./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Sunset.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_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 a80d10d797b477078e6dad6d87594a2a0aea1065 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:20:04,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:20:04,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:20:04,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:20:04,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:20:04,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:20:04,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:20:04,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:20:04,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:20:04,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:20:04,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:20:04,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:20:04,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:20:04,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:20:04,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:20:04,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:20:04,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:20:04,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:20:04,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:20:04,836 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:20:04,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:20:04,840 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:20:04,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:20:04,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:20:04,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:20:04,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:20:04,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:20:04,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:20:04,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:20:04,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:20:04,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:20:04,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:20:04,868 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:20:04,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:20:04,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:20:04,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:20:04,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:20:04,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:20:04,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:20:04,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:20:04,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:20:04,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:20:04,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:20:04,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:20:04,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:20:04,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:20:04,940 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:20:04,941 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:20:04,941 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:20:04,941 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:20:04,942 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:20:04,942 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:20:04,943 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:20:04,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:20:04,944 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:20:04,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:20:04,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:20:04,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:20:04,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:20:04,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:20:04,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:20:04,946 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:20:04,946 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:20:04,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:20:04,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:20:04,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:20:04,947 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:20:04,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:20:04,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:20:04,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:20:04,949 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:20:04,952 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:20:04,952 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_89356119-58f1-455b-bb09-ca063ed0cf6b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a80d10d797b477078e6dad6d87594a2a0aea1065 [2020-11-28 03:20:05,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:20:05,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:20:05,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:20:05,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:20:05,392 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:20:05,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-11-28 03:20:05,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/data/422a90518/954f2e48603c460d902c720b03505e34/FLAGf0ea2f632 [2020-11-28 03:20:06,064 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:20:06,065 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/sv-benchmarks/c/termination-restricted-15/Sunset.c [2020-11-28 03:20:06,079 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/data/422a90518/954f2e48603c460d902c720b03505e34/FLAGf0ea2f632 [2020-11-28 03:20:06,380 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/data/422a90518/954f2e48603c460d902c720b03505e34 [2020-11-28 03:20:06,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:20:06,386 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:20:06,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:06,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:20:06,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:20:06,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@767d1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06, skipping insertion in model container [2020-11-28 03:20:06,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:20:06,429 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:20:06,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:06,624 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:20:06,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:20:06,686 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:20:06,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06 WrapperNode [2020-11-28 03:20:06,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:20:06,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:06,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:20:06,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:20:06,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,718 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:20:06,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:20:06,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:20:06,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:20:06,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... [2020-11-28 03:20:06,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:20:06,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:20:06,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:20:06,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:20:06,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:06,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:20:06,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:20:07,110 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:20:07,111 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:20:07,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:07 BoogieIcfgContainer [2020-11-28 03:20:07,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:20:07,115 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:20:07,115 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:20:07,120 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:20:07,121 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:20:07,121 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:20:06" (1/3) ... [2020-11-28 03:20:07,123 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76b7e427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:20:07, skipping insertion in model container [2020-11-28 03:20:07,123 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:20:07,123 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:20:06" (2/3) ... [2020-11-28 03:20:07,124 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@76b7e427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:20:07, skipping insertion in model container [2020-11-28 03:20:07,124 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:20:07,124 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:07" (3/3) ... [2020-11-28 03:20:07,126 INFO L373 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2020-11-28 03:20:07,212 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:20:07,213 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:20:07,213 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:20:07,213 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:20:07,213 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:20:07,213 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:20:07,213 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:20:07,214 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:20:07,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:20:07,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:07,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:07,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:07,267 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:20:07,267 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:07,267 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:20:07,268 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:20:07,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:07,270 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:07,270 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:07,270 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:20:07,270 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:07,280 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L13-1true [2020-11-28 03:20:07,282 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-1true assume !!(main_~i~0 > 10); 3#L10true assume 25 == main_~i~0;main_~i~0 := 30; 8#L10-2true assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 5#L13-1true [2020-11-28 03:20:07,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:07,292 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:20:07,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:07,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624425658] [2020-11-28 03:20:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:07,410 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:07,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:07,442 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:07,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:07,448 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2020-11-28 03:20:07,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:07,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815550193] [2020-11-28 03:20:07,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:07,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:07,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:07,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:07,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2020-11-28 03:20:07,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:07,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300462193] [2020-11-28 03:20:07,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:07,527 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:07,540 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:07,544 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:07,795 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2020-11-28 03:20:07,893 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:07,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:07,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:07,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:07,895 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:07,895 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:07,895 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:07,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:07,896 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-11-28 03:20:07,896 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:07,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:07,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:07,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:07,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:08,183 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:08,186 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:08,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:08,201 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:08,214 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:20:08,215 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_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:08,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:08,269 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:08,277 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:20:08,277 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_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:08,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:08,332 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:08,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:08,394 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 [2020-11-28 03:20:08,413 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:08,456 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:08,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:08,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:08,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:08,457 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:08,457 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:08,457 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:08,458 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:08,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2020-11-28 03:20:08,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:08,458 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:08,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:08,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:08,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:08,748 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:08,771 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:08,784 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 [2020-11-28 03:20:08,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:08,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:08,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:08,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:08,812 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:08,813 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:08,828 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:08,884 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 [2020-11-28 03:20:08,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:08,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:08,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:08,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:08,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:08,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:08,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:08,897 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:08,907 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:08,907 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:08,917 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:08,917 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:08,918 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:08,918 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2020-11-28 03:20:08,959 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:09,051 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:09,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:09,072 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:09,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:09,138 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 [2020-11-28 03:20:09,140 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-11-28 03:20:09,210 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 27 states and 35 transitions. Complement of second has 6 states. [2020-11-28 03:20:09,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:20:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2020-11-28 03:20:09,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-28 03:20:09,219 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:09,220 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:09,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:09,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:09,252 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:09,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:09,266 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:09,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:09,302 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:20:09,302 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2020-11-28 03:20:09,400 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 28 states and 38 transitions. Complement of second has 8 states. [2020-11-28 03:20:09,402 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 [2020-11-28 03:20:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:20:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2020-11-28 03:20:09,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-28 03:20:09,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:09,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:20:09,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:09,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-28 03:20:09,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:09,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2020-11-28 03:20:09,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:09,421 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2020-11-28 03:20:09,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-28 03:20:09,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 03:20:09,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2020-11-28 03:20:09,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:09,424 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2020-11-28 03:20:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2020-11-28 03:20:09,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2020-11-28 03:20:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:20:09,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2020-11-28 03:20:09,458 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-11-28 03:20:09,458 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2020-11-28 03:20:09,459 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:20:09,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2020-11-28 03:20:09,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:09,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:09,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:09,462 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:20:09,462 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:09,462 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 127#L13-1 assume !!(main_~i~0 > 10); 130#L10 assume !(25 == main_~i~0); 123#L10-2 [2020-11-28 03:20:09,463 INFO L796 eck$LassoCheckResult]: Loop: 123#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 128#L13-1 assume !!(main_~i~0 > 10); 122#L10 assume 25 == main_~i~0;main_~i~0 := 30; 123#L10-2 [2020-11-28 03:20:09,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2020-11-28 03:20:09,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:09,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916068978] [2020-11-28 03:20:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:09,481 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:09,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:09,485 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:09,486 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2020-11-28 03:20:09,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:09,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806928581] [2020-11-28 03:20:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:09,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:09,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:09,516 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:09,517 INFO L82 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2020-11-28 03:20:09,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:09,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437079042] [2020-11-28 03:20:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:09,528 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:09,542 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:09,549 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:09,590 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:09,590 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:09,590 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:09,590 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:09,590 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:09,590 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:09,591 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:09,591 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:09,591 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-11-28 03:20:09,591 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:09,591 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:09,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:09,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:09,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:09,663 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:09,663 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:09,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:09,667 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:09,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:20:09,673 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_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:09,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:09,723 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:09,729 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:20:09,730 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:09,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:09,781 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:09,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:09,838 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 [2020-11-28 03:20:09,845 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:09,889 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:09,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:09,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:09,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:09,890 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:09,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:09,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:09,890 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:09,890 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2020-11-28 03:20:09,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:09,891 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:09,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:09,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:09,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:10,074 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-11-28 03:20:10,090 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:10,090 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:10,111 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:10,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:10,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:10,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:10,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:10,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:10,118 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:10,123 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:10,177 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 [2020-11-28 03:20:10,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:10,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:10,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:10,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:10,187 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:10,187 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:10,193 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:10,233 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 [2020-11-28 03:20:10,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:10,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:10,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:10,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:10,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:10,238 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:10,238 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:10,245 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:10,255 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:10,255 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:10,285 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:10,286 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:10,286 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:10,286 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2020-11-28 03:20:10,314 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:10,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:10,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:10,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:10,364 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:10,379 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 [2020-11-28 03:20:10,379 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-28 03:20:10,425 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 34 transitions. Complement of second has 5 states. [2020-11-28 03:20:10,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:10,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:10,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-28 03:20:10,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2020-11-28 03:20:10,427 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:10,427 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:20:10,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:10,428 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2020-11-28 03:20:10,428 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:10,428 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2020-11-28 03:20:10,430 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:20:10,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2020-11-28 03:20:10,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-28 03:20:10,431 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-28 03:20:10,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2020-11-28 03:20:10,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:10,432 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2020-11-28 03:20:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2020-11-28 03:20:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-11-28 03:20:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:20:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2020-11-28 03:20:10,436 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-11-28 03:20:10,436 INFO L594 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2020-11-28 03:20:10,436 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:20:10,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2020-11-28 03:20:10,437 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:20:10,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:10,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:10,438 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:20:10,438 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:10,438 INFO L794 eck$LassoCheckResult]: Stem: 197#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 198#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 199#L13-1 [2020-11-28 03:20:10,438 INFO L796 eck$LassoCheckResult]: Loop: 199#L13-1 assume !!(main_~i~0 > 10); 200#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 199#L13-1 [2020-11-28 03:20:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2020-11-28 03:20:10,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:10,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885172326] [2020-11-28 03:20:10,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:10,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885172326] [2020-11-28 03:20:10,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:20:10,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:20:10,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112496840] [2020-11-28 03:20:10,484 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:20:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:10,485 INFO L82 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2020-11-28 03:20:10,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:10,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226644084] [2020-11-28 03:20:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:10,492 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:10,496 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:10,497 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:10,529 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:10,530 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:10,530 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:10,530 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:10,530 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:10,530 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:10,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:10,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:10,531 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-11-28 03:20:10,531 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:10,531 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:10,532 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:10,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:10,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:10,737 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2020-11-28 03:20:10,846 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:10,846 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:10,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:10,859 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:10,871 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:20:10,872 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_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:10,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:10,930 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:20:10,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:10,996 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:11,003 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:11,046 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:11,046 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:11,046 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:11,046 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:11,046 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:11,046 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:11,047 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:11,047 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:11,047 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2020-11-28 03:20:11,047 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:11,047 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:11,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:11,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:11,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:11,155 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:11,155 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:11,166 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 [2020-11-28 03:20:11,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:11,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:11,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:11,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:11,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:11,173 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:11,173 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:11,182 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:11,191 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:11,191 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:11,204 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:11,204 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:11,204 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:11,205 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:11,248 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:11,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,294 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:11,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,326 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 [2020-11-28 03:20:11,326 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-28 03:20:11,362 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 42 states and 66 transitions. Complement of second has 5 states. [2020-11-28 03:20:11,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:20:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:11,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:20:11,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:11,365 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:11,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:11,414 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:11,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:11,442 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:20:11,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 Second operand 4 states. [2020-11-28 03:20:11,495 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 44 states and 70 transitions. Complement of second has 7 states. [2020-11-28 03:20:11,498 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 [2020-11-28 03:20:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:20:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-28 03:20:11,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:20:11,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:11,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:20:11,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:11,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:20:11,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:11,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2020-11-28 03:20:11,503 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-11-28 03:20:11,504 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2020-11-28 03:20:11,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2020-11-28 03:20:11,505 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2020-11-28 03:20:11,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2020-11-28 03:20:11,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:11,507 INFO L691 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2020-11-28 03:20:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2020-11-28 03:20:11,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-11-28 03:20:11,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:20:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2020-11-28 03:20:11,521 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2020-11-28 03:20:11,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:11,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:20:11,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:20:11,526 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. Second operand 3 states. [2020-11-28 03:20:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:11,658 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-11-28 03:20:11,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:20:11,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2020-11-28 03:20:11,662 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:20:11,664 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2020-11-28 03:20:11,664 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-11-28 03:20:11,664 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-28 03:20:11,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2020-11-28 03:20:11,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:11,664 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2020-11-28 03:20:11,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2020-11-28 03:20:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-11-28 03:20:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:20:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2020-11-28 03:20:11,668 INFO L714 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-28 03:20:11,668 INFO L594 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2020-11-28 03:20:11,668 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:20:11,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2020-11-28 03:20:11,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:20:11,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:11,674 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:11,674 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-11-28 03:20:11,675 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:11,675 INFO L794 eck$LassoCheckResult]: Stem: 441#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 442#L13-1 assume !!(main_~i~0 > 10); 453#L10 assume !(25 == main_~i~0); 457#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 437#L10 assume !(25 == main_~i~0); 438#L10-2 [2020-11-28 03:20:11,675 INFO L796 eck$LassoCheckResult]: Loop: 438#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 443#L13-1 assume !!(main_~i~0 > 10); 444#L10 assume 25 == main_~i~0;main_~i~0 := 30; 438#L10-2 [2020-11-28 03:20:11,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2020-11-28 03:20:11,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496911987] [2020-11-28 03:20:11,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:11,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:11,694 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:11,696 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:11,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,697 INFO L82 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2020-11-28 03:20:11,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002819877] [2020-11-28 03:20:11,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:11,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:11,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:11,726 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:11,727 INFO L82 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2020-11-28 03:20:11,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:11,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248245192] [2020-11-28 03:20:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:11,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:11,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:11,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:11,801 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:11,801 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:11,801 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:11,801 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:11,801 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:11,802 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:11,802 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:11,802 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:11,802 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-11-28 03:20:11,802 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:11,802 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:11,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:11,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:11,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:11,899 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:11,899 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:11,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:11,908 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:11,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:11,964 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:11,978 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:12,022 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:12,022 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:12,022 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:12,022 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:12,022 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:12,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:12,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:12,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:12,023 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2020-11-28 03:20:12,023 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:12,023 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:12,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,115 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:12,115 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:12,126 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 [2020-11-28 03:20:12,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:12,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:12,129 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:12,129 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:12,129 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:12,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:12,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:12,134 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:12,141 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:12,142 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:12,146 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:12,146 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:12,146 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:12,146 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:12,190 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:12,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,238 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:12,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:12,254 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 [2020-11-28 03:20:12,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:20:12,286 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2020-11-28 03:20:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:12,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:12,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:20:12,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:12,288 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:12,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:12,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,320 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:12,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:12,337 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:20:12,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:20:12,359 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 28 states and 41 transitions. Complement of second has 5 states. [2020-11-28 03:20:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:12,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:12,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:20:12,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:12,360 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:12,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:12,408 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:20:12,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:12,425 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:20:12,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:20:12,454 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 31 states and 47 transitions. Complement of second has 6 states. [2020-11-28 03:20:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:12,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2020-11-28 03:20:12,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:20:12,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:12,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-28 03:20:12,456 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:12,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2020-11-28 03:20:12,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:12,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2020-11-28 03:20:12,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:20:12,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2020-11-28 03:20:12,460 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 03:20:12,460 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2020-11-28 03:20:12,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2020-11-28 03:20:12,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:12,460 INFO L691 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2020-11-28 03:20:12,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2020-11-28 03:20:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2020-11-28 03:20:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:20:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2020-11-28 03:20:12,462 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-28 03:20:12,463 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-28 03:20:12,463 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:20:12,463 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2020-11-28 03:20:12,463 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:20:12,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:12,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:12,464 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:20:12,464 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:12,464 INFO L794 eck$LassoCheckResult]: Stem: 664#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 665#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2020-11-28 03:20:12,464 INFO L796 eck$LassoCheckResult]: Loop: 666#L13-1 assume !!(main_~i~0 > 10); 660#L10 assume !(25 == main_~i~0); 661#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 666#L13-1 [2020-11-28 03:20:12,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,465 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2020-11-28 03:20:12,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:12,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040921755] [2020-11-28 03:20:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:12,478 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:12,484 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:12,486 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:12,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,488 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2020-11-28 03:20:12,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:12,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123862903] [2020-11-28 03:20:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:12,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:12,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:12,503 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:12,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:12,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2020-11-28 03:20:12,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:12,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121809522] [2020-11-28 03:20:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:12,515 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:12,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:12,527 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:12,556 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:12,556 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:12,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:12,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:12,556 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:12,556 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:12,556 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:12,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:12,557 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-11-28 03:20:12,557 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:12,557 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:12,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,782 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2020-11-28 03:20:12,799 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:12,799 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:12,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:12,806 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:12,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:12,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:20:12,899 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:12,900 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:12,900 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:12,900 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:12,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:12,901 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:12,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:12,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:12,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:12,901 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2020-11-28 03:20:12,901 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:12,901 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:12,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:12,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:13,080 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:13,080 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:13,094 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 [2020-11-28 03:20:13,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:13,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:13,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:13,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:13,100 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:13,100 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:13,105 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:13,154 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 [2020-11-28 03:20:13,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:13,156 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:13,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:13,157 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:20:13,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:13,160 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 03:20:13,160 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 [2020-11-28 03:20:13,165 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:13,169 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:20:13,169 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:13,173 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:13,173 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:13,173 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:13,173 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:13,216 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:13,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:13,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:13,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:13,260 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:13,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:13,276 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 [2020-11-28 03:20:13,276 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand 3 states. [2020-11-28 03:20:13,297 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-11-28 03:20:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:13,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:20:13,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:13,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:20:13,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:13,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:20:13,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:13,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2020-11-28 03:20:13,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:20:13,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2020-11-28 03:20:13,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 03:20:13,302 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:20:13,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2020-11-28 03:20:13,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:13,302 INFO L691 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2020-11-28 03:20:13,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2020-11-28 03:20:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2020-11-28 03:20:13,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-28 03:20:13,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2020-11-28 03:20:13,309 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-11-28 03:20:13,309 INFO L594 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-11-28 03:20:13,310 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:20:13,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2020-11-28 03:20:13,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:20:13,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:13,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:13,312 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2020-11-28 03:20:13,312 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:20:13,312 INFO L794 eck$LassoCheckResult]: Stem: 753#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 754#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 756#L13-1 assume !!(main_~i~0 > 10); 757#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2020-11-28 03:20:13,312 INFO L796 eck$LassoCheckResult]: Loop: 761#L13-1 assume !!(main_~i~0 > 10); 771#L10 assume !(25 == main_~i~0); 773#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2020-11-28 03:20:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2020-11-28 03:20:13,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:13,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816374685] [2020-11-28 03:20:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:13,326 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:13,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:13,335 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:13,337 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:13,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:13,338 INFO L82 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2020-11-28 03:20:13,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:13,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641269998] [2020-11-28 03:20:13,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:13,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:13,361 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:13,362 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:13,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:13,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2020-11-28 03:20:13,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:13,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690324816] [2020-11-28 03:20:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:13,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:13,392 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:13,393 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:13,435 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:13,435 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:13,435 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:13,435 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:13,435 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:13,435 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:13,435 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:13,435 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:13,435 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-11-28 03:20:13,436 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:13,436 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:13,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:13,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:13,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:13,593 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:13,593 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:13,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:13,597 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:13,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:13,631 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:20:13,683 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:13,685 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:13,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:13,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:13,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:13,686 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:13,686 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:13,686 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:13,686 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:13,686 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2020-11-28 03:20:13,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:13,686 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:13,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:13,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:13,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:13,868 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 18 [2020-11-28 03:20:13,892 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:13,892 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:13,896 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 [2020-11-28 03:20:13,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:13,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:13,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:13,899 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:20:13,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:13,902 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 03:20:13,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:13,906 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:13,908 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:20:13,908 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:13,911 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:13,911 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:13,911 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:13,911 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-28 03:20:13,934 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:13,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:13,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:13,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:13,987 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:13,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:14,009 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 [2020-11-28 03:20:14,009 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:20:14,032 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-11-28 03:20:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:14,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:14,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:20:14,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,034 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:14,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:14,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:20:14,092 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:20:14,110 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 35 states and 47 transitions. Complement of second has 5 states. [2020-11-28 03:20:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:14,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:20:14,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,112 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,152 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:14,166 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:20:14,166 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 Second operand 3 states. [2020-11-28 03:20:14,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 37 states and 52 transitions. Complement of second has 4 states. [2020-11-28 03:20:14,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:20:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-28 03:20:14,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:20:14,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2020-11-28 03:20:14,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2020-11-28 03:20:14,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2020-11-28 03:20:14,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-28 03:20:14,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2020-11-28 03:20:14,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:20:14,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 03:20:14,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2020-11-28 03:20:14,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:14,191 INFO L691 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-28 03:20:14,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2020-11-28 03:20:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2020-11-28 03:20:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:20:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-11-28 03:20:14,193 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-28 03:20:14,193 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-28 03:20:14,193 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 03:20:14,193 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-11-28 03:20:14,194 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:14,194 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:14,194 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:14,194 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:20:14,195 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-11-28 03:20:14,195 INFO L794 eck$LassoCheckResult]: Stem: 1006#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1007#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2020-11-28 03:20:14,195 INFO L796 eck$LassoCheckResult]: Loop: 1008#L13-1 assume !!(main_~i~0 > 10); 1005#L10 assume !(25 == main_~i~0); 1004#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1011#L13-1 assume !!(main_~i~0 > 10); 1015#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1014#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1008#L13-1 [2020-11-28 03:20:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,195 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2020-11-28 03:20:14,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:14,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355028206] [2020-11-28 03:20:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,202 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:14,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2020-11-28 03:20:14,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:14,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576749444] [2020-11-28 03:20:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,211 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:14,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2020-11-28 03:20:14,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:14,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342935520] [2020-11-28 03:20:14,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,217 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,221 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,223 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:14,265 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:14,265 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:14,265 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:14,266 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:14,266 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:14,266 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:14,266 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:14,266 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:14,266 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-11-28 03:20:14,266 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:14,266 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:14,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:14,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:14,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:14,345 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:14,345 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:14,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:14,350 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:14,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:14,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:20:14,394 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:14,416 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:14,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:14,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:14,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:14,416 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:14,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:14,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:14,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:14,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2020-11-28 03:20:14,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:14,417 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:14,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:14,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:14,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:14,480 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:14,480 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:14,500 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 [2020-11-28 03:20:14,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:14,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:14,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:14,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:14,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:14,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:14,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:14,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:14,512 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:14,512 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:14,515 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:14,515 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:14,515 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:14,515 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:14,552 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:14,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:14,632 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 [2020-11-28 03:20:14,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-11-28 03:20:14,674 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 7 states. [2020-11-28 03:20:14,674 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 [2020-11-28 03:20:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:20:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-28 03:20:14,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:20:14,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,675 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:14,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:14,796 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 [2020-11-28 03:20:14,796 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand 5 states. [2020-11-28 03:20:14,858 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 48 states and 64 transitions. Complement of second has 9 states. [2020-11-28 03:20:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:14,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:20:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-28 03:20:14,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:20:14,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:20:14,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-28 03:20:14,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:14,862 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2020-11-28 03:20:14,864 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:14,865 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2020-11-28 03:20:14,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:20:14,865 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 03:20:14,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2020-11-28 03:20:14,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:14,866 INFO L691 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-11-28 03:20:14,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2020-11-28 03:20:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-11-28 03:20:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 03:20:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2020-11-28 03:20:14,869 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-11-28 03:20:14,869 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2020-11-28 03:20:14,869 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-28 03:20:14,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2020-11-28 03:20:14,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-11-28 03:20:14,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:14,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:14,872 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2020-11-28 03:20:14,872 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2020-11-28 03:20:14,872 INFO L794 eck$LassoCheckResult]: Stem: 1226#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1227#L13-1 assume !!(main_~i~0 > 10); 1234#L10 assume !(25 == main_~i~0); 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1228#L13-1 assume !!(main_~i~0 > 10); 1230#L10 assume !(25 == main_~i~0); 1251#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1247#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2020-11-28 03:20:14,872 INFO L796 eck$LassoCheckResult]: Loop: 1237#L13-1 assume !!(main_~i~0 > 10); 1248#L10 assume !(25 == main_~i~0); 1246#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1238#L13-1 assume !!(main_~i~0 > 10); 1245#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1236#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 [2020-11-28 03:20:14,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,873 INFO L82 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2020-11-28 03:20:14,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:14,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555875291] [2020-11-28 03:20:14,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,887 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2020-11-28 03:20:14,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:14,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102883695] [2020-11-28 03:20:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,893 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:14,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:14,904 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:14,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:14,905 INFO L82 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2020-11-28 03:20:14,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:14,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091464200] [2020-11-28 03:20:14,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:14,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:20:14,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091464200] [2020-11-28 03:20:14,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986214159] [2020-11-28 03:20:14,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:20:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:14,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:20:14,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 03:20:15,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:20:15,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 03:20:15,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822719430] [2020-11-28 03:20:15,042 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:15,043 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:15,043 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:15,043 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:15,043 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:15,043 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:15,043 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:15,043 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:15,043 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-11-28 03:20:15,043 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:15,043 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:15,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:15,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:15,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:15,090 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:15,090 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:15,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:15,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:20:15,100 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:20:15,100 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_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:15,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:15,122 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:15,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:15,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:20:15,151 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:15,171 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:15,171 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:15,172 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:15,172 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:15,172 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:15,172 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:15,172 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:15,172 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:15,172 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2020-11-28 03:20:15,172 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:15,172 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:15,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:15,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:15,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:15,229 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:15,229 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:15,231 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 [2020-11-28 03:20:15,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:15,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:15,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:15,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:15,237 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:15,238 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:15,241 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:15,286 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 [2020-11-28 03:20:15,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:15,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:15,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:15,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:15,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:15,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:15,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:15,292 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:15,299 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:15,299 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:15,302 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:15,302 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:15,302 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:15,302 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:15,340 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:15,495 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 [2020-11-28 03:20:15,495 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-28 03:20:15,540 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 81 states and 107 transitions. Complement of second has 7 states. [2020-11-28 03:20:15,540 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 [2020-11-28 03:20:15,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:20:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-28 03:20:15,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-28 03:20:15,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:15,541 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:15,613 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 [2020-11-28 03:20:15,613 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-28 03:20:15,649 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 55 states and 74 transitions. Complement of second has 9 states. [2020-11-28 03:20:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:20:15,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2020-11-28 03:20:15,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-28 03:20:15,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:15,650 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:15,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:15,738 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 [2020-11-28 03:20:15,738 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-28 03:20:15,787 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 101 states and 141 transitions. Complement of second has 10 states. [2020-11-28 03:20:15,788 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 [2020-11-28 03:20:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:20:15,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-28 03:20:15,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-28 03:20:15,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:15,790 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:15,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:15,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:20:15,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:15,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:15,897 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-28 03:20:15,897 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand 5 states. [2020-11-28 03:20:15,943 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 76 states and 101 transitions. Complement of second has 11 states. [2020-11-28 03:20:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:15,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:20:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-28 03:20:15,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2020-11-28 03:20:15,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:15,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2020-11-28 03:20:15,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:15,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2020-11-28 03:20:15,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:15,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2020-11-28 03:20:15,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2020-11-28 03:20:15,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2020-11-28 03:20:15,950 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:20:15,950 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-28 03:20:15,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2020-11-28 03:20:15,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:15,950 INFO L691 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-11-28 03:20:15,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2020-11-28 03:20:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2020-11-28 03:20:15,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:20:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2020-11-28 03:20:15,954 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2020-11-28 03:20:15,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:20:15,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:20:15,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:20:15,955 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand 5 states. [2020-11-28 03:20:15,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:20:15,981 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-11-28 03:20:15,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:20:15,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2020-11-28 03:20:15,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-11-28 03:20:15,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2020-11-28 03:20:15,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-28 03:20:15,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2020-11-28 03:20:15,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2020-11-28 03:20:15,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:15,985 INFO L691 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-11-28 03:20:15,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2020-11-28 03:20:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-11-28 03:20:15,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:20:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-11-28 03:20:15,987 INFO L714 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-28 03:20:15,987 INFO L594 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-11-28 03:20:15,987 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-28 03:20:15,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2020-11-28 03:20:15,988 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-28 03:20:15,988 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:15,988 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:15,989 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:20:15,989 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2020-11-28 03:20:15,989 INFO L794 eck$LassoCheckResult]: Stem: 1992#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1993#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2020-11-28 03:20:15,989 INFO L796 eck$LassoCheckResult]: Loop: 1994#L13-1 assume !!(main_~i~0 > 10); 1988#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1989#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1996#L13-1 assume !!(main_~i~0 > 10); 1990#L10 assume !(25 == main_~i~0); 1991#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1997#L13-1 assume !!(main_~i~0 > 10); 2014#L10 assume !(25 == main_~i~0); 2013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1994#L13-1 [2020-11-28 03:20:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2020-11-28 03:20:15,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:15,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453849374] [2020-11-28 03:20:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:15,994 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:15,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:15,997 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:15,997 INFO L82 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2020-11-28 03:20:15,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:15,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328282599] [2020-11-28 03:20:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:16,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:16,005 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:16,006 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2020-11-28 03:20:16,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:16,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114476402] [2020-11-28 03:20:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:16,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:16,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:16,019 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:16,065 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:16,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:16,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:16,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:16,066 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:16,066 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:16,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:16,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:16,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-11-28 03:20:16,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:16,066 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:16,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:16,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:16,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:16,114 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:16,115 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:16,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:16,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:20:16,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:20:16,122 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_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:16,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:16,148 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:16,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:16,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:20:16,178 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:16,202 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:16,202 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:16,202 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:16,202 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:16,202 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:16,202 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:16,202 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:16,202 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:16,202 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2020-11-28 03:20:16,203 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:16,203 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:16,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:16,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:16,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:16,254 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:16,255 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:16,257 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 [2020-11-28 03:20:16,258 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:16,259 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:16,259 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:16,259 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:16,261 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:16,262 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:16,265 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:16,292 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 [2020-11-28 03:20:16,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:16,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:16,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:16,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:16,295 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:20:16,295 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:20:16,298 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:16,323 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 [2020-11-28 03:20:16,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:16,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:16,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:16,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:16,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:16,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:16,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:16,328 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:16,336 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:16,336 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:16,344 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:16,344 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:16,344 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:16,344 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:16,383 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:16,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:16,483 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 [2020-11-28 03:20:16,483 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-28 03:20:16,493 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 47 transitions. Complement of second has 5 states. [2020-11-28 03:20:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:20:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:16,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-28 03:20:16,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:16,494 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:16,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:16,582 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 [2020-11-28 03:20:16,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-28 03:20:16,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 40 states and 49 transitions. Complement of second has 7 states. [2020-11-28 03:20:16,641 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 [2020-11-28 03:20:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:20:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-28 03:20:16,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-28 03:20:16,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:16,642 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:16,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:16,778 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 [2020-11-28 03:20:16,778 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-28 03:20:16,790 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 39 states and 49 transitions. Complement of second has 5 states. [2020-11-28 03:20:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:20:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-28 03:20:16,791 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-28 03:20:16,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:16,792 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:16,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:16,907 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 03:20:16,908 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-28 03:20:16,934 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand 6 states. Result 41 states and 51 transitions. Complement of second has 6 states. [2020-11-28 03:20:16,935 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 [2020-11-28 03:20:16,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:20:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:20:16,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-28 03:20:16,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:16,936 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:16,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:16,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:16,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:20:16,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:17,018 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2020-11-28 03:20:17,019 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. [2020-11-28 03:20:17,133 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand 6 states. Result 210 states and 292 transitions. Complement of second has 48 states 9 powerset states39 rank states. The highest rank that occured is 5 [2020-11-28 03:20:17,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-28 03:20:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2020-11-28 03:20:17,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2020-11-28 03:20:17,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:17,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2020-11-28 03:20:17,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:17,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2020-11-28 03:20:17,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:17,138 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2020-11-28 03:20:17,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2020-11-28 03:20:17,144 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2020-11-28 03:20:17,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-28 03:20:17,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:20:17,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2020-11-28 03:20:17,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:17,145 INFO L691 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2020-11-28 03:20:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2020-11-28 03:20:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2020-11-28 03:20:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-28 03:20:17,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2020-11-28 03:20:17,151 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-11-28 03:20:17,151 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2020-11-28 03:20:17,151 INFO L427 BuchiCegarLoop]: ======== Iteration 10============ [2020-11-28 03:20:17,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2020-11-28 03:20:17,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-11-28 03:20:17,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:17,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:17,157 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:20:17,157 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2020-11-28 03:20:17,157 INFO L794 eck$LassoCheckResult]: Stem: 2689#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2691#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2020-11-28 03:20:17,157 INFO L796 eck$LassoCheckResult]: Loop: 2692#L13-1 assume !!(main_~i~0 > 10); 2693#L10 assume 25 == main_~i~0;main_~i~0 := 30; 2741#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2739#L13-1 assume !!(main_~i~0 > 10); 2734#L10 assume !(25 == main_~i~0); 2732#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2727#L13-1 assume !!(main_~i~0 > 10); 2714#L10 assume !(25 == main_~i~0); 2726#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2725#L13-1 assume !!(main_~i~0 > 10); 2698#L10 assume !(25 == main_~i~0); 2696#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2692#L13-1 [2020-11-28 03:20:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2020-11-28 03:20:17,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:17,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507771101] [2020-11-28 03:20:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:17,165 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:17,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:17,175 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:17,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:17,175 INFO L82 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2020-11-28 03:20:17,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:17,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140303149] [2020-11-28 03:20:17,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:17,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:17,186 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:17,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:17,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:17,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2020-11-28 03:20:17,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:17,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678740089] [2020-11-28 03:20:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:17,194 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:17,200 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:17,201 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:17,260 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:17,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:17,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:17,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:17,260 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:20:17,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:17,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:17,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:17,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-11-28 03:20:17,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:17,260 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:17,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:17,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:17,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:17,356 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:17,356 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:17,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:20:17,368 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) [2020-11-28 03:20:17,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:20:17,417 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:17,422 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:20:17,449 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:20:17,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:20:17,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:20:17,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:20:17,449 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:20:17,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:17,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:20:17,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:20:17,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2020-11-28 03:20:17,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:20:17,450 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:20:17,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:17,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:17,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:20:17,505 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:20:17,505 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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 [2020-11-28 03:20:17,508 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 [2020-11-28 03:20:17,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:20:17,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:20:17,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:20:17,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:20:17,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:20:17,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:20:17,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:20:17,514 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:20:17,516 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:20:17,517 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/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) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:20:17,522 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:20:17,522 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:20:17,522 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:20:17,523 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2020-11-28 03:20:17,547 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:20:17,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:17,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:17,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:17,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:17,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:17,706 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:20:17,706 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-28 03:20:17,734 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 101 states and 129 transitions. Complement of second has 5 states. [2020-11-28 03:20:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:20:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:20:17,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-28 03:20:17,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:17,737 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:17,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:17,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:17,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:17,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:17,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:17,867 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:20:17,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-28 03:20:17,918 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 106 states and 135 transitions. Complement of second has 7 states. [2020-11-28 03:20:17,918 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 [2020-11-28 03:20:17,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:20:17,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2020-11-28 03:20:17,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-28 03:20:17,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:17,919 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:17,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:17,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:17,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:17,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:18,030 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 5 loop predicates [2020-11-28 03:20:18,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-28 03:20:18,063 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 95 states and 126 transitions. Complement of second has 5 states. [2020-11-28 03:20:18,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:20:18,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2020-11-28 03:20:18,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-28 03:20:18,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:18,065 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:18,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:18,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:18,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:18,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:18,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:18,189 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:20:18,189 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-28 03:20:18,223 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand 7 states. Result 99 states and 128 transitions. Complement of second has 6 states. [2020-11-28 03:20:18,223 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 [2020-11-28 03:20:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:20:18,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:20:18,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-28 03:20:18,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:18,224 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:20:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:18,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:20:18,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:20:18,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:20:18,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:20:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:20:18,331 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2020-11-28 03:20:18,331 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. [2020-11-28 03:20:18,544 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand 7 states. Result 1058 states and 1452 transitions. Complement of second has 131 states 20 powerset states111 rank states. The highest rank that occured is 5 [2020-11-28 03:20:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2020-11-28 03:20:18,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:20:18,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2020-11-28 03:20:18,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2020-11-28 03:20:18,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:18,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2020-11-28 03:20:18,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:18,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2020-11-28 03:20:18,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:20:18,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2020-11-28 03:20:18,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2020-11-28 03:20:18,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2020-11-28 03:20:18,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-28 03:20:18,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:20:18,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2020-11-28 03:20:18,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:20:18,569 INFO L691 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2020-11-28 03:20:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2020-11-28 03:20:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2020-11-28 03:20:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-28 03:20:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2020-11-28 03:20:18,585 INFO L714 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-11-28 03:20:18,585 INFO L594 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2020-11-28 03:20:18,586 INFO L427 BuchiCegarLoop]: ======== Iteration 11============ [2020-11-28 03:20:18,586 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2020-11-28 03:20:18,587 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2020-11-28 03:20:18,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:20:18,591 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:20:18,592 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:20:18,592 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2020-11-28 03:20:18,592 INFO L794 eck$LassoCheckResult]: Stem: 4641#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4645#L13-1 assume !!(main_~i~0 > 10); 4657#L10 assume !(25 == main_~i~0); 4655#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2020-11-28 03:20:18,592 INFO L796 eck$LassoCheckResult]: Loop: 4646#L13-1 assume !!(main_~i~0 > 10); 4647#L10 assume 25 == main_~i~0;main_~i~0 := 30; 4761#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4759#L13-1 assume !!(main_~i~0 > 10); 4757#L10 assume !(25 == main_~i~0); 4755#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4751#L13-1 assume !!(main_~i~0 > 10); 4748#L10 assume !(25 == main_~i~0); 4746#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4741#L13-1 assume !!(main_~i~0 > 10); 4660#L10 assume !(25 == main_~i~0); 4689#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4687#L13-1 assume !!(main_~i~0 > 10); 4652#L10 assume !(25 == main_~i~0); 4650#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4646#L13-1 [2020-11-28 03:20:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:18,593 INFO L82 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2020-11-28 03:20:18,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:18,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332914979] [2020-11-28 03:20:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:18,602 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:18,607 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:18,609 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:18,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:18,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2020-11-28 03:20:18,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:18,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204944629] [2020-11-28 03:20:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:18,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:18,637 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:18,638 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:18,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:20:18,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2020-11-28 03:20:18,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:20:18,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192110515] [2020-11-28 03:20:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:20:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:18,658 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:20:18,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:20:18,686 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:20:18,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:20:18 BoogieIcfgContainer [2020-11-28 03:20:18,824 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:20:18,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:20:18,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:20:18,825 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:20:18,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:20:07" (3/4) ... [2020-11-28 03:20:18,828 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 03:20:18,871 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_89356119-58f1-455b-bb09-ca063ed0cf6b/bin/uautomizer/witness.graphml [2020-11-28 03:20:18,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:20:18,872 INFO L168 Benchmark]: Toolchain (without parser) took 12486.02 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 71.5 MB in the beginning and 116.6 MB in the end (delta: -45.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:18,873 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 77.1 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:18,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.95 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 84.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:18,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.38 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:18,874 INFO L168 Benchmark]: Boogie Preprocessor took 28.35 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:20:18,875 INFO L168 Benchmark]: RCFGBuilder took 336.86 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 73.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:18,875 INFO L168 Benchmark]: BuchiAutomizer took 11709.02 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 73.2 MB in the beginning and 118.6 MB in the end (delta: -45.4 MB). Peak memory consumption was 84.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:18,876 INFO L168 Benchmark]: Witness Printer took 46.90 ms. Allocated memory is still 157.3 MB. Free memory was 118.6 MB in the beginning and 116.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:20:18,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 77.1 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.95 ms. Allocated memory is still 107.0 MB. Free memory was 71.2 MB in the beginning and 84.1 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.38 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 82.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.35 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 336.86 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 73.7 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 11709.02 ms. Allocated memory was 107.0 MB in the beginning and 157.3 MB in the end (delta: 50.3 MB). Free memory was 73.2 MB in the beginning and 118.6 MB in the end (delta: -45.4 MB). Peak memory consumption was 84.6 MB. Max. memory is 16.1 GB. * Witness Printer took 46.90 ms. Allocated memory is still 157.3 MB. Free memory was 118.6 MB in the beginning and 116.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. 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 12 terminating modules (2 trivial, 5 deterministic, 5 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + 27 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 27 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 26 and consists of 6 locations. One nondeterministic module has affine ranking function -2 * i + 51 and consists of 8 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 126 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.6s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 7.1s. Construction of modules took 0.7s. Büchi inclusion checks took 3.4s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 200 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 126 states and ocurred in iteration 10. Nontrivial modules had stage [2, 3, 2, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/33 HoareTripleCheckerStatistics: 173 SDtfs, 246 SDslu, 6 SDs, 0 SdLazy, 346 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax210 hnf92 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf113 smp97 tf112 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@443b0fd8=0, \result=0, i=25} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 Loop: [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...