./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/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 1a5ad591ce856c2d846b6a372eee9518c32c9e01 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 15:34:28,310 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:34:28,311 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:34:28,319 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:34:28,319 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:34:28,320 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:34:28,320 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:34:28,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:34:28,323 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:34:28,323 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:34:28,324 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:34:28,324 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:34:28,324 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:34:28,325 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:34:28,326 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:34:28,326 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:34:28,327 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:34:28,328 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:34:28,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:34:28,330 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:34:28,331 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:34:28,332 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:34:28,333 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:34:28,333 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:34:28,333 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:34:28,334 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:34:28,335 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:34:28,335 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:34:28,336 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:34:28,336 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:34:28,337 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:34:28,337 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:34:28,337 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:34:28,337 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:34:28,338 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:34:28,338 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:34:28,339 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 15:34:28,349 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:34:28,349 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:34:28,350 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:34:28,350 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:34:28,350 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:34:28,350 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 15:34:28,350 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 15:34:28,351 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 15:34:28,351 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 15:34:28,351 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 15:34:28,351 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 15:34:28,351 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:34:28,351 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 15:34:28,351 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:34:28,351 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 15:34:28,352 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:34:28,352 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:34:28,353 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 15:34:28,353 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:34:28,353 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:34:28,353 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 15:34:28,354 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 15:34:28,354 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_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/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 -> 1a5ad591ce856c2d846b6a372eee9518c32c9e01 [2018-11-23 15:34:28,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:34:28,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:34:28,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:34:28,389 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:34:28,390 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:34:28,390 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c [2018-11-23 15:34:28,434 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/data/5040a74c0/b5f4004b431b44c790e89ad1f61ad633/FLAG360c2a2e0 [2018-11-23 15:34:28,824 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:34:28,825 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/sv-benchmarks/c/termination-restricted-15/PastaA1_true-termination_true-no-overflow.c [2018-11-23 15:34:28,828 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/data/5040a74c0/b5f4004b431b44c790e89ad1f61ad633/FLAG360c2a2e0 [2018-11-23 15:34:28,836 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/data/5040a74c0/b5f4004b431b44c790e89ad1f61ad633 [2018-11-23 15:34:28,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:34:28,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:34:28,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:34:28,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:34:28,843 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:34:28,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:28" (1/1) ... [2018-11-23 15:34:28,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@457f80a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:28, skipping insertion in model container [2018-11-23 15:34:28,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:28" (1/1) ... [2018-11-23 15:34:28,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:34:28,865 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:34:28,986 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:34:28,988 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:34:28,996 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:34:29,004 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:34:29,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29 WrapperNode [2018-11-23 15:34:29,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:34:29,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:34:29,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:34:29,005 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:34:29,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:34:29,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:34:29,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:34:29,024 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:34:29,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... [2018-11-23 15:34:29,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:34:29,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:34:29,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:34:29,035 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:34:29,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:34:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:34:29,175 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:34:29,175 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 15:34:29,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:29 BoogieIcfgContainer [2018-11-23 15:34:29,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:34:29,176 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 15:34:29,176 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 15:34:29,179 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 15:34:29,180 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:34:29,180 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 03:34:28" (1/3) ... [2018-11-23 15:34:29,181 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c2bf26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:34:29, skipping insertion in model container [2018-11-23 15:34:29,181 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:34:29,181 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:29" (2/3) ... [2018-11-23 15:34:29,181 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c2bf26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:34:29, skipping insertion in model container [2018-11-23 15:34:29,181 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:34:29,182 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:29" (3/3) ... [2018-11-23 15:34:29,183 INFO L375 chiAutomizerObserver]: Analyzing ICFG PastaA1_true-termination_true-no-overflow.c [2018-11-23 15:34:29,218 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:34:29,219 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 15:34:29,219 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 15:34:29,219 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 15:34:29,219 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:34:29,219 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:34:29,219 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 15:34:29,220 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:34:29,220 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 15:34:29,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 15:34:29,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:34:29,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:34:29,240 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:34:29,244 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 15:34:29,244 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:34:29,244 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 15:34:29,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-23 15:34:29,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 15:34:29,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:34:29,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:34:29,245 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 15:34:29,245 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:34:29,250 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L10-2true [2018-11-23 15:34:29,250 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~x~0 > 0);main_~y~0 := 0; 3#L12-2true assume !(main_~y~0 < main_~x~0); 10#L12-3true main_~x~0 := main_~x~0 - 1; 8#L10-2true [2018-11-23 15:34:29,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,253 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 15:34:29,255 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,255 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:29,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,316 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-23 15:34:29,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:29,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:34:29,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:34:29,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 15:34:29,369 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-23 15:34:29,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 15:34:29,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 15:34:29,380 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2018-11-23 15:34:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:34:29,391 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-11-23 15:34:29,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 15:34:29,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-11-23 15:34:29,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 15:34:29,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2018-11-23 15:34:29,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 15:34:29,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 15:34:29,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2018-11-23 15:34:29,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 15:34:29,397 INFO L705 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-11-23 15:34:29,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2018-11-23 15:34:29,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-11-23 15:34:29,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 15:34:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2018-11-23 15:34:29,417 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-11-23 15:34:29,417 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2018-11-23 15:34:29,417 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 15:34:29,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2018-11-23 15:34:29,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 15:34:29,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:34:29,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:34:29,418 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 15:34:29,418 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-23 15:34:29,418 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 29#L10-2 [2018-11-23 15:34:29,418 INFO L796 eck$LassoCheckResult]: Loop: 29#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 26#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 27#L12-2 assume !(main_~y~0 < main_~x~0); 30#L12-3 main_~x~0 := main_~x~0 - 1; 29#L10-2 [2018-11-23 15:34:29,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,419 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-23 15:34:29,419 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:29,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2018-11-23 15:34:29,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,424 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:34:29,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,433 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2018-11-23 15:34:29,433 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:29,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,511 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:34:29,512 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:34:29,512 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:34:29,512 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:34:29,512 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:34:29,513 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,513 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:34:29,513 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:34:29,513 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 15:34:29,513 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:34:29,513 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:34:29,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,634 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:34:29,634 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,639 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:34:29,639 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:34:29,658 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:34:29,658 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:34:29,664 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:34:29,679 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:34:29,679 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,682 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:34:29,682 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,700 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:34:29,700 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:34:29,719 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:34:29,720 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:34:29,720 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:34:29,720 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:34:29,720 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:34:29,720 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:34:29,720 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,720 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:34:29,720 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:34:29,720 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 15:34:29,720 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:34:29,720 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:34:29,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,777 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:34:29,780 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:34:29,781 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:34:29,782 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:34:29,782 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:34:29,782 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:34:29,783 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:34:29,785 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:34:29,785 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:34:29,790 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:34:29,790 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:34:29,791 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:34:29,791 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:34:29,791 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:34:29,791 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:34:29,793 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:34:29,793 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:34:29,799 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:34:29,799 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:34:29,800 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:34:29,800 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:34:29,800 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:34:29,801 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:34:29,801 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:34:29,801 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:34:29,802 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:34:29,807 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:34:29,810 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:34:29,810 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:34:29,812 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:34:29,812 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:34:29,812 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:34:29,813 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 15:34:29,813 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:34:29,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:29,840 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:29,847 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 15:34:29,875 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 [2018-11-23 15:34:29,875 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-23 15:34:29,896 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 9 states and 12 transitions. Complement of second has 4 states. [2018-11-23 15:34:29,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 15:34:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 15:34:29,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 15:34:29,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 15:34:29,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:29,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-23 15:34:29,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:29,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 8 letters. [2018-11-23 15:34:29,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:29,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2018-11-23 15:34:29,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 15:34:29,900 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 11 transitions. [2018-11-23 15:34:29,900 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 15:34:29,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 15:34:29,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-11-23 15:34:29,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:34:29,901 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-23 15:34:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-11-23 15:34:29,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-23 15:34:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 15:34:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-23 15:34:29,902 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 15:34:29,902 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 15:34:29,902 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 15:34:29,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-23 15:34:29,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 15:34:29,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:34:29,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:34:29,903 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 15:34:29,903 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 15:34:29,903 INFO L794 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 79#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 75#L12-2 [2018-11-23 15:34:29,903 INFO L796 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 75#L12-2 [2018-11-23 15:34:29,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-23 15:34:29,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:29,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,908 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-23 15:34:29,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:29,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:29,911 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-23 15:34:29,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:29,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:29,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,912 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:29,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:29,927 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:34:29,927 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:34:29,927 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:34:29,927 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:34:29,927 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:34:29,927 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,927 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:34:29,927 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:34:29,927 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 15:34:29,928 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:34:29,928 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:34:29,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:29,967 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:34:29,967 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,968 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:34:29,969 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:34:29,983 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:34:29,983 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:29,986 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:34:29,986 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:34:30,000 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:34:30,000 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:30,003 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:34:30,003 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:30,019 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:34:30,019 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:34:30,108 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:34:30,109 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:34:30,109 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:34:30,109 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:34:30,109 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:34:30,109 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:34:30,110 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:30,110 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:34:30,110 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:34:30,110 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 15:34:30,110 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:34:30,110 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:34:30,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,175 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:34:30,175 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:34:30,176 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:34:30,177 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:34:30,177 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:34:30,177 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:34:30,177 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:34:30,178 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:34:30,179 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:34:30,182 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:34:30,183 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:34:30,183 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:34:30,183 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:34:30,183 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:34:30,184 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:34:30,185 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 15:34:30,185 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 15:34:30,189 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:34:30,189 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:34:30,190 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:34:30,190 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:34:30,190 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:34:30,190 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:34:30,190 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:34:30,191 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:34:30,191 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:34:30,195 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:34:30,198 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:34:30,198 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:34:30,198 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:34:30,199 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:34:30,199 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:34:30,199 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 15:34:30,199 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:34:30,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:34:30,224 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 15:34:30,224 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-23 15:34:30,235 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 15 states and 20 transitions. Complement of second has 5 states. [2018-11-23 15:34:30,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 15:34:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:34:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 15:34:30,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-23 15:34:30,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-23 15:34:30,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-23 15:34:30,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2018-11-23 15:34:30,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 15:34:30,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2018-11-23 15:34:30,239 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 15:34:30,239 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 15:34:30,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2018-11-23 15:34:30,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:34:30,239 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2018-11-23 15:34:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2018-11-23 15:34:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2018-11-23 15:34:30,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 15:34:30,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-23 15:34:30,241 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 15:34:30,241 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 15:34:30,241 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 15:34:30,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-23 15:34:30,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-23 15:34:30,241 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:34:30,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:34:30,242 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-23 15:34:30,242 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 15:34:30,242 INFO L794 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 130#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 127#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 128#L12-2 assume !(main_~y~0 < main_~x~0); 132#L12-3 main_~x~0 := main_~x~0 - 1; 131#L10-2 assume !!(main_~x~0 > 0);main_~y~0 := 0; 126#L12-2 [2018-11-23 15:34:30,242 INFO L796 eck$LassoCheckResult]: Loop: 126#L12-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 126#L12-2 [2018-11-23 15:34:30,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:30,243 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2018-11-23 15:34:30,243 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:30,243 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:30,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:30,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:34:30,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:34:30,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:34:30,273 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:34:30,279 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 15:34:30,282 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 15:34:30,282 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:34:30,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:34:30,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:34:30,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-23 15:34:30,305 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 15:34:30,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:30,305 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-23 15:34:30,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:34:30,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:34:30,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:30,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:34:30,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:34:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:34:30,325 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:34:30,325 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:34:30,325 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:34:30,325 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:34:30,325 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:34:30,325 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:30,325 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:34:30,325 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:34:30,326 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 15:34:30,326 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:34:30,326 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:34:30,327 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,357 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:34:30,357 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:30,362 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:34:30,362 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0a7c7cde-76af-45f7-a4a9-fae61b597dd3/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:30,379 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:34:30,379 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:34:30,490 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:34:30,491 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:34:30,491 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:34:30,491 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:34:30,491 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:34:30,491 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:34:30,491 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:34:30,491 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:34:30,491 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:34:30,491 INFO L131 ssoRankerPreferences]: Filename of dumped script: PastaA1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 15:34:30,491 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:34:30,491 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:34:30,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:34:30,522 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:34:30,522 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:34:30,522 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 15:34:30,523 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:34:30,523 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:34:30,523 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:34:30,523 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:34:30,523 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:34:30,523 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:34:30,523 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:34:30,525 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:34:30,529 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-23 15:34:30,529 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 15:34:30,529 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:34:30,529 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:34:30,529 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:34:30,529 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 15:34:30,530 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:34:30,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:34:30,551 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 15:34:30,551 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 15:34:30,559 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2018-11-23 15:34:30,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 15:34:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:34:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 15:34:30,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 15:34:30,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,560 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:34:30,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:34:30,586 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 15:34:30,586 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 15:34:30,592 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2018-11-23 15:34:30,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 15:34:30,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:34:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 15:34:30,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 15:34:30,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,593 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:34:30,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:34:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,619 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:34:30,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:34:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:34:30,622 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 1 loop predicates [2018-11-23 15:34:30,622 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-23 15:34:30,631 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2018-11-23 15:34:30,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 15:34:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 15:34:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-23 15:34:30,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-23 15:34:30,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-23 15:34:30,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 15:34:30,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:34:30,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-23 15:34:30,634 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:34:30,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-23 15:34:30,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 15:34:30,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 15:34:30,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 15:34:30,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 15:34:30,634 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:34:30,634 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:34:30,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 15:34:30,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-23 15:34:30,635 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-11-23 15:34:30,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:34:30,635 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-23 15:34:30,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 15:34:30,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-23 15:34:30,635 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:34:30,635 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:34:30,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 15:34:30,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 15:34:30,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 15:34:30,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 15:34:30,636 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:34:30,636 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:34:30,636 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:34:30,636 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 15:34:30,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:34:30,636 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:34:30,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 15:34:30,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 03:34:30 BoogieIcfgContainer [2018-11-23 15:34:30,641 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 15:34:30,641 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:34:30,641 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:34:30,641 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:34:30,642 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:29" (3/4) ... [2018-11-23 15:34:30,644 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 15:34:30,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:34:30,645 INFO L168 Benchmark]: Toolchain (without parser) took 1806.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 958.1 MB in the beginning and 885.2 MB in the end (delta: 72.8 MB). Peak memory consumption was 197.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:34:30,646 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:34:30,646 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.08 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:34:30,646 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.00 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:34:30,647 INFO L168 Benchmark]: Boogie Preprocessor took 10.27 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:34:30,647 INFO L168 Benchmark]: RCFGBuilder took 141.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -162.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 15:34:30,648 INFO L168 Benchmark]: BuchiAutomizer took 1464.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 885.2 MB in the end (delta: 222.1 MB). Peak memory consumption was 222.1 MB. Max. memory is 11.5 GB. [2018-11-23 15:34:30,648 INFO L168 Benchmark]: Witness Printer took 2.84 ms. Allocated memory is still 1.2 GB. Free memory is still 885.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:34:30,651 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 165.08 ms. Allocated memory is still 1.0 GB. Free memory was 958.1 MB in the beginning and 947.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.00 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 944.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.27 ms. Allocated memory is still 1.0 GB. Free memory is still 944.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 141.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.8 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -162.7 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1464.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 885.2 MB in the end (delta: 222.1 MB). Peak memory consumption was 222.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.84 ms. Allocated memory is still 1.2 GB. Free memory is still 885.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 20 SDtfs, 14 SDslu, 3 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp95 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...