./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:24:46,884 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:24:46,885 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:24:46,892 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:24:46,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:24:46,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:24:46,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:24:46,895 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:24:46,896 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:24:46,896 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:24:46,897 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:24:46,897 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:24:46,898 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:24:46,898 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:24:46,899 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:24:46,900 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:24:46,900 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:24:46,901 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:24:46,903 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:24:46,904 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:24:46,905 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:24:46,905 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:24:46,907 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:24:46,907 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:24:46,907 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:24:46,908 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:24:46,908 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:24:46,909 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:24:46,910 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:24:46,910 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:24:46,910 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:24:46,911 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:24:46,911 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:24:46,911 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:24:46,912 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:24:46,912 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:24:46,913 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 13:24:46,922 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:24:46,922 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:24:46,923 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 13:24:46,923 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 13:24:46,923 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 13:24:46,923 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 13:24:46,924 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 13:24:46,924 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 13:24:46,924 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 13:24:46,924 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 13:24:46,924 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 13:24:46,924 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:24:46,925 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 13:24:46,925 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:24:46,925 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:24:46,925 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 13:24:46,925 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 13:24:46,925 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 13:24:46,925 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:24:46,926 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 13:24:46,926 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:24:46,926 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 13:24:46,926 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:24:46,926 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:24:46,926 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 13:24:46,927 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:24:46,927 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 13:24:46,927 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 13:24:46,928 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 13:24:46,928 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2018-11-23 13:24:46,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:24:46,957 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:24:46,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:24:46,960 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:24:46,960 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:24:46,961 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-23 13:24:46,996 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/data/e1e302da2/9eda07c83581497c95bb01b6502b746d/FLAG1d48931d5 [2018-11-23 13:24:47,388 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:24:47,389 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-23 13:24:47,392 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/data/e1e302da2/9eda07c83581497c95bb01b6502b746d/FLAG1d48931d5 [2018-11-23 13:24:47,401 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/data/e1e302da2/9eda07c83581497c95bb01b6502b746d [2018-11-23 13:24:47,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:24:47,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:24:47,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:24:47,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:24:47,407 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:24:47,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd21f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47, skipping insertion in model container [2018-11-23 13:24:47,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:24:47,425 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:24:47,524 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:24:47,526 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:24:47,535 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:24:47,542 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:24:47,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47 WrapperNode [2018-11-23 13:24:47,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:24:47,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:24:47,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:24:47,543 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:24:47,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:24:47,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:24:47,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:24:47,562 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:24:47,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... [2018-11-23 13:24:47,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:24:47,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:24:47,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:24:47,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:24:47,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:24:47,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:24:47,742 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:24:47,743 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-23 13:24:47,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:24:47 BoogieIcfgContainer [2018-11-23 13:24:47,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:24:47,744 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 13:24:47,744 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 13:24:47,746 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 13:24:47,747 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 13:24:47,747 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:24:47" (1/3) ... [2018-11-23 13:24:47,748 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287e4b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:24:47, skipping insertion in model container [2018-11-23 13:24:47,748 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 13:24:47,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:24:47" (2/3) ... [2018-11-23 13:24:47,748 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287e4b57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:24:47, skipping insertion in model container [2018-11-23 13:24:47,748 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 13:24:47,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:24:47" (3/3) ... [2018-11-23 13:24:47,750 INFO L375 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-23 13:24:47,786 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 13:24:47,786 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 13:24:47,786 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 13:24:47,787 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 13:24:47,787 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:24:47,787 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:24:47,787 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 13:24:47,787 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:24:47,787 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 13:24:47,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 13:24:47,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 13:24:47,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 13:24:47,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 13:24:47,815 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 13:24:47,815 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 13:24:47,815 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 13:24:47,815 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 13:24:47,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 13:24:47,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 13:24:47,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 13:24:47,816 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 13:24:47,816 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 13:24:47,821 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2018-11-23 13:24:47,822 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 10#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2018-11-23 13:24:47,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-23 13:24:47,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:47,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:47,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:47,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:47,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:47,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:47,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-11-23 13:24:47,887 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:47,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:47,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:47,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:47,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:47,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:47,899 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-11-23 13:24:47,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:47,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:47,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:47,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:47,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:47,950 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:47,950 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:47,951 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:47,951 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:47,951 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 13:24:47,951 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:47,951 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:47,951 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:47,951 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-23 13:24:47,951 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:47,952 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:47,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:47,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:47,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:47,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:47,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:47,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,115 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:48,115 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,122 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,122 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,127 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,127 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,143 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,143 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,158 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,158 INFO L448 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/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,161 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,162 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,164 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,164 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,180 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,180 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,182 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,183 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:48,197 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,198 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,213 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,213 INFO L448 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/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:48,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,217 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,235 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 13:24:48,236 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,328 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 13:24:48,329 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:48,329 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:48,329 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:48,329 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:48,329 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 13:24:48,329 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,330 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:48,330 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:48,330 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-23 13:24:48,330 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:48,330 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:48,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,400 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:48,403 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 13:24:48,404 INFO L122 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 [2018-11-23 13:24:48,405 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:48,405 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:48,406 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:48,406 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:48,406 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:48,407 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:48,407 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:48,409 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:48,409 INFO L122 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 [2018-11-23 13:24:48,410 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:48,410 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:48,410 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:48,410 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:48,410 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:48,411 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:48,411 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:48,412 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:48,412 INFO L122 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 [2018-11-23 13:24:48,413 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:48,413 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:48,413 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:48,413 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:48,415 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:48,415 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:48,419 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:48,419 INFO L122 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 [2018-11-23 13:24:48,420 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:48,420 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:48,420 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:48,420 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:48,420 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:48,421 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:48,421 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:48,421 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:48,422 INFO L122 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 [2018-11-23 13:24:48,422 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:48,422 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:48,422 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:48,422 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:48,423 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:48,423 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:48,429 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:48,429 INFO L122 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 [2018-11-23 13:24:48,430 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:48,430 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:48,430 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:48,430 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:48,432 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:48,432 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:48,454 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 13:24:48,469 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 13:24:48,470 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 13:24:48,471 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 13:24:48,473 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-23 13:24:48,473 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 13:24:48,474 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-23 13:24:48,476 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 13:24:48,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:48,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:48,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:48,570 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 13:24:48,571 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-23 13:24:48,614 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-11-23 13:24:48,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:48,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 13:24:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-23 13:24:48,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-23 13:24:48,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:48,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 13:24:48,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:48,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-23 13:24:48,618 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:48,619 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-23 13:24:48,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 13:24:48,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-11-23 13:24:48,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 13:24:48,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-23 13:24:48,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-11-23 13:24:48,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 13:24:48,625 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-23 13:24:48,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-11-23 13:24:48,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-23 13:24:48,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 13:24:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-11-23 13:24:48,640 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-23 13:24:48,640 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-23 13:24:48,640 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 13:24:48,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-11-23 13:24:48,641 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 13:24:48,641 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 13:24:48,641 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 13:24:48,641 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-23 13:24:48,641 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 13:24:48,641 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 88#L20-2 assume !!(main_~y1~0 != main_~y2~0); 87#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 83#L20-2 [2018-11-23 13:24:48,641 INFO L796 eck$LassoCheckResult]: Loop: 83#L20-2 assume !!(main_~y1~0 != main_~y2~0); 84#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 83#L20-2 [2018-11-23 13:24:48,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:48,641 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-11-23 13:24:48,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:48,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:48,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:48,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:48,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:48,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:48,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-11-23 13:24:48,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:48,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:48,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:48,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:48,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:48,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:48,653 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2018-11-23 13:24:48,653 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:48,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:48,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:48,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:48,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:48,694 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:48,694 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:48,694 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:48,695 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:48,695 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 13:24:48,695 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,695 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:48,695 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:48,695 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-23 13:24:48,695 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:48,695 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:48,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:48,789 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:48,789 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:48,792 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,792 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,816 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,816 INFO L448 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/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:48,821 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,821 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,824 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,824 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,845 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,845 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,847 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,847 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:48,872 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,872 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,874 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,874 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:48,889 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,889 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:48,903 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:48,904 INFO L448 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/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:48,906 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:48,906 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:48,925 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 13:24:48,925 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,015 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 13:24:49,016 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:49,016 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:49,016 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:49,016 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:49,016 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 13:24:49,016 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,016 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:49,016 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:49,017 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-23 13:24:49,017 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:49,017 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:49,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,086 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:49,086 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 13:24:49,087 INFO L122 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 [2018-11-23 13:24:49,087 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,087 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,087 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,088 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,089 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:49,089 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:49,091 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:49,092 INFO L122 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 [2018-11-23 13:24:49,092 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,092 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:49,096 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,096 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,096 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,097 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:49,097 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:49,097 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:49,098 INFO L122 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 [2018-11-23 13:24:49,098 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,098 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:49,098 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,098 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,098 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,098 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:49,099 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:49,099 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:49,099 INFO L122 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 [2018-11-23 13:24:49,099 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,099 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:49,100 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,100 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,100 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,100 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:49,100 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:49,100 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:49,101 INFO L122 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 [2018-11-23 13:24:49,101 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,101 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,101 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,102 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,103 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:49,103 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:49,112 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 13:24:49,121 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 13:24:49,121 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 13:24:49,122 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 13:24:49,123 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-23 13:24:49,123 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 13:24:49,123 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-23 13:24:49,129 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 13:24:49,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:49,172 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-23 13:24:49,172 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-23 13:24:49,204 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2018-11-23 13:24:49,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-23 13:24:49,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 13:24:49,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 13:24:49,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-23 13:24:49,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,206 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2018-11-23 13:24:49,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 13:24:49,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2018-11-23 13:24:49,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 13:24:49,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 13:24:49,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2018-11-23 13:24:49,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 13:24:49,207 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-11-23 13:24:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2018-11-23 13:24:49,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-23 13:24:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 13:24:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-11-23 13:24:49,209 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-11-23 13:24:49,209 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-11-23 13:24:49,209 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 13:24:49,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2018-11-23 13:24:49,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 13:24:49,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 13:24:49,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 13:24:49,210 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2018-11-23 13:24:49,210 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 13:24:49,210 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 153#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 159#L20-2 assume !!(main_~y1~0 != main_~y2~0); 160#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 154#L20-2 [2018-11-23 13:24:49,210 INFO L796 eck$LassoCheckResult]: Loop: 154#L20-2 assume !!(main_~y1~0 != main_~y2~0); 155#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 154#L20-2 [2018-11-23 13:24:49,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,211 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2018-11-23 13:24:49,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:49,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:49,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:49,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2018-11-23 13:24:49,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:49,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:49,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,218 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:49,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,223 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2018-11-23 13:24:49,223 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:49,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:49,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,224 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:49,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,282 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:49,282 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:49,282 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:49,282 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:49,282 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 13:24:49,282 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,282 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:49,282 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:49,282 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-23 13:24:49,282 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:49,282 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:49,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,347 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:49,347 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:49,354 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,354 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,356 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:49,356 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:49,371 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,371 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,373 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:49,373 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:49,388 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,388 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:49,406 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 13:24:49,406 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,490 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 13:24:49,491 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:49,491 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:49,491 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:49,491 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:49,492 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 13:24:49,492 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,492 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:49,492 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:49,492 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-23 13:24:49,492 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:49,492 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:49,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,533 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:49,533 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 13:24:49,533 INFO L122 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 [2018-11-23 13:24:49,534 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,534 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:49,534 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,534 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,534 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,535 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:49,535 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:49,535 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:49,535 INFO L122 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 [2018-11-23 13:24:49,536 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,536 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:49,536 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,536 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,536 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,537 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:49,537 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:49,537 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:49,538 INFO L122 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 [2018-11-23 13:24:49,538 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,538 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,538 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,538 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,539 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:49,539 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:49,541 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:49,541 INFO L122 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 [2018-11-23 13:24:49,542 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:49,542 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:49,542 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:49,542 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:49,543 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:49,544 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:49,551 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 13:24:49,561 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-23 13:24:49,561 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-23 13:24:49,561 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 13:24:49,563 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-23 13:24:49,563 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 13:24:49,563 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0) = 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-23 13:24:49,566 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 13:24:49,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:49,607 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-23 13:24:49,607 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-23 13:24:49,630 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-11-23 13:24:49,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-23 13:24:49,631 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 13:24:49,631 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,631 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 13:24:49,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:49,655 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-23 13:24:49,656 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-23 13:24:49,674 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-11-23 13:24:49,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:49,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-23 13:24:49,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 13:24:49,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,676 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 13:24:49,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:49,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:49,701 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-23 13:24:49,701 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-23 13:24:49,728 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 16 states and 24 transitions. Complement of second has 5 states. [2018-11-23 13:24:49,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:49,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:49,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-23 13:24:49,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 13:24:49,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-23 13:24:49,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 13:24:49,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:49,729 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2018-11-23 13:24:49,730 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 13:24:49,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2018-11-23 13:24:49,730 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-23 13:24:49,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-23 13:24:49,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-11-23 13:24:49,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 13:24:49,730 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-23 13:24:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-11-23 13:24:49,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2018-11-23 13:24:49,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-23 13:24:49,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-23 13:24:49,731 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-23 13:24:49,731 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-23 13:24:49,731 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 13:24:49,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-23 13:24:49,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 13:24:49,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 13:24:49,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 13:24:49,732 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 13:24:49,732 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 13:24:49,732 INFO L794 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 331#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 332#L20-2 [2018-11-23 13:24:49,732 INFO L796 eck$LassoCheckResult]: Loop: 332#L20-2 assume !!(main_~y1~0 != main_~y2~0); 334#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 332#L20-2 [2018-11-23 13:24:49,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,733 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-11-23 13:24:49,733 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:49,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:49,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,734 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:49,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,736 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2018-11-23 13:24:49,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:49,736 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:49,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,737 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:49,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:49,741 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2018-11-23 13:24:49,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:49,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:49,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:49,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:49,794 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:49,794 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:49,794 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:49,794 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:49,794 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 13:24:49,794 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,794 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:49,794 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:49,794 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-23 13:24:49,794 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:49,794 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:49,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:49,842 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:49,843 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:49,844 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,845 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,850 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:49,850 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:49,865 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,865 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,869 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:49,869 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,883 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,883 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,898 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:49,898 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/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 [2018-11-23 13:24:49,901 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,901 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,903 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:49,903 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,920 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,920 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:49,934 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:49,934 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,937 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:49,937 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:49,954 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 13:24:49,954 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:50,046 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 13:24:50,047 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:50,047 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:50,047 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:50,048 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:50,048 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 13:24:50,048 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,048 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:50,048 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:50,048 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-23 13:24:50,048 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:50,048 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:50,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,095 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:50,095 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 13:24:50,096 INFO L122 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 [2018-11-23 13:24:50,096 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:50,096 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:50,096 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:50,097 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:50,097 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:50,097 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 13:24:50,097 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:50,097 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:50,098 INFO L122 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 [2018-11-23 13:24:50,098 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:50,098 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:50,098 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:50,098 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:50,099 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:50,099 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:50,107 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 13:24:50,113 INFO L443 ModelExtractionUtils]: Simplification made 7 calls to the SMT solver. [2018-11-23 13:24:50,114 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2018-11-23 13:24:50,114 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 13:24:50,115 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-23 13:24:50,115 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 13:24:50,115 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-11-23 13:24:50,119 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 13:24:50,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,139 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,143 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:50,144 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 13:24:50,144 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-23 13:24:50,155 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 12 states and 18 transitions. Complement of second has 5 states. [2018-11-23 13:24:50,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 13:24:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 13:24:50,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-23 13:24:50,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 13:24:50,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-23 13:24:50,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,156 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2018-11-23 13:24:50,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 13:24:50,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2018-11-23 13:24:50,157 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 13:24:50,157 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 13:24:50,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-11-23 13:24:50,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 13:24:50,157 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-23 13:24:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-11-23 13:24:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-11-23 13:24:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 13:24:50,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-11-23 13:24:50,158 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-23 13:24:50,158 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-23 13:24:50,158 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 13:24:50,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2018-11-23 13:24:50,158 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 13:24:50,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 13:24:50,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 13:24:50,160 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-23 13:24:50,160 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 13:24:50,160 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 390#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 391#L20-2 assume !!(main_~y1~0 != main_~y2~0); 392#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 397#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-11-23 13:24:50,160 INFO L796 eck$LassoCheckResult]: Loop: 395#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 396#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-11-23 13:24:50,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,160 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2018-11-23 13:24:50,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:50,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:50,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:50,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2018-11-23 13:24:50,164 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:50,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:50,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,165 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:50,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2018-11-23 13:24:50,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:50,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:50,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,169 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:50,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,199 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:50,199 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:50,200 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:50,200 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:50,200 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 13:24:50,200 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,200 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:50,200 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:50,200 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-23 13:24:50,200 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:50,200 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:50,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,259 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:50,259 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:50,268 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,288 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 13:24:50,288 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:50,487 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 13:24:50,488 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:50,488 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:50,488 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:50,488 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:50,488 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 13:24:50,489 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,489 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:50,489 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:50,489 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-23 13:24:50,489 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:50,489 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:50,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,541 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:50,541 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 13:24:50,541 INFO L122 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 [2018-11-23 13:24:50,542 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:50,542 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:50,542 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:50,542 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:50,543 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:50,543 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:50,545 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:50,545 INFO L122 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 [2018-11-23 13:24:50,545 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:50,545 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-11-23 13:24:50,546 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 13:24:50,546 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:50,548 INFO L402 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2018-11-23 13:24:50,548 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-23 13:24:50,579 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 13:24:50,588 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 13:24:50,588 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 13:24:50,589 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 13:24:50,591 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-23 13:24:50,591 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 13:24:50,591 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = 2*ULTIMATE.start_main_~y2~0 - 2*ULTIMATE.start_main_~y1~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-11-23 13:24:50,598 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-23 13:24:50,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:50,664 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-11-23 13:24:50,664 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 13:24:50,689 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 14 states and 18 transitions. Complement of second has 6 states. [2018-11-23 13:24:50,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-11-23 13:24:50,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 13:24:50,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,690 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 13:24:50,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:50,738 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2018-11-23 13:24:50,738 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 13:24:50,765 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 11 states and 15 transitions. Complement of second has 6 states. [2018-11-23 13:24:50,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:50,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-23 13:24:50,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 13:24:50,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,766 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 13:24:50,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:50,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:50,801 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-11-23 13:24:50,801 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-23 13:24:50,822 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2018-11-23 13:24:50,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-23 13:24:50,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 13:24:50,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-23 13:24:50,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-23 13:24:50,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:50,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2018-11-23 13:24:50,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 13:24:50,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 17 transitions. [2018-11-23 13:24:50,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-23 13:24:50,825 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 13:24:50,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-11-23 13:24:50,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 13:24:50,825 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-11-23 13:24:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-11-23 13:24:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2018-11-23 13:24:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 13:24:50,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-11-23 13:24:50,826 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-23 13:24:50,826 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-23 13:24:50,826 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 13:24:50,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-11-23 13:24:50,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 13:24:50,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 13:24:50,827 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 13:24:50,827 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-23 13:24:50,827 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-11-23 13:24:50,827 INFO L794 eck$LassoCheckResult]: Stem: 554#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 555#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 556#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-11-23 13:24:50,827 INFO L796 eck$LassoCheckResult]: Loop: 560#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 559#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-11-23 13:24:50,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,828 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 3 times [2018-11-23 13:24:50,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:50,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:50,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:50,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1472761, now seen corresponding path program 1 times [2018-11-23 13:24:50,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:50,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:50,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,833 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 13:24:50,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash -204426530, now seen corresponding path program 4 times [2018-11-23 13:24:50,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 13:24:50,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 13:24:50,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:24:50,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:24:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:24:50,876 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:50,876 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:50,876 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:50,876 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:50,876 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 13:24:50,876 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,876 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:50,876 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:50,877 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 13:24:50,877 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:50,877 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:50,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:50,941 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:50,941 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,944 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:50,944 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:50,959 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:50,959 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,962 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:50,962 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:50,976 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 13:24:50,976 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,979 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 13:24:50,979 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_87210047-a3c9-4a04-a86a-6887119a0b3e/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:50,997 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 13:24:50,997 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 13:24:51,370 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 13:24:51,372 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 13:24:51,372 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 13:24:51,372 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 13:24:51,372 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 13:24:51,372 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 13:24:51,372 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 13:24:51,372 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 13:24:51,372 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 13:24:51,373 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 13:24:51,373 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 13:24:51,373 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 13:24:51,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:51,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:51,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 13:24:51,437 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 13:24:51,437 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 13:24:51,438 INFO L122 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 [2018-11-23 13:24:51,438 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:51,438 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:51,438 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 13:24:51,438 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:51,439 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 13:24:51,439 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 13:24:51,440 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 13:24:51,440 INFO L122 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 [2018-11-23 13:24:51,441 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 13:24:51,441 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 13:24:51,441 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 13:24:51,441 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 13:24:51,441 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 13:24:51,441 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 13:24:51,441 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 13:24:51,443 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 13:24:51,445 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 13:24:51,445 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-23 13:24:51,446 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 13:24:51,446 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 13:24:51,446 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 13:24:51,446 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y2~0 Supporting invariants [] [2018-11-23 13:24:51,446 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 13:24:51,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:24:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:51,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:24:51,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 13:24:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:24:51,509 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 13:24:51,509 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-11-23 13:24:51,519 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 27 states and 41 transitions. Complement of second has 6 states. [2018-11-23 13:24:51,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 13:24:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 13:24:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-23 13:24:51,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-23 13:24:51,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:51,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-23 13:24:51,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:51,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-23 13:24:51,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 13:24:51,520 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2018-11-23 13:24:51,520 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 13:24:51,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-11-23 13:24:51,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 13:24:51,521 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 13:24:51,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 13:24:51,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 13:24:51,521 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:24:51,521 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:24:51,521 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:24:51,521 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-23 13:24:51,521 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:24:51,521 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 13:24:51,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 13:24:51,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:24:51 BoogieIcfgContainer [2018-11-23 13:24:51,525 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 13:24:51,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:24:51,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:24:51,526 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:24:51,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:24:47" (3/4) ... [2018-11-23 13:24:51,529 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 13:24:51,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:24:51,529 INFO L168 Benchmark]: Toolchain (without parser) took 4125.92 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.9 MB). Free memory was 959.1 MB in the beginning and 938.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 244.1 MB. Max. memory is 11.5 GB. [2018-11-23 13:24:51,530 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:24:51,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.27 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:24:51,531 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.13 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:24:51,531 INFO L168 Benchmark]: Boogie Preprocessor took 11.01 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:24:51,532 INFO L168 Benchmark]: RCFGBuilder took 169.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 13:24:51,532 INFO L168 Benchmark]: BuchiAutomizer took 3781.49 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 943.6 MB in the end (delta: 179.3 MB). Peak memory consumption was 263.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:24:51,533 INFO L168 Benchmark]: Witness Printer took 3.40 ms. Allocated memory is still 1.3 GB. Free memory was 943.6 MB in the beginning and 938.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:24:51,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 138.27 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.13 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.01 ms. Allocated memory is still 1.0 GB. Free memory is still 945.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 169.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3781.49 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 83.9 MB). Free memory was 1.1 GB in the beginning and 943.6 MB in the end (delta: 179.3 MB). Peak memory consumption was 263.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.40 ms. Allocated memory is still 1.3 GB. Free memory was 943.6 MB in the beginning and 938.9 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function y1 + -1 * y2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + y2 and consists of 3 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function y1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y2 + -2 * y1 + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. 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 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 32 SDtfs, 45 SDslu, 3 SDs, 0 SdLazy, 97 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf92 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf96 smp87 dnf123 smp96 tf100 neg95 sie124 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 46ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...