 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:15,743 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:15,743 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:15,743 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:15,743 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:15,743 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,743 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:15,743 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:15,743 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2020-11-29 21:16:15,743 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:15,743 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:15,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:15,821 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:15,822 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:15,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:15,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:15,827 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:15,854 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:15,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:15,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:16,041 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:16,043 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:16,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:16,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:16,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:16,043 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:16,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:16,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:16,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:16,043 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2020-11-29 21:16:16,043 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:16,043 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:16,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:16,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:16,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:16,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:16,136 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:16,138 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:16,140 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:16,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:16,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:16,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:16,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:16,143 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:16,143 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:16:16,145 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:16,167 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:16,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:16,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:16,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:16,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:16,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:16,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:16,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:16,173 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:16,176 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:16:16,176 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:16,180 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:16,181 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:16,181 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:16,181 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-29 21:16:16,201 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:16,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:16,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:16,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:16,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:16:16,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:16,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:16,360 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-29 21:16:16,360 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2020-11-29 21:16:16,478 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 330 states and 503 transitions. Complement of second has 13 states. [2020-11-29 21:16:16,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 21:16:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2020-11-29 21:16:16,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-29 21:16:16,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:16,479 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:16:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:16,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:16,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:16,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:16,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:16:16,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:16,552 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-29 21:16:16,552 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2020-11-29 21:16:16,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 326 states and 483 transitions. Complement of second has 15 states. [2020-11-29 21:16:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 21:16:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2020-11-29 21:16:16,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-29 21:16:16,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:16,660 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:16:16,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:16,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:16,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:16,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 21:16:16,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:16,732 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-29 21:16:16,732 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124 Second operand 5 states. [2020-11-29 21:16:16,826 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 287 transitions. cyclomatic complexity: 124. Second operand 5 states. Result 525 states and 786 transitions. Complement of second has 23 states. [2020-11-29 21:16:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 21:16:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 34 transitions. [2020-11-29 21:16:16,827 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 8 letters. [2020-11-29 21:16:16,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:16,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 19 letters. Loop has 8 letters. [2020-11-29 21:16:16,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:16,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 34 transitions. Stem has 11 letters. Loop has 16 letters. [2020-11-29 21:16:16,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:16,829 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 525 states and 786 transitions. [2020-11-29 21:16:16,840 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2020-11-29 21:16:16,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 525 states to 342 states and 512 transitions. [2020-11-29 21:16:16,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2020-11-29 21:16:16,846 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2020-11-29 21:16:16,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 512 transitions. [2020-11-29 21:16:16,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:16,847 INFO L691 BuchiCegarLoop]: Abstraction has 342 states and 512 transitions. [2020-11-29 21:16:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 512 transitions. [2020-11-29 21:16:16,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 205. [2020-11-29 21:16:16,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-11-29 21:16:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2020-11-29 21:16:16,872 INFO L714 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2020-11-29 21:16:16,872 INFO L594 BuchiCegarLoop]: Abstraction has 205 states and 317 transitions. [2020-11-29 21:16:16,872 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 21:16:16,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 205 states and 317 transitions. [2020-11-29 21:16:16,874 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2020-11-29 21:16:16,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:16,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:16,874 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2020-11-29 21:16:16,874 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:16:16,875 INFO L794 eck$LassoCheckResult]: Stem: 3285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3286#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3327#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3328#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 3362#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3335#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3299#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2020-11-29 21:16:16,875 INFO L796 eck$LassoCheckResult]: Loop: 3300#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3421#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3422#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3412#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 3414#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3470#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3469#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3415#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 3300#L33 [2020-11-29 21:16:16,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:16,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1365800207, now seen corresponding path program 2 times [2020-11-29 21:16:16,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:16,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570184642] [2020-11-29 21:16:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:16,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:16,897 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:16,898 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:16,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:16,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1729619210, now seen corresponding path program 1 times [2020-11-29 21:16:16,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:16,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895534942] [2020-11-29 21:16:16,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:16,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:16,907 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:16,908 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1535265306, now seen corresponding path program 1 times [2020-11-29 21:16:16,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:16,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553344101] [2020-11-29 21:16:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:16,922 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:16,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:16,934 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:17,036 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:17,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:17,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:17,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:17,037 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:17,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:17,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:17,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2020-11-29 21:16:17,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:17,037 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:17,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,150 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:17,150 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:17,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:17,156 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:17,156 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:17,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:17,180 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:17,180 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:17,202 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:17,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:17,309 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:17,311 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:17,311 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:17,311 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:17,311 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:17,311 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:17,311 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,311 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:17,311 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:17,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2020-11-29 21:16:17,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:17,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:17,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,426 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:17,426 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:17,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:17,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:17,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:17,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:17,433 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:17,433 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:16:17,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:17,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:17,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:17,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:17,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,459 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 21:16:17,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:17,459 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 21:16:17,459 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:17,461 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:17,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:17,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:17,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:17,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:17,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:17,485 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:17,485 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:17,487 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:17,491 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 21:16:17,491 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,492 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:17,493 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:17,493 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:17,493 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-29 21:16:17,512 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:17,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:17,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:17,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:17,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:17,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 21:16:17,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:17,594 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-29 21:16:17,594 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133 Second operand 5 states. [2020-11-29 21:16:17,705 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 205 states and 317 transitions. cyclomatic complexity: 133. Second operand 5 states. Result 490 states and 759 transitions. Complement of second has 12 states. [2020-11-29 21:16:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 21:16:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 30 transitions. [2020-11-29 21:16:17,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 8 letters. [2020-11-29 21:16:17,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:17,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 15 letters. Loop has 8 letters. [2020-11-29 21:16:17,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:17,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 30 transitions. Stem has 7 letters. Loop has 16 letters. [2020-11-29 21:16:17,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:17,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 490 states and 759 transitions. [2020-11-29 21:16:17,712 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-11-29 21:16:17,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 490 states to 285 states and 426 transitions. [2020-11-29 21:16:17,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2020-11-29 21:16:17,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2020-11-29 21:16:17,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 285 states and 426 transitions. [2020-11-29 21:16:17,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 21:16:17,718 INFO L691 BuchiCegarLoop]: Abstraction has 285 states and 426 transitions. [2020-11-29 21:16:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states and 426 transitions. [2020-11-29 21:16:17,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 193. [2020-11-29 21:16:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-11-29 21:16:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 295 transitions. [2020-11-29 21:16:17,739 INFO L714 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2020-11-29 21:16:17,739 INFO L594 BuchiCegarLoop]: Abstraction has 193 states and 295 transitions. [2020-11-29 21:16:17,740 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-29 21:16:17,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 193 states and 295 transitions. [2020-11-29 21:16:17,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 21:16:17,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 21:16:17,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 21:16:17,742 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1] [2020-11-29 21:16:17,743 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-29 21:16:17,743 INFO L794 eck$LassoCheckResult]: Stem: 4063#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 4064#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4084#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4088#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4085#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4087#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4081#L25 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 4082#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 4134#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 4131#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4128#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4130#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4141#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4140#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4137#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2020-11-29 21:16:17,743 INFO L796 eck$LassoCheckResult]: Loop: 4079#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 4074#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 4075#L25-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 4078#L25 assume 0 != main_#t~nondet2;havoc main_#t~nondet2; 4079#L26 [2020-11-29 21:16:17,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:17,744 INFO L82 PathProgramCache]: Analyzing trace with hash -725859107, now seen corresponding path program 1 times [2020-11-29 21:16:17,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:17,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3358948] [2020-11-29 21:16:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:17,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:17,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:17,769 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:17,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1479302, now seen corresponding path program 3 times [2020-11-29 21:16:17,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:17,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013522976] [2020-11-29 21:16:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:17,776 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:17,778 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:17,779 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:17,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:17,780 INFO L82 PathProgramCache]: Analyzing trace with hash -517142174, now seen corresponding path program 2 times [2020-11-29 21:16:17,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:16:17,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251339526] [2020-11-29 21:16:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:16:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:17,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 21:16:17,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 21:16:17,795 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 21:16:17,858 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:17,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:17,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:17,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:17,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 21:16:17,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:17,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:17,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2020-11-29 21:16:17,858 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:17,858 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:17,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:17,947 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:17,948 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 21:16:17,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:17,958 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:17,980 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:17,980 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_19=0} Honda state: {v_rep~unnamed0~0~false_19=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:18,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:18,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 21:16:18,018 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_19=1} Honda state: {v_rep~unnamed0~0~true_19=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 21:16:18,039 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 21:16:18,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 21:16:18,147 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 21:16:18,149 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 21:16:18,149 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 21:16:18,149 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 21:16:18,149 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 21:16:18,149 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 21:16:18,149 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,149 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 21:16:18,149 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 21:16:18,149 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2020-11-29 21:16:18,149 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 21:16:18,149 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 21:16:18,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:18,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:18,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:18,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 21:16:18,220 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 21:16:18,221 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,224 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:18,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:18,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:18,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:18,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:18,226 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:18,227 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:16:18,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:18,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:18,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:18,252 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:18,252 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:18,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 21:16:18,253 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 21:16:18,256 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,277 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 21:16:18,278 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 21:16:18,278 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 21:16:18,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 21:16:18,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 21:16:18,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 21:16:18,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 21:16:18,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 21:16:18,282 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 21:16:18,284 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 21:16:18,284 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e9091fb2-1e72-4456-86cd-93f2390db59f/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 21:16:18,286 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 21:16:18,286 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 21:16:18,286 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 21:16:18,287 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-29 21:16:18,306 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 21:16:18,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:18,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:18,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:18,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:18,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:18,362 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:18,362 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2020-11-29 21:16:18,392 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 302 states and 452 transitions. Complement of second has 7 states. [2020-11-29 21:16:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:18,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2020-11-29 21:16:18,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-29 21:16:18,393 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:18,393 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:16:18,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:18,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:18,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:18,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:18,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:18,442 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:18,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2020-11-29 21:16:18,496 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 313 states and 443 transitions. Complement of second has 7 states. [2020-11-29 21:16:18,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:18,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:18,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 21:16:18,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-29 21:16:18,497 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:18,498 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 21:16:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:16:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:18,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 21:16:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:16:18,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 21:16:18,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:16:18,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:16:18,552 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 21:16:18,552 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126 Second operand 4 states. [2020-11-29 21:16:18,593 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 193 states and 295 transitions. cyclomatic complexity: 126. Second operand 4 states. Result 423 states and 703 transitions. Complement of second has 8 states. [2020-11-29 21:16:18,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 21:16:18,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 21:16:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2020-11-29 21:16:18,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2020-11-29 21:16:18,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:18,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 19 letters. Loop has 4 letters. [2020-11-29 21:16:18,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:18,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 8 letters. [2020-11-29 21:16:18,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 21:16:18,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 423 states and 703 transitions. [2020-11-29 21:16:18,600 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:16:18,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 423 states to 0 states and 0 transitions. [2020-11-29 21:16:18,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 21:16:18,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 21:16:18,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 21:16:18,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 21:16:18,601 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:16:18,601 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:16:18,601 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:16:18,601 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-29 21:16:18,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:16:18,601 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 21:16:18,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 21:16:18,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 09:16:18 BoogieIcfgContainer [2020-11-29 21:16:18,607 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 21:16:18,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:16:18,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:16:18,608 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:16:18,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:08" (3/4) ... [2020-11-29 21:16:18,611 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 21:16:18,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:16:18,612 INFO L168 Benchmark]: Toolchain (without parser) took 10287.74 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 53.4 MB in the beginning and 44.4 MB in the end (delta: 8.9 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:18,613 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 56.4 MB in the beginning and 56.3 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:18,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.19 ms. Allocated memory is still 86.0 MB. Free memory was 53.2 MB in the beginning and 65.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:18,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.97 ms. Allocated memory is still 86.0 MB. Free memory was 65.5 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:18,614 INFO L168 Benchmark]: Boogie Preprocessor took 14.16 ms. Allocated memory is still 86.0 MB. Free memory was 64.2 MB in the beginning and 63.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:18,614 INFO L168 Benchmark]: RCFGBuilder took 266.10 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 54.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:18,615 INFO L168 Benchmark]: BuchiAutomizer took 9733.44 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 54.4 MB in the beginning and 44.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:16:18,615 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 151.0 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:16:18,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 56.4 MB in the beginning and 56.3 MB in the end (delta: 27.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 230.19 ms. Allocated memory is still 86.0 MB. Free memory was 53.2 MB in the beginning and 65.5 MB in the end (delta: -12.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.97 ms. Allocated memory is still 86.0 MB. Free memory was 65.5 MB in the beginning and 64.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.16 ms. Allocated memory is still 86.0 MB. Free memory was 64.2 MB in the beginning and 63.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 266.10 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 54.4 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9733.44 ms. Allocated memory was 86.0 MB in the beginning and 151.0 MB in the end (delta: 65.0 MB). Free memory was 54.4 MB in the beginning and 44.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 77.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.79 ms. Allocated memory is still 151.0 MB. Free memory is still 44.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (0 trivial, 7 deterministic, 3 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 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 7 locations. One deterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.6s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 6.9s. Construction of modules took 0.4s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 316 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 205 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 191 SDtfs, 249 SDslu, 111 SDs, 0 SdLazy, 311 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax150 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp100 dnf100 smp100 tf107 neg100 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...