./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 0455ba49274114922cfe1b7739d9cb0a89e6c868 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:52:17,440 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:52:17,441 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:52:17,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:52:17,447 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:52:17,448 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:52:17,449 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:52:17,450 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:52:17,451 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:52:17,451 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:52:17,452 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:52:17,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:52:17,453 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:52:17,453 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:52:17,454 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:52:17,454 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:52:17,455 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:52:17,456 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:52:17,457 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:52:17,458 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:52:17,459 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:52:17,460 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:52:17,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:52:17,461 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:52:17,461 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:52:17,462 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:52:17,463 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:52:17,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:52:17,463 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:52:17,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:52:17,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:52:17,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:52:17,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:52:17,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:52:17,466 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:52:17,466 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:52:17,467 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 11:52:17,474 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:52:17,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:52:17,475 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:52:17,475 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:52:17,475 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:52:17,478 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 11:52:17,478 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 11:52:17,478 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 11:52:17,478 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 11:52:17,478 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 11:52:17,478 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 11:52:17,478 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:52:17,479 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 11:52:17,480 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 11:52:17,480 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:52:17,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:52:17,481 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 11:52:17,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:52:17,481 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:52:17,481 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 11:52:17,481 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 11:52:17,482 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_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 -> 0455ba49274114922cfe1b7739d9cb0a89e6c868 [2018-11-10 11:52:17,502 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:52:17,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:52:17,512 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:52:17,513 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:52:17,513 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:52:17,514 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-10 11:52:17,548 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/data/a81163269/06a8fae119ec4cfa98f0e95160e12f65/FLAG2260ec981 [2018-11-10 11:52:17,951 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:52:17,951 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-10 11:52:17,955 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/data/a81163269/06a8fae119ec4cfa98f0e95160e12f65/FLAG2260ec981 [2018-11-10 11:52:17,965 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/data/a81163269/06a8fae119ec4cfa98f0e95160e12f65 [2018-11-10 11:52:17,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:52:17,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 11:52:17,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:52:17,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:52:17,973 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:52:17,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:52:17" (1/1) ... [2018-11-10 11:52:17,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32089edc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:17, skipping insertion in model container [2018-11-10 11:52:17,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:52:17" (1/1) ... [2018-11-10 11:52:17,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:52:17,997 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:52:18,097 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:52:18,099 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:52:18,107 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:52:18,115 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:52:18,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18 WrapperNode [2018-11-10 11:52:18,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:52:18,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 11:52:18,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 11:52:18,116 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 11:52:18,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 11:52:18,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:52:18,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:52:18,133 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:52:18,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,139 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... [2018-11-10 11:52:18,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:52:18,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:52:18,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:52:18,142 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:52:18,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:18,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:52:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:52:18,285 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:52:18,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:52:18 BoogieIcfgContainer [2018-11-10 11:52:18,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:52:18,286 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 11:52:18,286 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 11:52:18,288 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 11:52:18,289 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 11:52:18,289 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 11:52:17" (1/3) ... [2018-11-10 11:52:18,290 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@178581f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:52:18, skipping insertion in model container [2018-11-10 11:52:18,290 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 11:52:18,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:52:18" (2/3) ... [2018-11-10 11:52:18,290 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@178581f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:52:18, skipping insertion in model container [2018-11-10 11:52:18,290 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 11:52:18,290 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:52:18" (3/3) ... [2018-11-10 11:52:18,292 INFO L375 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c [2018-11-10 11:52:18,333 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:52:18,333 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 11:52:18,334 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 11:52:18,334 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 11:52:18,334 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:52:18,334 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:52:18,334 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 11:52:18,334 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:52:18,334 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 11:52:18,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 11:52:18,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:18,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:52:18,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:52:18,360 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 11:52:18,361 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:52:18,361 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 11:52:18,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-10 11:52:18,361 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:18,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:52:18,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:52:18,362 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 11:52:18,362 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:52:18,366 INFO L793 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 4#L18-3true [2018-11-10 11:52:18,366 INFO L795 eck$LassoCheckResult]: Loop: 4#L18-3true assume true; 7#L18-1true assume !!(main_~y~0 >= 0); 10#L19true assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 8#L19-2true main_~x~0 := main_~x~0 + 1; 4#L18-3true [2018-11-10 11:52:18,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 11:52:18,371 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:18,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:18,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:18,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:18,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:18,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1114345, now seen corresponding path program 1 times [2018-11-10 11:52:18,428 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:18,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:18,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:18,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:18,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:18,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:18,436 INFO L82 PathProgramCache]: Analyzing trace with hash 889541547, now seen corresponding path program 1 times [2018-11-10 11:52:18,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:18,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:18,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:18,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:18,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:18,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:52:18,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 11:52:18,531 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:18,532 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:18,532 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:18,532 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:18,532 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:52:18,532 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:18,532 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:18,532 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:18,533 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2018-11-10 11:52:18,533 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:18,533 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:18,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,638 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:18,638 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:18,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:18,643 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:18,676 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:52:18,676 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:18,684 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:18,685 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=51} Honda state: {ULTIMATE.start_main_~x~0=51} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 0, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:18,700 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:18,700 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:18,716 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:18,716 INFO L446 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_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:18,719 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:18,719 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:18,735 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:18,735 INFO L446 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_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:18,738 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:18,738 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:18,756 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:52:18,756 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:18,777 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:52:18,778 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:18,778 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:18,779 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:18,779 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:18,779 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:52:18,779 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:18,779 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:18,779 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:18,779 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration1_Loop [2018-11-10 11:52:18,779 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:18,779 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:18,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:18,866 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:18,869 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:52:18,870 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 [2018-11-10 11:52:18,871 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:18,871 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:52:18,872 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:18,872 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:18,872 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:18,873 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:52:18,873 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:52:18,879 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:18,880 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 [2018-11-10 11:52:18,880 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:18,880 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:18,880 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:18,881 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:18,882 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:52:18,883 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:52:18,887 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:18,887 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 [2018-11-10 11:52:18,888 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:18,888 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:18,888 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:18,888 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:18,890 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:52:18,890 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:52:18,897 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:18,898 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 [2018-11-10 11:52:18,898 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:18,898 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:52:18,898 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:18,898 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:18,899 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:18,899 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:52:18,899 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:52:18,903 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:52:18,906 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:52:18,906 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 11:52:18,908 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:52:18,908 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:52:18,908 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:52:18,908 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-10 11:52:18,909 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:52:18,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:18,947 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:18,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,012 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 [2018-11-10 11:52:19,013 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 5 states. [2018-11-10 11:52:19,047 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 5 states. Result 31 states and 37 transitions. Complement of second has 8 states. [2018-11-10 11:52:19,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:52:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 11:52:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2018-11-10 11:52:19,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-10 11:52:19,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-10 11:52:19,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-10 11:52:19,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2018-11-10 11:52:19,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:19,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 15 states and 18 transitions. [2018-11-10 11:52:19,059 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-10 11:52:19,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-10 11:52:19,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2018-11-10 11:52:19,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:52:19,061 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-11-10 11:52:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2018-11-10 11:52:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-11-10 11:52:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 11:52:19,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2018-11-10 11:52:19,081 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2018-11-10 11:52:19,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 11:52:19,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 11:52:19,083 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 3 states. [2018-11-10 11:52:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:52:19,090 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-11-10 11:52:19,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 11:52:19,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2018-11-10 11:52:19,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:19,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 11 transitions. [2018-11-10 11:52:19,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-10 11:52:19,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-10 11:52:19,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2018-11-10 11:52:19,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 11:52:19,092 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-11-10 11:52:19,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2018-11-10 11:52:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-11-10 11:52:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-10 11:52:19,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-10 11:52:19,093 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-10 11:52:19,093 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-10 11:52:19,093 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 11:52:19,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-10 11:52:19,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:19,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:52:19,093 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:52:19,094 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 11:52:19,094 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:52:19,094 INFO L793 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 115#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 116#L18-3 assume true; 117#L18-1 assume !!(main_~y~0 >= 0); 119#L19 assume main_~x~0 <= 50;main_~y~0 := main_~y~0 + 1; 120#L19-2 [2018-11-10 11:52:19,094 INFO L795 eck$LassoCheckResult]: Loop: 120#L19-2 main_~x~0 := main_~x~0 + 1; 121#L18-3 assume true; 123#L18-1 assume !!(main_~y~0 >= 0); 122#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 120#L19-2 [2018-11-10 11:52:19,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,094 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-10 11:52:19,094 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:19,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1495705, now seen corresponding path program 2 times [2018-11-10 11:52:19,101 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:19,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,105 INFO L82 PathProgramCache]: Analyzing trace with hash 382169470, now seen corresponding path program 1 times [2018-11-10 11:52:19,105 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,105 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:52:19,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:52:19,118 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:52:19,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,144 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:52:19,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-10 11:52:19,154 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:19,154 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:19,154 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:19,154 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:19,154 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:52:19,154 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:19,154 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:19,154 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:19,154 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2018-11-10 11:52:19,154 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:19,154 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:19,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,222 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:19,222 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,231 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:19,231 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:19,258 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:19,258 INFO L446 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_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:19,261 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:19,261 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:19,277 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:19,277 INFO L446 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_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,279 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:19,280 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,298 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:52:19,298 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:19,309 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:19,309 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=50} Honda state: {ULTIMATE.start_main_~x~0=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 15, 8] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,326 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:19,326 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:19,352 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:52:19,353 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:19,379 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:52:19,380 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:19,380 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:19,380 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:19,380 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:19,380 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:52:19,380 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:19,380 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:19,380 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:19,381 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration2_Loop [2018-11-10 11:52:19,381 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:19,381 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:19,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,445 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:19,445 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:52:19,446 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 [2018-11-10 11:52:19,446 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:19,447 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:19,447 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:19,447 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:19,448 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:52:19,448 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:52:19,452 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:19,452 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 [2018-11-10 11:52:19,453 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:19,453 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:19,453 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:19,453 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:19,455 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:52:19,455 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:52:19,461 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:19,461 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 [2018-11-10 11:52:19,462 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:19,462 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:52:19,462 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:19,462 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:19,462 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:19,463 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:52:19,463 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:52:19,466 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:19,466 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 [2018-11-10 11:52:19,467 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:19,467 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:52:19,467 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:19,467 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:19,467 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:19,468 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:52:19,468 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:52:19,471 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:52:19,473 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:52:19,473 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 11:52:19,473 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:52:19,473 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:52:19,473 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:52:19,474 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-10 11:52:19,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:52:19,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,505 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 11:52:19,506 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-10 11:52:19,516 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 17 states and 20 transitions. Complement of second has 7 states. [2018-11-10 11:52:19,517 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 [2018-11-10 11:52:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:52:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-10 11:52:19,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-10 11:52:19,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 11:52:19,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-10 11:52:19,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,518 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 20 transitions. [2018-11-10 11:52:19,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:19,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 20 transitions. [2018-11-10 11:52:19,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-10 11:52:19,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-10 11:52:19,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2018-11-10 11:52:19,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:52:19,520 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-10 11:52:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2018-11-10 11:52:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 11:52:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 11:52:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-10 11:52:19,521 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-10 11:52:19,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 11:52:19,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 11:52:19,522 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2018-11-10 11:52:19,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:52:19,531 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-11-10 11:52:19,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 11:52:19,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 18 transitions. [2018-11-10 11:52:19,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:19,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 15 transitions. [2018-11-10 11:52:19,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-10 11:52:19,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-10 11:52:19,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2018-11-10 11:52:19,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 11:52:19,533 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-10 11:52:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2018-11-10 11:52:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-10 11:52:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-10 11:52:19,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-10 11:52:19,535 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-10 11:52:19,535 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-10 11:52:19,535 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 11:52:19,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2018-11-10 11:52:19,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:52:19,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:52:19,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:52:19,537 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2018-11-10 11:52:19,537 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:52:19,537 INFO L793 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 253#L18-3 assume true; 264#L18-1 assume !!(main_~y~0 >= 0); 263#L19 assume main_~x~0 <= 50;main_~y~0 := main_~y~0 + 1; 258#L19-2 main_~x~0 := main_~x~0 + 1; 254#L18-3 assume true; 255#L18-1 assume !!(main_~y~0 >= 0); 257#L19 assume main_~x~0 <= 50;main_~y~0 := main_~y~0 + 1; 259#L19-2 [2018-11-10 11:52:19,537 INFO L795 eck$LassoCheckResult]: Loop: 259#L19-2 main_~x~0 := main_~x~0 + 1; 262#L18-3 assume true; 261#L18-1 assume !!(main_~y~0 >= 0); 260#L19 assume !(main_~x~0 <= 50);main_~y~0 := main_~y~0 - 1; 259#L19-2 [2018-11-10 11:52:19,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,538 INFO L82 PathProgramCache]: Analyzing trace with hash 382169468, now seen corresponding path program 1 times [2018-11-10 11:52:19,538 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:19,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1495705, now seen corresponding path program 3 times [2018-11-10 11:52:19,545 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:19,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1702687084, now seen corresponding path program 2 times [2018-11-10 11:52:19,549 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:52:19,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,569 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 11:52:19,569 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 11:52:19,575 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 11:52:19,580 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 11:52:19,580 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 11:52:19,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 11:52:19,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-10 11:52:19,620 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:19,620 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:19,620 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:19,620 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:19,620 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:52:19,620 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:19,621 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:19,621 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:19,621 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2018-11-10 11:52:19,621 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:19,621 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:19,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,667 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:19,667 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,669 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:19,669 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:19,687 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:19,687 INFO L446 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_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,690 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:19,690 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:19,708 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:19,708 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,710 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:19,710 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:19,727 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:52:19,727 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:19,744 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:52:19,745 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:19,745 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:19,745 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:19,745 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:19,746 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:52:19,746 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:19,746 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:19,746 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:19,746 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration3_Loop [2018-11-10 11:52:19,746 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:19,746 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:19,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,780 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:19,782 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:52:19,782 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 [2018-11-10 11:52:19,783 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:19,783 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:19,783 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:19,783 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:19,784 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:52:19,784 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:52:19,787 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:19,787 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 [2018-11-10 11:52:19,787 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:19,787 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:19,788 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:19,788 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:19,789 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:52:19,789 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:52:19,791 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:19,791 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 [2018-11-10 11:52:19,792 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:19,792 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:52:19,792 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:19,792 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:19,792 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:19,792 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:52:19,793 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:52:19,795 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:52:19,796 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:52:19,797 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 11:52:19,797 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:52:19,797 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:52:19,797 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:52:19,797 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-10 11:52:19,798 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:52:19,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,827 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 11:52:19,827 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-10 11:52:19,834 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 16 states and 17 transitions. Complement of second has 7 states. [2018-11-10 11:52:19,834 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 [2018-11-10 11:52:19,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:52:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-10 11:52:19,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 11:52:19,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,835 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 11:52:19,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,868 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 11:52:19,868 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-10 11:52:19,873 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 16 states and 17 transitions. Complement of second has 7 states. [2018-11-10 11:52:19,874 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 [2018-11-10 11:52:19,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:52:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-10 11:52:19,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 11:52:19,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,874 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 11:52:19,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:19,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:19,899 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 11:52:19,899 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-11-10 11:52:19,908 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 20 states and 22 transitions. Complement of second has 6 states. [2018-11-10 11:52:19,908 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 [2018-11-10 11:52:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:52:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 11:52:19,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 11:52:19,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-10 11:52:19,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-10 11:52:19,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:19,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2018-11-10 11:52:19,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-10 11:52:19,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 19 transitions. [2018-11-10 11:52:19,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 11:52:19,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-10 11:52:19,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2018-11-10 11:52:19,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:52:19,912 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-10 11:52:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2018-11-10 11:52:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-11-10 11:52:19,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-10 11:52:19,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-11-10 11:52:19,913 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-10 11:52:19,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 11:52:19,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 11:52:19,913 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2018-11-10 11:52:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:52:19,938 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-11-10 11:52:19,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 11:52:19,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2018-11-10 11:52:19,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-10 11:52:19,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 25 transitions. [2018-11-10 11:52:19,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-10 11:52:19,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-10 11:52:19,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2018-11-10 11:52:19,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:52:19,940 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-10 11:52:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2018-11-10 11:52:19,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-10 11:52:19,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 11:52:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-10 11:52:19,942 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-10 11:52:19,942 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-10 11:52:19,942 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 11:52:19,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 20 transitions. [2018-11-10 11:52:19,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-10 11:52:19,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:52:19,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:52:19,942 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2018-11-10 11:52:19,942 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:52:19,943 INFO L793 eck$LassoCheckResult]: Stem: 559#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 557#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 558#L18-3 assume true; 567#L18-1 assume !!(main_~y~0 >= 0); 565#L19 assume main_~x~0 <= 50;main_~y~0 := main_~y~0 + 1; 566#L19-2 main_~x~0 := main_~x~0 + 1; 568#L18-3 assume true; 570#L18-1 assume !!(main_~y~0 >= 0); 569#L19 assume main_~x~0 <= 50;main_~y~0 := main_~y~0 + 1; 560#L19-2 main_~x~0 := main_~x~0 + 1; 553#L18-3 [2018-11-10 11:52:19,943 INFO L795 eck$LassoCheckResult]: Loop: 553#L18-3 assume true; 554#L18-1 assume !!(main_~y~0 >= 0); 562#L19 assume main_~x~0 <= 50;main_~y~0 := main_~y~0 + 1; 564#L19-2 main_~x~0 := main_~x~0 + 1; 553#L18-3 [2018-11-10 11:52:19,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1037648361, now seen corresponding path program 2 times [2018-11-10 11:52:19,943 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,943 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,944 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:52:19,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1114283, now seen corresponding path program 1 times [2018-11-10 11:52:19,949 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:52:19,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:19,953 INFO L82 PathProgramCache]: Analyzing trace with hash -1243692095, now seen corresponding path program 3 times [2018-11-10 11:52:19,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:52:19,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:52:19,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:52:19,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:52:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:52:19,971 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:19,971 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:19,971 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:19,971 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:19,971 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:52:19,971 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:19,971 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:19,971 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:19,971 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration4_Loop [2018-11-10 11:52:19,971 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:19,971 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:19,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:19,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:20,015 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:20,015 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:20,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:20,017 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:20,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:52:20,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:20,039 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:20,039 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0} Honda state: {ULTIMATE.start_main_~y~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=1}, {ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=0}] Lambdas: [1, 0, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:20,055 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:20,055 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:20,071 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:52:20,071 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:20,074 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:52:20,074 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7cb701a4-9923-4d9c-b296-a0c0d5695d73/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 [2018-11-10 11:52:20,091 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:52:20,091 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:52:20,108 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:52:20,109 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:52:20,109 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:52:20,109 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:52:20,110 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:52:20,110 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:52:20,110 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:52:20,110 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:52:20,110 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:52:20,110 INFO L131 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a_true-termination_true-no-overflow.c.c_Iteration4_Loop [2018-11-10 11:52:20,110 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:52:20,110 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:52:20,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:20,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:20,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:20,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:52:20,154 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:52:20,154 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:52:20,155 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 [2018-11-10 11:52:20,155 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:20,155 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:52:20,156 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:20,156 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:20,156 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:20,156 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:52:20,156 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:52:20,158 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:20,158 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 [2018-11-10 11:52:20,159 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:20,159 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:20,159 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:20,159 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:20,160 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:52:20,160 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:52:20,163 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:52:20,163 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 [2018-11-10 11:52:20,164 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:52:20,164 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:52:20,166 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:52:20,166 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:52:20,166 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:52:20,166 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:52:20,166 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:52:20,169 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:52:20,170 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:52:20,170 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 11:52:20,171 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:52:20,171 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:52:20,171 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:52:20,171 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 101 Supporting invariants [] [2018-11-10 11:52:20,171 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:52:20,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:52:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:20,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:52:20,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:52:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:52:20,205 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 11:52:20,205 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 20 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-10 11:52:20,213 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 20 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 33 states and 37 transitions. Complement of second has 6 states. [2018-11-10 11:52:20,214 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 [2018-11-10 11:52:20,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:52:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 11:52:20,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-10 11:52:20,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:20,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-10 11:52:20,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:20,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-10 11:52:20,215 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:52:20,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 37 transitions. [2018-11-10 11:52:20,215 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 11:52:20,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2018-11-10 11:52:20,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 11:52:20,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 11:52:20,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 11:52:20,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 11:52:20,216 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:52:20,216 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:52:20,216 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:52:20,216 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 11:52:20,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 11:52:20,216 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 11:52:20,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 11:52:20,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 11:52:20 BoogieIcfgContainer [2018-11-10 11:52:20,221 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 11:52:20,222 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:52:20,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:52:20,222 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:52:20,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:52:18" (3/4) ... [2018-11-10 11:52:20,224 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 11:52:20,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:52:20,225 INFO L168 Benchmark]: Toolchain (without parser) took 2256.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -111.3 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-11-10 11:52:20,226 INFO L168 Benchmark]: CDTParser took 0.12 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. [2018-11-10 11:52:20,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 145.30 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 11:52:20,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.99 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:52:20,227 INFO L168 Benchmark]: Boogie Preprocessor took 9.45 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:52:20,227 INFO L168 Benchmark]: RCFGBuilder took 143.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:52:20,228 INFO L168 Benchmark]: BuchiAutomizer took 1935.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:52:20,228 INFO L168 Benchmark]: Witness Printer took 2.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:52:20,230 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 145.30 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.99 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.45 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 143.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1935.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.89 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 101 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 60 SDtfs, 50 SDslu, 46 SDs, 0 SdLazy, 65 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf97 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...