./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/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 32bit --witnessprinter.graph.data.programhash 7f63971ff7e1e47adf4fc8a9c16196a6401c3822 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:46:18,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:46:18,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:46:18,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:46:18,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:46:18,665 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:46:18,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:46:18,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:46:18,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:46:18,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:46:18,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:46:18,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:46:18,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:46:18,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:46:18,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:46:18,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:46:18,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:46:18,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:46:18,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:46:18,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:46:18,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:46:18,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:46:18,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:46:18,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:46:18,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:46:18,725 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:46:18,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:46:18,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:46:18,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:46:18,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:46:18,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:46:18,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:46:18,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:46:18,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:46:18,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:46:18,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:46:18,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:46:18,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:46:18,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:46:18,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:46:18,751 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:46:18,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:46:18,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:46:18,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:46:18,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:46:18,808 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:46:18,808 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:46:18,808 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:46:18,809 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:46:18,809 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:46:18,809 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:46:18,809 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:46:18,811 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:46:18,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:46:18,811 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:46:18,812 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:46:18,812 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:46:18,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:46:18,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:46:18,813 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:46:18,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:46:18,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:46:18,813 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:46:18,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:46:18,814 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:46:18,814 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:46:18,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:46:18,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:46:18,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:46:18,815 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:46:18,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:46:18,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:46:18,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:46:18,818 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:46:18,821 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:46:18,821 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_08743996-acb7-4d75-b917-dc73984ccaad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f63971ff7e1e47adf4fc8a9c16196a6401c3822 [2020-11-30 00:46:19,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:46:19,242 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:46:19,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:46:19,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:46:19,248 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:46:19,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/../../sv-benchmarks/c/loop-new/nested-1.i [2020-11-30 00:46:19,373 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/data/adf160e6c/c4fca3071af6412a81b395915fa7e336/FLAG4b793bf5f [2020-11-30 00:46:19,880 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:46:19,881 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/sv-benchmarks/c/loop-new/nested-1.i [2020-11-30 00:46:19,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/data/adf160e6c/c4fca3071af6412a81b395915fa7e336/FLAG4b793bf5f [2020-11-30 00:46:20,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/data/adf160e6c/c4fca3071af6412a81b395915fa7e336 [2020-11-30 00:46:20,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:46:20,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:46:20,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:20,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:46:20,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:46:20,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f548b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20, skipping insertion in model container [2020-11-30 00:46:20,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:46:20,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:46:20,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:20,533 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:46:20,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:46:20,574 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:46:20,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20 WrapperNode [2020-11-30 00:46:20,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:46:20,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:20,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:46:20,577 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:46:20,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:46:20,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:46:20,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:46:20,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:46:20,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... [2020-11-30 00:46:20,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:46:20,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:46:20,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:46:20,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:46:20,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:46:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:46:20,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:46:20,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:46:21,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:46:21,041 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 00:46:21,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:21 BoogieIcfgContainer [2020-11-30 00:46:21,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:46:21,051 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:46:21,051 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:46:21,056 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:46:21,057 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:21,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:46:20" (1/3) ... [2020-11-30 00:46:21,060 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16b2018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:46:21, skipping insertion in model container [2020-11-30 00:46:21,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:21,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:46:20" (2/3) ... [2020-11-30 00:46:21,074 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16b2018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:46:21, skipping insertion in model container [2020-11-30 00:46:21,075 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:46:21,075 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:21" (3/3) ... [2020-11-30 00:46:21,078 INFO L373 chiAutomizerObserver]: Analyzing ICFG nested-1.i [2020-11-30 00:46:21,175 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:46:21,175 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:46:21,175 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:46:21,175 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:46:21,176 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:46:21,176 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:46:21,176 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:46:21,176 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:46:21,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 00:46:21,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:46:21,248 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:21,248 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:21,256 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:46:21,256 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:46:21,257 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:46:21,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2020-11-30 00:46:21,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:46:21,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:21,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:21,261 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:46:21,261 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:46:21,271 INFO L794 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 14#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 8#L29true assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 12#L30true assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 6#L31-3true [2020-11-30 00:46:21,271 INFO L796 eck$LassoCheckResult]: Loop: 6#L31-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 9#L32-3true assume !true; 10#L31-2true main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 6#L31-3true [2020-11-30 00:46:21,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:21,280 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-11-30 00:46:21,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:21,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687765360] [2020-11-30 00:46:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:21,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:21,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:21,540 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:21,548 INFO L82 PathProgramCache]: Analyzing trace with hash 50037, now seen corresponding path program 1 times [2020-11-30 00:46:21,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:21,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353336654] [2020-11-30 00:46:21,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:21,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353336654] [2020-11-30 00:46:21,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:46:21,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:46:21,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15109459] [2020-11-30 00:46:21,612 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-30 00:46:21,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:46:21,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:46:21,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:46:21,643 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2020-11-30 00:46:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:46:21,655 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-11-30 00:46:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:46:21,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2020-11-30 00:46:21,664 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:46:21,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 8 states and 9 transitions. [2020-11-30 00:46:21,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-30 00:46:21,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-30 00:46:21,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2020-11-30 00:46:21,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:46:21,673 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-30 00:46:21,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2020-11-30 00:46:21,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-30 00:46:21,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-30 00:46:21,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2020-11-30 00:46:21,700 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-30 00:46:21,701 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-30 00:46:21,701 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-30 00:46:21,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2020-11-30 00:46:21,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-30 00:46:21,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:21,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:21,703 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-30 00:46:21,703 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-30 00:46:21,703 INFO L794 eck$LassoCheckResult]: Stem: 43#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 41#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 42#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 48#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 44#L31-3 [2020-11-30 00:46:21,703 INFO L796 eck$LassoCheckResult]: Loop: 44#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 45#L32-3 assume !(main_~j~0 < main_~m~0); 46#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 44#L31-3 [2020-11-30 00:46:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:21,704 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 2 times [2020-11-30 00:46:21,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:21,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038031500] [2020-11-30 00:46:21,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:21,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:21,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:21,745 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:21,746 INFO L82 PathProgramCache]: Analyzing trace with hash 49851, now seen corresponding path program 1 times [2020-11-30 00:46:21,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:21,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695946422] [2020-11-30 00:46:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:21,758 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:21,764 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:21,767 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:21,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910836, now seen corresponding path program 1 times [2020-11-30 00:46:21,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:21,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215626949] [2020-11-30 00:46:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:21,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215626949] [2020-11-30 00:46:21,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:46:21,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:46:21,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214135645] [2020-11-30 00:46:21,963 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:21,964 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:21,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:21,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:21,964 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:21,965 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:21,965 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:21,965 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:21,965 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2020-11-30 00:46:21,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:21,966 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:21,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:22,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:22,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:22,098 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:22,099 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:46:22,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:22,107 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:22,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-30 00:46:22,121 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Honda state: {ULTIMATE.start_main_~j~0=0, ULTIMATE.start_main_~m~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:22,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:22,192 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:22,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:22,231 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:22,426 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:22,428 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:22,429 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:22,429 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:22,429 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:22,429 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:22,429 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:22,429 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:22,430 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:22,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration2_Loop [2020-11-30 00:46:22,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:22,430 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:22,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:22,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:22,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:22,599 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:22,606 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:46:22,615 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:46:22,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:22,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:22,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:22,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:22,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:22,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:22,627 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:22,635 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:22,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:46:22,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:22,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:22,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:22,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:22,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:22,683 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:22,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-30 00:46:22,686 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:22,702 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-30 00:46:22,702 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/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) [2020-11-30 00:46:22,712 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:22,713 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:22,713 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:22,714 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:22,751 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:22,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:22,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:22,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:22,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:22,856 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:22,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:22,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:22,887 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:22,888 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 3 states. [2020-11-30 00:46:22,931 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 4 states. [2020-11-30 00:46:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-30 00:46:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:22,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-30 00:46:22,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-30 00:46:22,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:22,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-30 00:46:22,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:22,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-30 00:46:22,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:22,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2020-11-30 00:46:22,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:46:22,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 15 transitions. [2020-11-30 00:46:22,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:46:22,941 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-30 00:46:22,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2020-11-30 00:46:22,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:22,941 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 00:46:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2020-11-30 00:46:22,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-30 00:46:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-30 00:46:22,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2020-11-30 00:46:22,944 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2020-11-30 00:46:22,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:46:22,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:46:22,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:46:22,953 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand 4 states. [2020-11-30 00:46:22,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:46:22,984 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2020-11-30 00:46:22,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:46:22,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2020-11-30 00:46:22,989 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:46:22,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2020-11-30 00:46:22,990 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2020-11-30 00:46:22,990 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-30 00:46:22,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2020-11-30 00:46:22,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:22,991 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2020-11-30 00:46:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2020-11-30 00:46:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-11-30 00:46:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:46:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2020-11-30 00:46:22,994 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 00:46:22,994 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2020-11-30 00:46:22,994 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-30 00:46:22,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2020-11-30 00:46:22,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:46:22,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:22,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:23,000 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-30 00:46:23,001 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:46:23,001 INFO L794 eck$LassoCheckResult]: Stem: 133#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 131#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 132#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 139#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 134#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 135#L32-3 [2020-11-30 00:46:23,002 INFO L796 eck$LassoCheckResult]: Loop: 135#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 140#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 135#L32-3 [2020-11-30 00:46:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:23,003 INFO L82 PathProgramCache]: Analyzing trace with hash 28695852, now seen corresponding path program 1 times [2020-11-30 00:46:23,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:23,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090311104] [2020-11-30 00:46:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:23,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:23,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:23,078 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:23,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:23,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 1 times [2020-11-30 00:46:23,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:23,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051113494] [2020-11-30 00:46:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:23,095 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:23,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:23,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:23,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:23,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1806910894, now seen corresponding path program 1 times [2020-11-30 00:46:23,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:23,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065034488] [2020-11-30 00:46:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:23,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:23,184 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:23,189 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:23,225 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:23,225 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:23,225 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:23,225 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:23,225 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:23,226 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:23,226 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:23,226 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:23,226 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2020-11-30 00:46:23,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:23,226 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:23,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,321 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:23,321 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/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) [2020-11-30 00:46:23,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:23,344 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:23,399 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:23,399 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-30 00:46:23,665 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:23,668 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:23,668 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:23,668 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:23,668 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:23,668 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:23,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:23,669 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:23,669 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:23,669 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration3_Loop [2020-11-30 00:46:23,669 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:23,669 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:23,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:23,782 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:23,782 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:46:23,791 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:46:23,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:23,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:23,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:23,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:23,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:23,799 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:23,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:23,804 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:23,809 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:46:23,809 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:23,816 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:23,817 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:23,817 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:23,817 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2020-11-30 00:46:23,851 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:23,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:23,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:23,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:23,911 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:23,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:23,932 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:23,932 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-30 00:46:24,127 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 24 states and 31 transitions. Complement of second has 7 states. [2020-11-30 00:46:24,130 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 [2020-11-30 00:46:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-30 00:46:24,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-30 00:46:24,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:24,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2020-11-30 00:46:24,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:24,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2020-11-30 00:46:24,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:24,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2020-11-30 00:46:24,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:46:24,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 17 states and 21 transitions. [2020-11-30 00:46:24,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-30 00:46:24,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-30 00:46:24,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2020-11-30 00:46:24,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-30 00:46:24,141 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-11-30 00:46:24,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2020-11-30 00:46:24,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-11-30 00:46:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 00:46:24,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-30 00:46:24,144 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 00:46:24,144 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 00:46:24,144 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-30 00:46:24,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 14 transitions. [2020-11-30 00:46:24,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:46:24,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:46:24,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:46:24,146 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:46:24,146 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:46:24,146 INFO L794 eck$LassoCheckResult]: Stem: 214#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 212#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~post7, main_#t~post6, main_#t~post5, main_~n~0, main_~m~0, main_~k~0, main_~i~0, main_~j~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~k~0 := 0;havoc main_~i~0;havoc main_~j~0; 213#L29 assume !!(10 <= main_~n~0 && main_~n~0 <= 10000); 222#L30 assume !!(10 <= main_~m~0 && main_~m~0 <= 10000);main_~i~0 := 0; 215#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 216#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 220#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 223#L32-3 assume !(main_~j~0 < main_~m~0); 221#L31-2 main_#t~post5 := main_~i~0;main_~i~0 := 1 + main_#t~post5;havoc main_#t~post5; 217#L31-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 218#L32-3 [2020-11-30 00:46:24,146 INFO L796 eck$LassoCheckResult]: Loop: 218#L32-3 assume !!(main_~j~0 < main_~m~0);main_#t~post7 := main_~k~0;main_~k~0 := 1 + main_#t~post7;havoc main_#t~post7; 219#L32-2 main_#t~post6 := main_~j~0;main_~j~0 := 1 + main_#t~post6;havoc main_#t~post6; 218#L32-3 [2020-11-30 00:46:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:24,147 INFO L82 PathProgramCache]: Analyzing trace with hash 857348446, now seen corresponding path program 1 times [2020-11-30 00:46:24,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:24,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598225098] [2020-11-30 00:46:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:24,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598225098] [2020-11-30 00:46:24,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031082356] [2020-11-30 00:46:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:46:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:24,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:24,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:24,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:46:24,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-30 00:46:24,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438186551] [2020-11-30 00:46:24,372 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-30 00:46:24,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:24,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1859, now seen corresponding path program 2 times [2020-11-30 00:46:24,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:46:24,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647120393] [2020-11-30 00:46:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:46:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:24,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:46:24,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:46:24,398 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:46:24,430 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:24,430 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:24,430 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:24,431 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:24,431 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-30 00:46:24,431 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:24,431 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:24,431 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:24,431 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2020-11-30 00:46:24,431 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:24,431 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:24,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,528 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:24,528 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:46:24,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-30 00:46:24,539 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:46:24,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-30 00:46:24,603 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:24,797 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-30 00:46:24,800 INFO L210 LassoAnalysis]: Preferences: [2020-11-30 00:46:24,801 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-30 00:46:24,801 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-30 00:46:24,801 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-30 00:46:24,801 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-30 00:46:24,801 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:24,801 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-30 00:46:24,802 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-30 00:46:24,802 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested-1.i_Iteration4_Loop [2020-11-30 00:46:24,802 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-30 00:46:24,802 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-30 00:46:24,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-30 00:46:24,891 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-30 00:46:24,891 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:46:24,903 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-30 00:46:24,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-30 00:46:24,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-30 00:46:24,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-30 00:46:24,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-30 00:46:24,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-30 00:46:24,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-30 00:46:24,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:24,912 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-30 00:46:24,920 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-30 00:46:24,921 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08743996-acb7-4d75-b917-dc73984ccaad/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-30 00:46:24,932 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-30 00:46:24,933 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-30 00:46:24,933 INFO L510 LassoAnalysis]: Proved termination. [2020-11-30 00:46:24,933 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-30 00:46:24,975 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-30 00:46:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:25,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:25,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:25,038 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:25,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:25,057 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:25,057 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-30 00:46:25,101 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 7 states. [2020-11-30 00:46:25,102 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 [2020-11-30 00:46:25,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-30 00:46:25,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-30 00:46:25,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:25,104 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:46:25,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:25,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:25,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:25,167 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:25,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:25,186 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:25,186 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-30 00:46:25,210 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 7 states. [2020-11-30 00:46:25,211 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 [2020-11-30 00:46:25,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-30 00:46:25,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-30 00:46:25,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:25,213 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-30 00:46:25,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:46:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:25,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:46:25,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:46:25,273 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:46:25,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:46:25,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:46:25,290 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-30 00:46:25,291 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-30 00:46:25,316 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 14 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 17 states and 21 transitions. Complement of second has 6 states. [2020-11-30 00:46:25,318 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 [2020-11-30 00:46:25,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-30 00:46:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-30 00:46:25,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-30 00:46:25,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:25,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 2 letters. [2020-11-30 00:46:25,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:25,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2020-11-30 00:46:25,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-30 00:46:25,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2020-11-30 00:46:25,322 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:46:25,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-11-30 00:46:25,323 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:46:25,323 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:46:25,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:46:25,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:46:25,323 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:25,323 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:25,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:46:25,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:46:25,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:46:25,325 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2020-11-30 00:46:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:46:25,325 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-30 00:46:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:46:25,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-30 00:46:25,325 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:46:25,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:46:25,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-30 00:46:25,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-30 00:46:25,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-30 00:46:25,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-30 00:46:25,326 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:25,336 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:25,336 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:46:25,337 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-30 00:46:25,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:46:25,337 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-30 00:46:25,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-30 00:46:25,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:46:25 BoogieIcfgContainer [2020-11-30 00:46:25,344 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:46:25,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:46:25,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:46:25,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:46:25,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:46:21" (3/4) ... [2020-11-30 00:46:25,352 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:46:25,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:46:25,361 INFO L168 Benchmark]: Toolchain (without parser) took 5088.73 ms. Allocated memory was 117.4 MB in the beginning and 153.1 MB in the end (delta: 35.7 MB). Free memory was 83.0 MB in the beginning and 56.8 MB in the end (delta: 26.2 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:25,362 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory is still 33.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:25,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.34 ms. Allocated memory is still 117.4 MB. Free memory was 82.8 MB in the beginning and 92.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:25,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.57 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:25,365 INFO L168 Benchmark]: Boogie Preprocessor took 25.71 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 89.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:25,366 INFO L168 Benchmark]: RCFGBuilder took 402.53 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 77.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:25,370 INFO L168 Benchmark]: BuchiAutomizer took 4293.43 ms. Allocated memory was 117.4 MB in the beginning and 153.1 MB in the end (delta: 35.7 MB). Free memory was 77.7 MB in the beginning and 56.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:46:25,370 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 153.1 MB. Free memory is still 56.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:46:25,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory is still 33.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.34 ms. Allocated memory is still 117.4 MB. Free memory was 82.8 MB in the beginning and 92.3 MB in the end (delta: -9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.57 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 90.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.71 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 89.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 402.53 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 77.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4293.43 ms. Allocated memory was 117.4 MB in the beginning and 153.1 MB in the end (delta: 35.7 MB). Free memory was 77.7 MB in the beginning and 56.8 MB in the end (delta: 20.9 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 153.1 MB. Free memory is still 56.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (3 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 3 locations. One deterministic module has affine ranking function m + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function m + -1 * j and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 64 SDtfs, 50 SDslu, 13 SDs, 0 SdLazy, 40 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf98 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...