./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 b98f7fd40026cd249d1c292b5307435abc3c32a2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 14:06:42,762 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:06:42,764 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:06:42,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:06:42,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:06:42,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:06:42,772 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:06:42,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:06:42,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:06:42,775 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:06:42,776 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:06:42,776 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:06:42,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:06:42,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:06:42,778 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:06:42,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:06:42,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:06:42,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:06:42,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:06:42,782 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:06:42,783 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:06:42,784 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:06:42,785 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:06:42,786 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:06:42,786 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:06:42,786 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:06:42,787 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:06:42,788 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:06:42,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:06:42,789 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:06:42,789 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:06:42,790 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:06:42,790 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:06:42,790 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:06:42,790 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:06:42,791 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:06:42,791 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 14:06:42,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:06:42,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:06:42,803 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:06:42,803 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:06:42,803 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:06:42,803 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 14:06:42,803 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 14:06:42,804 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:06:42,804 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 14:06:42,805 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 14:06:42,805 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 14:06:42,805 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:06:42,805 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 14:06:42,805 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:06:42,805 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 14:06:42,805 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:06:42,805 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:06:42,806 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 14:06:42,806 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:06:42,806 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:06:42,806 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 14:06:42,806 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 14:06:42,806 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 -> b98f7fd40026cd249d1c292b5307435abc3c32a2 [2018-11-18 14:06:42,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:06:42,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:06:42,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:06:42,838 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:06:42,838 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:06:42,838 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-18 14:06:42,874 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/data/89632e9b0/92ddac7bc2f04773afef5922ccdf6baf/FLAG81b6448b5 [2018-11-18 14:06:43,277 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:06:43,278 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-18 14:06:43,281 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/data/89632e9b0/92ddac7bc2f04773afef5922ccdf6baf/FLAG81b6448b5 [2018-11-18 14:06:43,291 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/data/89632e9b0/92ddac7bc2f04773afef5922ccdf6baf [2018-11-18 14:06:43,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:06:43,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:06:43,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:06:43,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:06:43,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:06:43,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4915a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43, skipping insertion in model container [2018-11-18 14:06:43,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:06:43,318 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:06:43,415 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:06:43,417 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:06:43,426 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:06:43,434 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:06:43,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43 WrapperNode [2018-11-18 14:06:43,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:06:43,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:06:43,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:06:43,435 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:06:43,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:06:43,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:06:43,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:06:43,452 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:06:43,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,458 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... [2018-11-18 14:06:43,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:06:43,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:06:43,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:06:43,463 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:06:43,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:06:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:06:43,619 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:06:43,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:06:43 BoogieIcfgContainer [2018-11-18 14:06:43,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:06:43,620 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 14:06:43,620 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 14:06:43,622 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 14:06:43,623 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:06:43,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 02:06:43" (1/3) ... [2018-11-18 14:06:43,623 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ea55d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 02:06:43, skipping insertion in model container [2018-11-18 14:06:43,623 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:06:43,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:06:43" (2/3) ... [2018-11-18 14:06:43,624 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ea55d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 02:06:43, skipping insertion in model container [2018-11-18 14:06:43,624 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:06:43,624 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:06:43" (3/3) ... [2018-11-18 14:06:43,625 INFO L375 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c [2018-11-18 14:06:43,660 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:06:43,661 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 14:06:43,661 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 14:06:43,661 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 14:06:43,661 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:06:43,661 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:06:43,661 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 14:06:43,661 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:06:43,661 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 14:06:43,670 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 14:06:43,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 14:06:43,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:43,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:43,688 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 14:06:43,688 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 14:06:43,688 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 14:06:43,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-18 14:06:43,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 14:06:43,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:43,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:43,689 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 14:06:43,689 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 14:06:43,694 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 13#L20true assume main_~k~0 >= 1;main_~i~0 := 0; 9#L22-3true [2018-11-18 14:06:43,694 INFO L796 eck$LassoCheckResult]: Loop: 9#L22-3true assume true; 4#L22-1true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 5#L24-3true assume !true; 14#L24-4true main_~i~0 := 1 + main_~i~0; 9#L22-3true [2018-11-18 14:06:43,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:43,698 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2018-11-18 14:06:43,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:43,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:43,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:43,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:43,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:43,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1206921, now seen corresponding path program 1 times [2018-11-18 14:06:43,762 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:43,762 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:43,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:43,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:43,783 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:06:43,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:06:43,788 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 14:06:43,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:06:43,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:06:43,802 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-11-18 14:06:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:43,806 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-11-18 14:06:43,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:06:43,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-11-18 14:06:43,808 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 14:06:43,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2018-11-18 14:06:43,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 14:06:43,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-18 14:06:43,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2018-11-18 14:06:43,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 14:06:43,812 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-18 14:06:43,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2018-11-18 14:06:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-18 14:06:43,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-18 14:06:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-11-18 14:06:43,833 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-18 14:06:43,833 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-18 14:06:43,833 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 14:06:43,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2018-11-18 14:06:43,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-18 14:06:43,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:43,834 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:43,834 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 14:06:43,834 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-18 14:06:43,834 INFO L794 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 32#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 33#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 39#L22-3 [2018-11-18 14:06:43,835 INFO L796 eck$LassoCheckResult]: Loop: 39#L22-3 assume true; 34#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 35#L24-3 assume true; 36#L24-1 assume !(main_~j~0 <= main_~i~0); 38#L24-4 main_~i~0 := 1 + main_~i~0; 39#L22-3 [2018-11-18 14:06:43,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:43,835 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 2 times [2018-11-18 14:06:43,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:43,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:43,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:43,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:43,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:43,841 INFO L82 PathProgramCache]: Analyzing trace with hash 37406706, now seen corresponding path program 1 times [2018-11-18 14:06:43,841 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:43,841 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:43,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:43,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:43,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:43,850 INFO L82 PathProgramCache]: Analyzing trace with hash 119476209, now seen corresponding path program 1 times [2018-11-18 14:06:43,850 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:43,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:43,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:43,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:43,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:43,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:06:43,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:06:43,911 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:43,911 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:43,912 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:43,912 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:43,912 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:06:43,912 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:43,912 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:43,912 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:43,912 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 14:06:43,912 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:43,912 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:43,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:43,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:43,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,047 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:44,047 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,050 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:44,051 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:44,069 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:44,069 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,073 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:44,073 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:44,088 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:44,088 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,090 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:44,090 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,108 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:06:44,108 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:44,191 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:06:44,192 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:44,192 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:44,192 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:44,192 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:44,192 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:06:44,192 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:44,193 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:44,193 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:44,193 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 14:06:44,193 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:44,193 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:44,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,283 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:44,287 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:06:44,288 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 [2018-11-18 14:06:44,289 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:44,289 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:44,289 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:44,289 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:44,292 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:44,292 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:44,297 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:44,297 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 [2018-11-18 14:06:44,297 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:44,298 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:44,298 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:44,298 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:44,300 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:44,300 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:44,306 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:44,307 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 [2018-11-18 14:06:44,307 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:44,307 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:44,308 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:44,308 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:44,308 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:44,309 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:44,309 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:44,315 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:06:44,322 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-18 14:06:44,322 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-18 14:06:44,323 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:06:44,323 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:06:44,324 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:06:44,324 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-18 14:06:44,325 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:06:44,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:44,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:44,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:44,388 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 [2018-11-18 14:06:44,389 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-11-18 14:06:44,443 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 22 states and 27 transitions. Complement of second has 8 states. [2018-11-18 14:06:44,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-18 14:06:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 14:06:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2018-11-18 14:06:44,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 3 letters. Loop has 5 letters. [2018-11-18 14:06:44,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:44,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 8 letters. Loop has 5 letters. [2018-11-18 14:06:44,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:44,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 3 letters. Loop has 10 letters. [2018-11-18 14:06:44,448 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:44,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 27 transitions. [2018-11-18 14:06:44,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:06:44,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 26 transitions. [2018-11-18 14:06:44,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 14:06:44,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-18 14:06:44,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 26 transitions. [2018-11-18 14:06:44,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:06:44,451 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 26 transitions. [2018-11-18 14:06:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 26 transitions. [2018-11-18 14:06:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-18 14:06:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-18 14:06:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2018-11-18 14:06:44,453 INFO L728 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2018-11-18 14:06:44,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:06:44,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:06:44,453 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 4 states. [2018-11-18 14:06:44,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:44,474 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2018-11-18 14:06:44,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:06:44,474 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 21 transitions. [2018-11-18 14:06:44,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:06:44,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 11 states and 12 transitions. [2018-11-18 14:06:44,475 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 14:06:44,475 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-18 14:06:44,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2018-11-18 14:06:44,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 14:06:44,475 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-18 14:06:44,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2018-11-18 14:06:44,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-11-18 14:06:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-18 14:06:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2018-11-18 14:06:44,476 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-11-18 14:06:44,476 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-11-18 14:06:44,477 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 14:06:44,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2018-11-18 14:06:44,477 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:06:44,477 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:44,477 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:44,477 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-18 14:06:44,478 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2018-11-18 14:06:44,478 INFO L794 eck$LassoCheckResult]: Stem: 161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 156#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 157#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 163#L22-3 [2018-11-18 14:06:44,478 INFO L796 eck$LassoCheckResult]: Loop: 163#L22-3 assume true; 160#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 158#L24-3 assume true; 159#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 162#L24-3 assume true; 165#L24-1 assume !(main_~j~0 <= main_~i~0); 164#L24-4 main_~i~0 := 1 + main_~i~0; 163#L22-3 [2018-11-18 14:06:44,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,478 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 3 times [2018-11-18 14:06:44,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:44,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:44,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:44,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1588156812, now seen corresponding path program 1 times [2018-11-18 14:06:44,483 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:44,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:44,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:44,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,492 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1147429429, now seen corresponding path program 1 times [2018-11-18 14:06:44,492 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:44,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:44,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:44,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,524 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:44,524 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:44,524 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:44,524 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:44,524 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:06:44,524 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:44,524 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:44,524 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:44,524 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 14:06:44,524 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:44,525 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:44,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,570 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:44,571 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,573 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:44,573 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:44,604 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:44,604 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:44,607 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:44,623 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:44,623 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,628 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:44,628 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:44,645 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:06:44,645 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:44,764 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:06:44,766 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:44,766 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:44,766 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:44,766 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:44,766 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:06:44,766 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:44,766 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:44,766 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:44,766 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-18 14:06:44,767 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:44,767 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:44,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:44,839 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:44,839 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:06:44,840 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 [2018-11-18 14:06:44,841 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:44,841 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:44,841 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:44,841 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:44,842 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:44,842 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:44,845 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:44,846 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 [2018-11-18 14:06:44,846 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:44,846 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:44,847 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:44,847 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:44,847 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:44,847 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:44,848 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:44,852 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:06:44,856 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:06:44,856 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:06:44,857 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:06:44,857 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:06:44,857 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:06:44,857 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~k~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-18 14:06:44,858 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:06:44,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:44,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:44,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:44,894 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-18 14:06:44,894 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand 6 states. [2018-11-18 14:06:44,932 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 11 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 26 states and 31 transitions. Complement of second has 10 states. [2018-11-18 14:06:44,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2018-11-18 14:06:44,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-18 14:06:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2018-11-18 14:06:44,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 3 letters. Loop has 7 letters. [2018-11-18 14:06:44,933 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:44,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 10 letters. Loop has 7 letters. [2018-11-18 14:06:44,933 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:44,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 3 letters. Loop has 14 letters. [2018-11-18 14:06:44,934 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:44,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 31 transitions. [2018-11-18 14:06:44,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 14:06:44,935 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 25 states and 30 transitions. [2018-11-18 14:06:44,935 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 14:06:44,935 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-18 14:06:44,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 30 transitions. [2018-11-18 14:06:44,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:06:44,936 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 30 transitions. [2018-11-18 14:06:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 30 transitions. [2018-11-18 14:06:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-11-18 14:06:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 14:06:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2018-11-18 14:06:44,939 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-18 14:06:44,939 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-18 14:06:44,939 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 14:06:44,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 29 transitions. [2018-11-18 14:06:44,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-18 14:06:44,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:44,940 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:44,941 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 14:06:44,941 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1, 1] [2018-11-18 14:06:44,941 INFO L794 eck$LassoCheckResult]: Stem: 262#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 254#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 255#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 267#L22-3 assume true; 256#L22-1 [2018-11-18 14:06:44,941 INFO L796 eck$LassoCheckResult]: Loop: 256#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 257#L24-3 assume true; 260#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 263#L24-3 assume true; 272#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 271#L24-3 assume true; 270#L24-1 assume !(main_~j~0 <= main_~i~0); 268#L24-4 main_~i~0 := 1 + main_~i~0; 265#L22-3 assume true; 256#L22-1 [2018-11-18 14:06:44,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2018-11-18 14:06:44,942 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:44,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:44,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:44,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1504482198, now seen corresponding path program 2 times [2018-11-18 14:06:44,946 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:44,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:44,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:44,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:44,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:44,956 INFO L82 PathProgramCache]: Analyzing trace with hash 576161668, now seen corresponding path program 2 times [2018-11-18 14:06:44,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:44,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:44,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:44,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:44,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:06:44,984 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:06:44,990 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 14:06:44,994 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 14:06:44,995 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:06:44,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:45,047 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:06:45,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-18 14:06:45,081 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:45,081 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:45,081 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:45,081 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:45,081 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:06:45,082 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:45,082 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:45,082 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:45,082 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 14:06:45,082 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:45,082 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:45,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,122 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:45,123 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:45,131 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:45,132 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:45,147 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:45,147 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:45,149 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:45,149 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:45,166 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:06:45,166 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:45,480 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:06:45,481 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:45,481 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:45,481 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:45,481 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:45,481 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:06:45,481 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:45,482 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:45,482 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:45,482 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 14:06:45,482 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:45,482 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:45,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,536 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:45,536 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:06:45,536 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 [2018-11-18 14:06:45,537 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:45,537 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:45,538 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:45,538 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:45,539 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:45,539 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:45,543 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:45,543 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 [2018-11-18 14:06:45,543 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:45,544 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:45,544 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:45,544 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:45,544 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:45,545 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:45,545 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:45,549 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:06:45,553 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 14:06:45,553 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:06:45,553 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:06:45,554 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:06:45,554 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:06:45,554 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~k~0) = -1*ULTIMATE.start_main_~i~0 + 2*ULTIMATE.start_main_~k~0 Supporting invariants [] [2018-11-18 14:06:45,555 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:06:45,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:45,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:45,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:45,620 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2018-11-18 14:06:45,620 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 29 transitions. cyclomatic complexity: 7 Second operand 7 states. [2018-11-18 14:06:45,666 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 29 transitions. cyclomatic complexity: 7. Second operand 7 states. Result 66 states and 81 transitions. Complement of second has 12 states. [2018-11-18 14:06:45,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-18 14:06:45,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-18 14:06:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2018-11-18 14:06:45,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 9 letters. [2018-11-18 14:06:45,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:45,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 13 letters. Loop has 9 letters. [2018-11-18 14:06:45,667 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:45,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 18 letters. [2018-11-18 14:06:45,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:45,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 81 transitions. [2018-11-18 14:06:45,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-18 14:06:45,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 64 states and 79 transitions. [2018-11-18 14:06:45,670 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-18 14:06:45,670 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-11-18 14:06:45,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 79 transitions. [2018-11-18 14:06:45,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:06:45,670 INFO L705 BuchiCegarLoop]: Abstraction has 64 states and 79 transitions. [2018-11-18 14:06:45,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states and 79 transitions. [2018-11-18 14:06:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2018-11-18 14:06:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-18 14:06:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2018-11-18 14:06:45,673 INFO L728 BuchiCegarLoop]: Abstraction has 59 states and 74 transitions. [2018-11-18 14:06:45,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 14:06:45,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 14:06:45,674 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand 8 states. [2018-11-18 14:06:45,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:45,704 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2018-11-18 14:06:45,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 14:06:45,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 98 transitions. [2018-11-18 14:06:45,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-18 14:06:45,705 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 74 states and 89 transitions. [2018-11-18 14:06:45,705 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-18 14:06:45,705 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-18 14:06:45,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 89 transitions. [2018-11-18 14:06:45,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:06:45,705 INFO L705 BuchiCegarLoop]: Abstraction has 74 states and 89 transitions. [2018-11-18 14:06:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states and 89 transitions. [2018-11-18 14:06:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2018-11-18 14:06:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-18 14:06:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2018-11-18 14:06:45,708 INFO L728 BuchiCegarLoop]: Abstraction has 66 states and 79 transitions. [2018-11-18 14:06:45,708 INFO L608 BuchiCegarLoop]: Abstraction has 66 states and 79 transitions. [2018-11-18 14:06:45,708 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 14:06:45,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 79 transitions. [2018-11-18 14:06:45,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-18 14:06:45,709 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:45,709 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:45,709 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:06:45,709 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 1, 1, 1, 1] [2018-11-18 14:06:45,709 INFO L794 eck$LassoCheckResult]: Stem: 615#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 606#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 607#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 619#L22-3 assume true; 620#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 643#L24-3 assume true; 617#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 618#L24-3 assume true; 664#L24-1 assume !(main_~j~0 <= main_~i~0); 645#L24-4 main_~i~0 := 1 + main_~i~0; 634#L22-3 assume true; 631#L22-1 [2018-11-18 14:06:45,709 INFO L796 eck$LassoCheckResult]: Loop: 631#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 612#L24-3 assume true; 613#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 616#L24-3 assume true; 630#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 629#L24-3 assume true; 628#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 627#L24-3 assume true; 626#L24-1 assume !(main_~j~0 <= main_~i~0); 622#L24-4 main_~i~0 := 1 + main_~i~0; 623#L22-3 assume true; 631#L22-1 [2018-11-18 14:06:45,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:45,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1210573922, now seen corresponding path program 3 times [2018-11-18 14:06:45,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:45,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:45,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:45,710 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:45,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:45,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1598149968, now seen corresponding path program 3 times [2018-11-18 14:06:45,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:45,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:45,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:45,717 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:45,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:45,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:45,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1154303379, now seen corresponding path program 4 times [2018-11-18 14:06:45,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:45,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:45,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:45,729 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:45,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:45,772 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 14:06:45,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:06:45,773 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 14:06:45,784 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 14:06:45,788 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 14:06:45,789 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:06:45,790 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 14:06:45,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:06:45,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-11-18 14:06:45,898 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:45,898 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:45,898 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:45,898 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:45,898 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:06:45,898 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:45,898 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:45,898 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:45,898 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 14:06:45,898 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:45,898 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:45,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:45,947 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:45,947 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:45,950 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:45,951 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:45,969 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:06:45,969 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:46,293 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:06:46,295 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:46,295 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:46,295 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:46,295 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:46,295 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:06:46,295 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:46,295 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:46,295 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:46,295 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 14:06:46,295 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:46,295 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:46,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,327 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:46,327 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:06:46,327 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 [2018-11-18 14:06:46,328 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:46,328 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:46,328 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:46,328 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:46,329 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:46,329 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:46,332 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:46,332 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 [2018-11-18 14:06:46,332 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:46,333 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:46,333 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:46,333 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:46,333 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:46,333 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:46,334 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:46,337 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:06:46,341 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 14:06:46,341 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:06:46,342 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:06:46,342 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:06:46,342 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:06:46,342 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-11-18 14:06:46,342 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:06:46,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:46,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:46,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:46,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 14:06:46,379 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 [2018-11-18 14:06:46,379 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 79 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-11-18 14:06:46,387 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 79 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 121 states and 148 transitions. Complement of second has 6 states. [2018-11-18 14:06:46,388 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 [2018-11-18 14:06:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:06:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-18 14:06:46,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 11 letters. [2018-11-18 14:06:46,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:46,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 22 letters. Loop has 11 letters. [2018-11-18 14:06:46,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:46,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 22 letters. [2018-11-18 14:06:46,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:46,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 148 transitions. [2018-11-18 14:06:46,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 14:06:46,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 77 states and 93 transitions. [2018-11-18 14:06:46,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-18 14:06:46,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-18 14:06:46,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 93 transitions. [2018-11-18 14:06:46,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:06:46,394 INFO L705 BuchiCegarLoop]: Abstraction has 77 states and 93 transitions. [2018-11-18 14:06:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states and 93 transitions. [2018-11-18 14:06:46,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2018-11-18 14:06:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-18 14:06:46,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 86 transitions. [2018-11-18 14:06:46,397 INFO L728 BuchiCegarLoop]: Abstraction has 70 states and 86 transitions. [2018-11-18 14:06:46,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 14:06:46,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-11-18 14:06:46,398 INFO L87 Difference]: Start difference. First operand 70 states and 86 transitions. Second operand 12 states. [2018-11-18 14:06:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:06:46,470 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2018-11-18 14:06:46,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 14:06:46,471 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 148 transitions. [2018-11-18 14:06:46,472 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 14:06:46,474 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 108 states and 132 transitions. [2018-11-18 14:06:46,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 14:06:46,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 14:06:46,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 132 transitions. [2018-11-18 14:06:46,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:06:46,474 INFO L705 BuchiCegarLoop]: Abstraction has 108 states and 132 transitions. [2018-11-18 14:06:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 132 transitions. [2018-11-18 14:06:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 93. [2018-11-18 14:06:46,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-11-18 14:06:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2018-11-18 14:06:46,478 INFO L728 BuchiCegarLoop]: Abstraction has 93 states and 111 transitions. [2018-11-18 14:06:46,479 INFO L608 BuchiCegarLoop]: Abstraction has 93 states and 111 transitions. [2018-11-18 14:06:46,479 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 14:06:46,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 111 transitions. [2018-11-18 14:06:46,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 14:06:46,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:46,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:46,480 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1] [2018-11-18 14:06:46,480 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 14:06:46,480 INFO L794 eck$LassoCheckResult]: Stem: 1170#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1160#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 1161#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 1173#L22-3 assume true; 1174#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1168#L24-3 assume true; 1169#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 1247#L24-3 assume true; 1238#L24-1 assume !(main_~j~0 <= main_~i~0); 1236#L24-4 main_~i~0 := 1 + main_~i~0; 1237#L22-3 assume true; 1191#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1190#L24-3 assume true; 1189#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 1188#L24-3 assume true; 1187#L24-1 assume !(main_~j~0 <= main_~i~0); 1186#L24-4 main_~i~0 := 1 + main_~i~0; 1184#L22-3 assume true; 1179#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1166#L24-3 [2018-11-18 14:06:46,480 INFO L796 eck$LassoCheckResult]: Loop: 1166#L24-3 assume true; 1167#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 1166#L24-3 [2018-11-18 14:06:46,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1221684520, now seen corresponding path program 5 times [2018-11-18 14:06:46,481 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:46,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:46,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:46,482 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:46,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:46,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:46,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1575, now seen corresponding path program 1 times [2018-11-18 14:06:46,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:46,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:46,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:46,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:46,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:46,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:46,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1512752526, now seen corresponding path program 6 times [2018-11-18 14:06:46,495 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:46,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:46,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:46,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:46,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:46,553 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:46,553 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:46,553 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:46,553 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:46,554 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:06:46,554 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:46,554 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:46,554 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:46,554 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration6_Lasso [2018-11-18 14:06:46,554 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:46,554 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:46,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:46,606 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:46,606 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,608 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:46,609 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:46,610 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:46,610 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,626 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:46,626 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:46,627 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:46,627 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:46,643 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:46,645 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:46,645 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,667 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:46,667 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:46,669 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:46,670 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,685 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:46,685 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:46,700 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:46,700 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,703 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:46,703 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:46,705 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:46,705 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,721 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:46,721 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:46,738 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:06:46,738 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:47,083 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:06:47,085 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:47,085 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:47,085 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:47,085 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:47,085 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:06:47,085 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:47,085 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:47,085 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:47,085 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration6_Lasso [2018-11-18 14:06:47,085 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:47,085 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:47,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,139 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:47,139 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:06:47,140 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 [2018-11-18 14:06:47,140 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,140 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:47,140 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,140 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,140 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,141 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:47,141 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:47,141 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:47,142 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 [2018-11-18 14:06:47,142 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,142 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:47,142 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,142 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,142 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,142 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:47,143 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:47,143 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:47,143 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 [2018-11-18 14:06:47,143 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,144 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:47,144 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,144 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,144 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:47,144 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:47,145 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:47,145 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 [2018-11-18 14:06:47,145 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,145 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,145 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,145 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,146 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:47,146 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:47,148 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:47,148 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 [2018-11-18 14:06:47,148 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,148 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:47,148 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,148 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,149 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,149 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:47,149 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:47,149 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:47,150 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 [2018-11-18 14:06:47,150 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,150 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,150 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,150 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,151 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:47,151 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:47,153 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:47,153 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 [2018-11-18 14:06:47,154 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,154 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:47,154 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,154 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,154 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,154 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:47,155 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:47,155 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:47,155 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 [2018-11-18 14:06:47,156 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:47,156 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:47,156 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:47,156 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:47,157 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:47,157 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:47,165 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:06:47,169 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 14:06:47,169 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 14:06:47,169 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:06:47,171 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-18 14:06:47,171 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:06:47,171 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~i~0 - 1*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 2 >= 0] [2018-11-18 14:06:47,175 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 14:06:47,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:47,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:47,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:47,237 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.6 stem predicates 1 loop predicates [2018-11-18 14:06:47,237 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 111 transitions. cyclomatic complexity: 23 Second operand 8 states. [2018-11-18 14:06:47,250 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 111 transitions. cyclomatic complexity: 23. Second operand 8 states. Result 93 states and 111 transitions. Complement of second has 4 states. [2018-11-18 14:06:47,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 2 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-18 14:06:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-18 14:06:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-18 14:06:47,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 19 letters. Loop has 2 letters. [2018-11-18 14:06:47,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:47,251 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:06:47,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:47,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:47,308 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:47,309 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.6 stem predicates 1 loop predicates [2018-11-18 14:06:47,309 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 111 transitions. cyclomatic complexity: 23 Second operand 8 states. [2018-11-18 14:06:47,324 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 111 transitions. cyclomatic complexity: 23. Second operand 8 states. Result 93 states and 111 transitions. Complement of second has 4 states. [2018-11-18 14:06:47,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 2 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-18 14:06:47,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-18 14:06:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-18 14:06:47,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 19 letters. Loop has 2 letters. [2018-11-18 14:06:47,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:47,324 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:06:47,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:47,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:47,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:47,401 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.6 stem predicates 1 loop predicates [2018-11-18 14:06:47,401 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 111 transitions. cyclomatic complexity: 23 Second operand 8 states. [2018-11-18 14:06:47,542 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 111 transitions. cyclomatic complexity: 23. Second operand 8 states. Result 184 states and 214 transitions. Complement of second has 18 states. [2018-11-18 14:06:47,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 8 stem states 1 non-accepting loop states 2 accepting loop states [2018-11-18 14:06:47,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-18 14:06:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 41 transitions. [2018-11-18 14:06:47,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 41 transitions. Stem has 19 letters. Loop has 2 letters. [2018-11-18 14:06:47,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:47,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 41 transitions. Stem has 21 letters. Loop has 2 letters. [2018-11-18 14:06:47,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:47,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 41 transitions. Stem has 19 letters. Loop has 4 letters. [2018-11-18 14:06:47,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:47,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 214 transitions. [2018-11-18 14:06:47,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 14:06:47,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 49 states and 55 transitions. [2018-11-18 14:06:47,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 14:06:47,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-18 14:06:47,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 55 transitions. [2018-11-18 14:06:47,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:06:47,546 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 55 transitions. [2018-11-18 14:06:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 55 transitions. [2018-11-18 14:06:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-11-18 14:06:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 14:06:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-11-18 14:06:47,550 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-11-18 14:06:47,550 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-11-18 14:06:47,550 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 14:06:47,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 51 transitions. [2018-11-18 14:06:47,551 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-18 14:06:47,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:06:47,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:06:47,551 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 3, 2, 2, 1, 1, 1] [2018-11-18 14:06:47,551 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 14:06:47,552 INFO L794 eck$LassoCheckResult]: Stem: 1900#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1892#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 1893#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 1906#L22-3 assume true; 1914#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1913#L24-3 assume true; 1912#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 1911#L24-3 assume true; 1910#L24-1 assume !(main_~j~0 <= main_~i~0); 1907#L24-4 main_~i~0 := 1 + main_~i~0; 1902#L22-3 assume true; 1903#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1936#L24-3 assume true; 1934#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 1932#L24-3 assume true; 1930#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 1929#L24-3 assume true; 1928#L24-1 assume !(main_~j~0 <= main_~i~0); 1919#L24-4 main_~i~0 := 1 + main_~i~0; 1925#L22-3 assume true; 1894#L22-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 1895#L24-3 [2018-11-18 14:06:47,552 INFO L796 eck$LassoCheckResult]: Loop: 1895#L24-3 assume true; 1898#L24-1 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 1895#L24-3 [2018-11-18 14:06:47,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:47,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1561205826, now seen corresponding path program 7 times [2018-11-18 14:06:47,552 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:47,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:47,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:47,552 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:47,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:47,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:47,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1575, now seen corresponding path program 2 times [2018-11-18 14:06:47,563 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:47,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:47,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:47,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:06:47,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:47,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:47,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1375213096, now seen corresponding path program 8 times [2018-11-18 14:06:47,566 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:06:47,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:06:47,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:47,567 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:06:47,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:06:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:06:47,622 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:47,622 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:47,622 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:47,622 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:47,622 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:06:47,622 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:47,622 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:47,622 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:47,622 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration7_Lasso [2018-11-18 14:06:47,622 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:47,622 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:47,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:47,679 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:47,679 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:47,681 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:47,681 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:47,683 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:06:47,683 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_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:47,698 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:06:47,698 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd5c207e-3122-4f79-b5b4-ec3fb205d02f/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 [2018-11-18 14:06:47,716 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:06:47,716 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:06:48,228 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:06:48,230 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:06:48,230 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:06:48,230 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:06:48,230 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:06:48,230 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:06:48,230 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:06:48,231 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:06:48,231 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:06:48,231 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a_true-termination_true-no-overflow.c_Iteration7_Lasso [2018-11-18 14:06:48,231 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:06:48,231 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:06:48,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,242 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:06:48,290 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:06:48,290 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:06:48,291 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 [2018-11-18 14:06:48,291 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:48,291 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:48,291 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:48,291 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:48,291 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:48,292 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:48,292 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:48,292 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:48,292 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 [2018-11-18 14:06:48,293 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:48,293 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:06:48,293 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:48,293 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:48,293 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:48,293 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:06:48,293 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:06:48,294 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:06:48,294 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 [2018-11-18 14:06:48,294 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:06:48,294 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:06:48,294 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:06:48,294 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:06:48,297 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:06:48,297 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:06:48,307 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:06:48,312 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-18 14:06:48,312 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 14:06:48,313 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:06:48,313 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-18 14:06:48,313 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:06:48,313 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2018-11-18 14:06:48,316 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-18 14:06:48,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:48,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:48,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:48,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:48,344 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 [2018-11-18 14:06:48,344 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 51 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-18 14:06:48,370 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 51 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 48 states and 54 transitions. Complement of second has 6 states. [2018-11-18 14:06:48,370 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 [2018-11-18 14:06:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:06:48,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 14:06:48,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 21 letters. Loop has 2 letters. [2018-11-18 14:06:48,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:48,371 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:06:48,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:48,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:48,400 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:48,401 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 [2018-11-18 14:06:48,401 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 51 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-18 14:06:48,416 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 51 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 48 states and 54 transitions. Complement of second has 6 states. [2018-11-18 14:06:48,417 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 [2018-11-18 14:06:48,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:06:48,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-18 14:06:48,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 21 letters. Loop has 2 letters. [2018-11-18 14:06:48,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:48,418 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:06:48,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:06:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:48,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:06:48,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:06:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:06:48,451 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 [2018-11-18 14:06:48,451 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 51 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-18 14:06:48,469 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 51 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 64 states and 72 transitions. Complement of second has 5 states. [2018-11-18 14:06:48,470 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 [2018-11-18 14:06:48,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:06:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 14:06:48,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 21 letters. Loop has 2 letters. [2018-11-18 14:06:48,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:48,471 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 23 letters. Loop has 2 letters. [2018-11-18 14:06:48,471 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:48,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 21 letters. Loop has 4 letters. [2018-11-18 14:06:48,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:06:48,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 72 transitions. [2018-11-18 14:06:48,473 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 14:06:48,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 0 states and 0 transitions. [2018-11-18 14:06:48,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 14:06:48,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 14:06:48,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 14:06:48,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 14:06:48,473 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:06:48,473 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:06:48,473 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:06:48,474 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 14:06:48,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 14:06:48,474 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 14:06:48,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 14:06:48,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 02:06:48 BoogieIcfgContainer [2018-11-18 14:06:48,487 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 14:06:48,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:06:48,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:06:48,488 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:06:48,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:06:43" (3/4) ... [2018-11-18 14:06:48,491 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 14:06:48,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:06:48,492 INFO L168 Benchmark]: Toolchain (without parser) took 5198.35 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 233.3 MB). Free memory was 959.2 MB in the beginning and 868.2 MB in the end (delta: 91.1 MB). Peak memory consumption was 324.4 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:48,493 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:06:48,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.66 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:48,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:48,494 INFO L168 Benchmark]: Boogie Preprocessor took 11.02 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:06:48,495 INFO L168 Benchmark]: RCFGBuilder took 156.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -207.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:48,495 INFO L168 Benchmark]: BuchiAutomizer took 4867.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 64.0 MB). Free memory was 1.2 GB in the beginning and 868.2 MB in the end (delta: 285.3 MB). Peak memory consumption was 349.2 MB. Max. memory is 11.5 GB. [2018-11-18 14:06:48,495 INFO L168 Benchmark]: Witness Printer took 3.77 ms. Allocated memory is still 1.3 GB. Free memory is still 868.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:06:48,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.66 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 17.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.02 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 156.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 169.3 MB). Free memory was 945.8 MB in the beginning and 1.2 GB in the end (delta: -207.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4867.43 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 64.0 MB). Free memory was 1.2 GB in the beginning and 868.2 MB in the end (delta: 285.3 MB). Peak memory consumption was 349.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.77 ms. Allocated memory is still 1.3 GB. Free memory is still 868.2 MB. There was no memory consumed. 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 10 terminating modules (4 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 5 locations. One deterministic module has affine ranking function k + -1 * i and consists of 6 locations. One deterministic module has affine ranking function -1 * i + 2 * k and consists of 7 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function i + -1 * j + 1 and consists of 11 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. 4 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.8s and 8 iterations. TraceHistogramMax:5. Analysis of lassos took 3.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 42 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 93 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/20 HoareTripleCheckerStatistics: 102 SDtfs, 136 SDslu, 139 SDs, 0 SdLazy, 294 SolverSat, 69 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax156 hnf97 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf92 smp100 dnf100 smp100 tf104 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...