./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e09e2fe0d9f978fd259d1d805e514754ab2def67 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:40,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:40,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:40,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:40,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:40,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:40,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:40,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:40,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:40,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:40,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:40,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:40,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:40,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:40,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:40,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:40,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:40,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:40,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:40,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:40,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:40,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:40,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:40,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:40,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:40,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:40,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:40,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:40,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:40,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:40,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:40,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:40,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:40,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:40,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:40,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:40,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:40,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:40,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:40,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:40,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:40,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:13:40,682 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:40,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:40,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:40,686 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:40,686 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:40,686 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:13:40,687 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:13:40,687 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:13:40,688 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:13:40,688 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:13:40,689 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:13:40,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:40,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:13:40,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:40,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:40,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:13:40,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:13:40,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:13:40,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:40,693 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:13:40,693 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:40,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:13:40,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:40,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:40,695 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:13:40,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:40,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:40,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:40,696 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:13:40,699 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:13:40,700 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_305af750-25a0-4eef-8c54-dba5d4eff81f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2020-11-28 03:13:41,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:41,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:41,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:41,037 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:41,042 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:41,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2020-11-28 03:13:41,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/data/925086453/bd8e154a8f4f4757bd00e47b6bd5e05e/FLAG2d57c9de2 [2020-11-28 03:13:41,682 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:41,683 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2020-11-28 03:13:41,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/data/925086453/bd8e154a8f4f4757bd00e47b6bd5e05e/FLAG2d57c9de2 [2020-11-28 03:13:42,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/data/925086453/bd8e154a8f4f4757bd00e47b6bd5e05e [2020-11-28 03:13:42,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:42,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:42,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:42,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:42,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:42,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ba987d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42, skipping insertion in model container [2020-11-28 03:13:42,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:42,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:42,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:42,383 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:42,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:42,439 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:42,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42 WrapperNode [2020-11-28 03:13:42,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:42,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:42,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:42,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:42,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:42,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:42,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:42,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:42,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... [2020-11-28 03:13:42,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:42,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:42,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:42,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:42,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:42,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:42,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:42,776 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:42,776 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:13:42,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:42 BoogieIcfgContainer [2020-11-28 03:13:42,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:42,780 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:13:42,780 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:13:42,784 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:13:42,785 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:42,786 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:13:42" (1/3) ... [2020-11-28 03:13:42,787 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@404333b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:13:42, skipping insertion in model container [2020-11-28 03:13:42,787 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:42,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:42" (2/3) ... [2020-11-28 03:13:42,788 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@404333b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:13:42, skipping insertion in model container [2020-11-28 03:13:42,788 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:42,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:42" (3/3) ... [2020-11-28 03:13:42,790 INFO L373 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2020-11-28 03:13:42,850 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:13:42,850 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:13:42,850 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:13:42,850 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:42,850 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:42,851 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:13:42,851 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:42,851 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:13:42,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:13:42,887 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:42,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:42,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:42,895 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:13:42,895 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:42,895 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:13:42,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:13:42,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:42,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:42,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:42,897 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:13:42,898 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:42,906 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2020-11-28 03:13:42,907 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 7#L18true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L18-2true [2020-11-28 03:13:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:13:42,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:42,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804300374] [2020-11-28 03:13:42,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:43,023 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:43,029 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:43,048 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:43,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-28 03:13:43,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:43,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916661875] [2020-11-28 03:13:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:43,065 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:43,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:43,073 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:43,076 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-28 03:13:43,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:43,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425933854] [2020-11-28 03:13:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:43,091 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:43,108 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:43,111 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:43,282 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-28 03:13:43,382 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:43,383 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:43,383 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:43,383 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:43,383 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:13:43,384 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:43,384 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:43,384 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:43,384 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2020-11-28 03:13:43,384 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:43,385 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:43,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,602 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:43,603 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:43,620 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:43,620 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:43,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:43,634 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:43,687 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:43,688 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:43,695 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:43,695 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:43,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:43,746 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:43,757 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:43,757 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:43,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:43,809 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/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 [2020-11-28 03:13:43,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:13:43,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:13:43,905 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:13:43,907 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:43,907 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:43,908 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:43,908 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:43,908 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:13:43,908 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:43,908 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:43,908 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:43,908 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2020-11-28 03:13:43,909 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:43,909 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:43,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:43,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:44,114 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:44,121 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:44,134 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:44,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:44,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:44,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:44,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:44,155 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:44,158 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:44,170 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:44,225 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:44,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:44,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:44,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:44,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:44,234 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:44,236 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:44,245 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/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 [2020-11-28 03:13:44,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:44,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:44,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:44,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:44,294 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:13:44,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:44,295 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 03:13:44,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:44,299 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:44,339 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:44,340 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:44,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:44,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:44,341 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:44,341 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:44,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:44,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:44,352 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:13:44,360 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:13:44,360 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:44,370 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:13:44,371 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:13:44,371 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:13:44,372 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:44,409 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:13:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:44,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:44,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:44,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:13:44,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:44,607 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:13:44,609 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-28 03:13:44,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 7 states. [2020-11-28 03:13:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:13:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:44,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2020-11-28 03:13:44,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 03:13:44,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:44,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:13:44,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:44,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-28 03:13:44,680 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:44,681 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-28 03:13:44,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:44,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2020-11-28 03:13:44,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:13:44,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 03:13:44,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-28 03:13:44,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:13:44,693 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-28 03:13:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-28 03:13:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-28 03:13:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:13:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-28 03:13:44,725 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:13:44,726 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:13:44,727 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:13:44,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-28 03:13:44,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:44,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:44,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:44,742 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:13:44,742 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:44,743 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 72#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2020-11-28 03:13:44,743 INFO L796 eck$LassoCheckResult]: Loop: 74#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 73#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2020-11-28 03:13:44,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:44,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 03:13:44,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:44,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395470307] [2020-11-28 03:13:44,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:44,751 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:44,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:44,757 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:44,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:44,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-11-28 03:13:44,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:44,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259515597] [2020-11-28 03:13:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:44,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:44,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:44,772 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:44,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:44,773 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-11-28 03:13:44,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:44,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308680749] [2020-11-28 03:13:44,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:44,781 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:44,786 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:44,788 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:44,822 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:44,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:44,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:44,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:44,823 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:13:44,823 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:44,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:44,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:44,823 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2020-11-28 03:13:44,823 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:44,823 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:44,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:44,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:44,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:44,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:44,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:44,951 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:44,951 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:44,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:44,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:13:44,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:44,968 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,024 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:45,024 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:13:45,028 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:45,028 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:45,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:13:45,065 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:45,065 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/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) [2020-11-28 03:13:45,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:45,122 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:13:45,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:13:45,255 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:13:45,257 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:45,257 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:45,257 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:45,258 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:45,258 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:13:45,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,258 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:45,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:45,258 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2020-11-28 03:13:45,258 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:45,258 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:45,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,429 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:45,429 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:45,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:45,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:45,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:45,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:45,456 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:45,456 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:45,463 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,493 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:45,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:45,495 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:45,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:45,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:45,500 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:45,500 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:45,515 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,547 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:45,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:45,549 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:45,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:45,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:45,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:45,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:45,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:45,552 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,579 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:45,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:45,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:45,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:45,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:45,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:45,594 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:45,594 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:13:45,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:13:45,600 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:13:45,600 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,607 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:13:45,607 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:13:45,607 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:13:45,608 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-28 03:13:45,639 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:13:45,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:45,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:45,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:45,699 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:13:45,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:45,761 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:13:45,762 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-28 03:13:45,800 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2020-11-28 03:13:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:13:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:13:45,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-28 03:13:45,804 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:45,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:13:45,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:45,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-28 03:13:45,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:45,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2020-11-28 03:13:45,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:45,808 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2020-11-28 03:13:45,808 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:13:45,808 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-28 03:13:45,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2020-11-28 03:13:45,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:13:45,808 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-11-28 03:13:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2020-11-28 03:13:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2020-11-28 03:13:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:13:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-28 03:13:45,810 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 03:13:45,810 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-28 03:13:45,811 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:13:45,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2020-11-28 03:13:45,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:45,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:45,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:45,812 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-11-28 03:13:45,812 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:45,812 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 125#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 126#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 131#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2020-11-28 03:13:45,813 INFO L796 eck$LassoCheckResult]: Loop: 129#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 130#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2020-11-28 03:13:45,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:45,813 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-11-28 03:13:45,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:45,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25541073] [2020-11-28 03:13:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:45,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:45,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:45,858 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-11-28 03:13:45,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:45,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033282961] [2020-11-28 03:13:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:45,865 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:45,869 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:45,882 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:45,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:45,884 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2020-11-28 03:13:45,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:45,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392478301] [2020-11-28 03:13:45,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:45,903 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:45,923 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:45,928 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:45,951 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:45,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:45,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:45,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:45,952 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:13:45,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:45,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:45,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:45,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2020-11-28 03:13:45,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:45,953 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:45,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:45,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:46,072 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:46,072 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:46,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:46,086 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:46,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:13:46,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:13:46,246 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:13:46,248 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:46,248 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:46,248 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:46,248 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:46,248 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:13:46,248 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:46,248 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:46,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:46,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2020-11-28 03:13:46,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:46,249 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:46,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:46,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:46,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:46,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:46,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:46,461 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:46,461 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:46,465 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:13:46,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:46,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:46,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:46,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:46,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:46,469 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:13:46,469 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:46,473 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:13:46,478 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:13:46,478 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_305af750-25a0-4eef-8c54-dba5d4eff81f/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:13:46,483 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:13:46,483 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:13:46,483 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:13:46,484 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:46,527 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:13:46,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:46,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:46,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:46,566 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:13:46,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:46,582 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:13:46,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-28 03:13:46,608 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2020-11-28 03:13:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:13:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:46,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:13:46,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:13:46,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:46,611 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:13:46,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:46,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:46,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:46,648 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:13:46,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:46,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:46,680 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:13:46,680 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-28 03:13:46,711 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2020-11-28 03:13:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:13:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-28 03:13:46,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:13:46,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:46,713 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:13:46,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:46,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:46,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:46,762 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:13:46,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:46,782 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:13:46,782 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2020-11-28 03:13:46,812 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2020-11-28 03:13:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:13:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-28 03:13:46,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:13:46,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:46,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-28 03:13:46,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:46,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-28 03:13:46,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:46,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2020-11-28 03:13:46,818 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:13:46,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2020-11-28 03:13:46,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:13:46,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:13:46,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:13:46,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:13:46,818 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:46,818 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:46,818 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:13:46,819 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:13:46,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:13:46,819 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:13:46,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:13:46,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:13:46 BoogieIcfgContainer [2020-11-28 03:13:46,830 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:13:46,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:46,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:46,831 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:46,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:42" (3/4) ... [2020-11-28 03:13:46,836 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:13:46,836 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:46,843 INFO L168 Benchmark]: Toolchain (without parser) took 4729.64 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 52.6 MB in the beginning and 47.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,845 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 81.8 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:46,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.52 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 52.6 MB in the beginning and 86.2 MB in the end (delta: -33.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 107.0 MB. Free memory was 86.2 MB in the beginning and 84.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:46,849 INFO L168 Benchmark]: Boogie Preprocessor took 22.22 ms. Allocated memory is still 107.0 MB. Free memory was 84.9 MB in the beginning and 84.3 MB in the end (delta: 646.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:46,849 INFO L168 Benchmark]: RCFGBuilder took 269.92 ms. Allocated memory is still 107.0 MB. Free memory was 84.3 MB in the beginning and 75.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,850 INFO L168 Benchmark]: BuchiAutomizer took 4050.34 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 47.5 MB in the end (delta: 28.4 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:46,850 INFO L168 Benchmark]: Witness Printer took 5.78 ms. Allocated memory is still 107.0 MB. Free memory is still 47.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:46,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 81.8 MB. Free memory was 43.5 MB in the beginning and 43.4 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.52 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 52.6 MB in the beginning and 86.2 MB in the end (delta: -33.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.38 ms. Allocated memory is still 107.0 MB. Free memory was 86.2 MB in the beginning and 84.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.22 ms. Allocated memory is still 107.0 MB. Free memory was 84.9 MB in the beginning and 84.3 MB in the end (delta: 646.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 269.92 ms. Allocated memory is still 107.0 MB. Free memory was 84.3 MB in the beginning and 75.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4050.34 ms. Allocated memory is still 107.0 MB. Free memory was 75.9 MB in the beginning and 47.5 MB in the end (delta: 28.4 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.78 ms. Allocated memory is still 107.0 MB. Free memory is still 47.5 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 32 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...