./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:06:41,368 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:06:41,369 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:06:41,378 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:06:41,378 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:06:41,379 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:06:41,380 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:06:41,381 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:06:41,382 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:06:41,383 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:06:41,384 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:06:41,384 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:06:41,384 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:06:41,385 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:06:41,386 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:06:41,386 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:06:41,387 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:06:41,388 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:06:41,390 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:06:41,391 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:06:41,391 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:06:41,392 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:06:41,394 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:06:41,394 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:06:41,394 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:06:41,395 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:06:41,396 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:06:41,396 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:06:41,397 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:06:41,397 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:06:41,398 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:06:41,398 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:06:41,398 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:06:41,398 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:06:41,399 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:06:41,400 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:06:41,400 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 12:06:41,411 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:06:41,411 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:06:41,412 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:06:41,412 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:06:41,412 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:06:41,412 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 12:06:41,413 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 12:06:41,413 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 12:06:41,413 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 12:06:41,413 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 12:06:41,413 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 12:06:41,413 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:06:41,413 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:06:41,414 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 12:06:41,415 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:06:41,415 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:06:41,415 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 12:06:41,415 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:06:41,415 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:06:41,415 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 12:06:41,416 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 12:06:41,416 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_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2018-11-28 12:06:41,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:06:41,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:06:41,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:06:41,453 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:06:41,453 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:06:41,454 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-28 12:06:41,505 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/data/5b379b85a/528507d98fc64ef0b6a44c5296409c30/FLAGead5cd6fd [2018-11-28 12:06:41,837 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:06:41,837 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-28 12:06:41,841 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/data/5b379b85a/528507d98fc64ef0b6a44c5296409c30/FLAGead5cd6fd [2018-11-28 12:06:42,268 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/data/5b379b85a/528507d98fc64ef0b6a44c5296409c30 [2018-11-28 12:06:42,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:06:42,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:06:42,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:06:42,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:06:42,277 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:06:42,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699d1347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42, skipping insertion in model container [2018-11-28 12:06:42,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:06:42,302 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:06:42,406 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:06:42,409 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:06:42,420 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:06:42,429 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:06:42,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42 WrapperNode [2018-11-28 12:06:42,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:06:42,430 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:06:42,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:06:42,431 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:06:42,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:06:42,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:06:42,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:06:42,458 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:06:42,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... [2018-11-28 12:06:42,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:06:42,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:06:42,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:06:42,473 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:06:42,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:42,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:06:42,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:06:42,669 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:06:42,669 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 12:06:42,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:42 BoogieIcfgContainer [2018-11-28 12:06:42,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:06:42,670 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 12:06:42,670 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 12:06:42,673 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 12:06:42,674 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:06:42,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 12:06:42" (1/3) ... [2018-11-28 12:06:42,675 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29c97124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:06:42, skipping insertion in model container [2018-11-28 12:06:42,676 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:06:42,676 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:06:42" (2/3) ... [2018-11-28 12:06:42,676 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29c97124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:06:42, skipping insertion in model container [2018-11-28 12:06:42,676 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:06:42,676 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:42" (3/3) ... [2018-11-28 12:06:42,678 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-28 12:06:42,726 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:06:42,727 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 12:06:42,727 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 12:06:42,727 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 12:06:42,727 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:06:42,727 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:06:42,727 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 12:06:42,727 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:06:42,727 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 12:06:42,738 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-28 12:06:42,756 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:42,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:42,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:42,761 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 12:06:42,761 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:06:42,761 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 12:06:42,761 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-28 12:06:42,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:42,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:42,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:42,763 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 12:06:42,763 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:06:42,769 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2018-11-28 12:06:42,769 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2018-11-28 12:06:42,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:42,774 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 12:06:42,775 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:42,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:42,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:42,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:42,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:42,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:42,844 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2018-11-28 12:06:42,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:42,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:42,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:42,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:42,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:42,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2018-11-28 12:06:42,855 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:42,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:42,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:42,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:42,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:42,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:42,907 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:42,907 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:42,907 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:42,908 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:42,908 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:42,908 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:42,908 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:42,908 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:42,908 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 12:06:42,909 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:42,909 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:42,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:42,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:42,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:42,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:42,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,064 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:43,065 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,073 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,073 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,094 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:43,094 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_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,097 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,098 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,114 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:43,114 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_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,122 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,122 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,138 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:43,139 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,142 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,142 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,144 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:43,144 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,161 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,161 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,179 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:43,179 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,201 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:43,202 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:43,203 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:43,203 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:43,203 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:43,203 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:43,203 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:43,203 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:43,203 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:43,203 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 12:06:43,203 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:43,203 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:43,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,268 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:43,271 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:43,272 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 [2018-11-28 12:06:43,273 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,274 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,274 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,274 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,277 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:06:43,277 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:06:43,281 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:43,281 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 [2018-11-28 12:06:43,282 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,282 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,282 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,282 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,284 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:06:43,284 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:06:43,291 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:43,292 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:06:43,293 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,293 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:43,293 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,293 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,293 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,294 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:43,294 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:43,295 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:43,295 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 [2018-11-28 12:06:43,296 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,296 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:43,296 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,296 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,296 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,297 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:43,297 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:43,298 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:43,298 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 [2018-11-28 12:06:43,299 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,299 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:43,299 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,299 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,300 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,300 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:43,300 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:43,304 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:43,307 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:43,307 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:06:43,308 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:43,308 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:43,308 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:43,309 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-28 12:06:43,309 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:43,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:43,348 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:43,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:43,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:43,376 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 [2018-11-28 12:06:43,377 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2018-11-28 12:06:43,448 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2018-11-28 12:06:43,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 12:06:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2018-11-28 12:06:43,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 12:06:43,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:43,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 12:06:43,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:43,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 12:06:43,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:43,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2018-11-28 12:06:43,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:43,464 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2018-11-28 12:06:43,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 12:06:43,465 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-28 12:06:43,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-11-28 12:06:43,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:43,466 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 12:06:43,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-11-28 12:06:43,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-28 12:06:43,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 12:06:43,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-28 12:06:43,492 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 12:06:43,493 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 12:06:43,493 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 12:06:43,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-28 12:06:43,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:43,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:43,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:43,494 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 12:06:43,494 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 12:06:43,494 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2018-11-28 12:06:43,494 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2018-11-28 12:06:43,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2018-11-28 12:06:43,495 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:43,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:43,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:43,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,508 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-11-28 12:06:43,508 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:43,508 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:43,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:43,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2018-11-28 12:06:43,516 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:43,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:43,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:43,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,550 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:43,551 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:43,551 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:43,551 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:43,551 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:43,551 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:43,551 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:43,551 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:43,551 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 12:06:43,551 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:43,551 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:43,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,621 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:43,621 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,623 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,624 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,641 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:43,642 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_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,644 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,644 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,661 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:43,661 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_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:43,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,664 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,667 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:43,667 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:43,683 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/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 [2018-11-28 12:06:43,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:43,701 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:43,825 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:43,826 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:43,826 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:43,827 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:43,827 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:43,827 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:43,827 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:43,827 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:43,827 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:43,827 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 12:06:43,828 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:43,828 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:43,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:43,873 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:43,873 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:43,874 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 [2018-11-28 12:06:43,875 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,875 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,875 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,875 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,876 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:06:43,877 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:06:43,880 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:43,880 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:06:43,881 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,881 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,881 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,881 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,883 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:06:43,883 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:06:43,887 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:43,887 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:06:43,888 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,888 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:43,888 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,889 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 12:06:43,889 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,889 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 12:06:43,889 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:43,893 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:43,893 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 [2018-11-28 12:06:43,894 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:43,894 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:43,894 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:43,894 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:43,894 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:43,895 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:43,895 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:43,898 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:43,901 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:43,901 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:06:43,901 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:43,901 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:43,902 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:43,902 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-28 12:06:43,902 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:43,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:43,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:43,946 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:43,947 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 [2018-11-28 12:06:43,947 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2018-11-28 12:06:43,959 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2018-11-28 12:06:43,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:43,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 12:06:43,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-11-28 12:06:43,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-28 12:06:43,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:43,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-28 12:06:43,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:43,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 12:06:43,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:43,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2018-11-28 12:06:43,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:43,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2018-11-28 12:06:43,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-28 12:06:43,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 12:06:43,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2018-11-28 12:06:43,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:43,964 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-28 12:06:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2018-11-28 12:06:43,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-28 12:06:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 12:06:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2018-11-28 12:06:43,966 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-11-28 12:06:43,966 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-11-28 12:06:43,966 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 12:06:43,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2018-11-28 12:06:43,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:43,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:43,967 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:43,969 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-28 12:06:43,969 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 12:06:43,969 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2018-11-28 12:06:43,969 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2018-11-28 12:06:43,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,970 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2018-11-28 12:06:43,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:43,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:43,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,971 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:43,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,980 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2018-11-28 12:06:43,980 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:43,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:43,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:43,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:43,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:43,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2018-11-28 12:06:43,988 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:43,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:43,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:43,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,036 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:44,036 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:44,036 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:44,036 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:44,037 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:44,037 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,037 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:44,037 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:44,037 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 12:06:44,037 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:44,037 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:44,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,114 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:44,115 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,118 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:44,119 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,136 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:44,137 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:44,221 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:44,223 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:44,223 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:44,223 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:44,223 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:44,223 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:44,223 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,224 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:44,224 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:44,224 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 12:06:44,224 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:44,224 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:44,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,298 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:44,298 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:44,298 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 [2018-11-28 12:06:44,299 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:44,299 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:44,299 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:44,299 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 12:06:44,299 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:44,300 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 12:06:44,300 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:44,309 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:44,311 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:44,311 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:06:44,313 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:44,313 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:44,313 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:44,313 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:06:44,313 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:44,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:44,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:44,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:44,367 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:06:44,368 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2018-11-28 12:06:44,384 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2018-11-28 12:06:44,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:06:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-28 12:06:44,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2018-11-28 12:06:44,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:44,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-28 12:06:44,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:44,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-28 12:06:44,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:44,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2018-11-28 12:06:44,388 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:44,389 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2018-11-28 12:06:44,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 12:06:44,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-28 12:06:44,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2018-11-28 12:06:44,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:44,390 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-11-28 12:06:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2018-11-28 12:06:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-28 12:06:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 12:06:44,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2018-11-28 12:06:44,393 INFO L728 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-11-28 12:06:44,393 INFO L608 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-11-28 12:06:44,393 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 12:06:44,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2018-11-28 12:06:44,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 12:06:44,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:44,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:44,394 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-11-28 12:06:44,394 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 12:06:44,395 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2018-11-28 12:06:44,395 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2018-11-28 12:06:44,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:44,395 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2018-11-28 12:06:44,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:44,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:44,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:44,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 12:06:44,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:06:44,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 12:06:44,430 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 12:06:44,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:44,430 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2018-11-28 12:06:44,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:44,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:44,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,432 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:44,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,459 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:44,459 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:44,459 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:44,459 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:44,459 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:44,459 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,459 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:44,460 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:44,460 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 12:06:44,460 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:44,460 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:44,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,531 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:44,531 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,534 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:44,534 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:44,537 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:44,537 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=7} Honda state: {ULTIMATE.start_main_#t~nondet1=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,552 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:44,553 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,569 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:44,570 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:44,601 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:44,603 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:44,603 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:44,603 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:44,603 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:44,603 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:44,603 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,603 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:44,604 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:44,604 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 12:06:44,604 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:44,604 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:44,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,663 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:44,663 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:44,664 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 [2018-11-28 12:06:44,664 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:44,664 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:44,664 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:44,664 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 12:06:44,665 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:44,665 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 12:06:44,665 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:44,667 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:44,667 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 [2018-11-28 12:06:44,668 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:44,668 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:44,668 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:44,668 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:44,668 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:44,669 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:44,669 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:44,671 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:44,672 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:44,672 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:06:44,672 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:44,672 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:44,672 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:44,673 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 12:06:44,673 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:44,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:44,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:44,699 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:44,729 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:06:44,729 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-11-28 12:06:44,749 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2018-11-28 12:06:44,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:06:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2018-11-28 12:06:44,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-28 12:06:44,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:44,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2018-11-28 12:06:44,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:44,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2018-11-28 12:06:44,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:44,751 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2018-11-28 12:06:44,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 12:06:44,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2018-11-28 12:06:44,754 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 12:06:44,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-28 12:06:44,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2018-11-28 12:06:44,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:44,755 INFO L705 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2018-11-28 12:06:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2018-11-28 12:06:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2018-11-28 12:06:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 12:06:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2018-11-28 12:06:44,758 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2018-11-28 12:06:44,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 12:06:44,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 12:06:44,762 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2018-11-28 12:06:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:06:44,777 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2018-11-28 12:06:44,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 12:06:44,778 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2018-11-28 12:06:44,778 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 12:06:44,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2018-11-28 12:06:44,779 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 12:06:44,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 12:06:44,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2018-11-28 12:06:44,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:44,780 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-11-28 12:06:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2018-11-28 12:06:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-11-28 12:06:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 12:06:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2018-11-28 12:06:44,782 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-11-28 12:06:44,782 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2018-11-28 12:06:44,783 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 12:06:44,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2018-11-28 12:06:44,783 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 12:06:44,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:44,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:44,783 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-28 12:06:44,783 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 12:06:44,784 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2018-11-28 12:06:44,784 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2018-11-28 12:06:44,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:44,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2018-11-28 12:06:44,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:44,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:44,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:44,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:44,792 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2018-11-28 12:06:44,792 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:44,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:44,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:44,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2018-11-28 12:06:44,797 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:44,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:44,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,798 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:44,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:44,825 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:44,825 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:44,825 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:44,825 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:44,825 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:44,825 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,825 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:44,825 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:44,825 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 12:06:44,825 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:44,825 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:44,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,861 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:44,861 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,863 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:44,863 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,882 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:44,882 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:44,979 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:44,981 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:44,981 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:44,981 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:44,981 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:44,981 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:44,981 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:44,981 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:44,981 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:44,981 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 12:06:44,981 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:44,981 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:44,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:44,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,008 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:45,008 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:45,009 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 [2018-11-28 12:06:45,009 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:45,009 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:45,009 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:45,010 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:45,010 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:45,010 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:45,010 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:45,012 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:45,013 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:45,013 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:06:45,014 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:45,014 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:45,014 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:45,014 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-28 12:06:45,014 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:45,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:45,035 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 [2018-11-28 12:06:45,035 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-11-28 12:06:45,041 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2018-11-28 12:06:45,041 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 [2018-11-28 12:06:45,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 12:06:45,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 12:06:45,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-28 12:06:45,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,042 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:06:45,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:45,059 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 [2018-11-28 12:06:45,059 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-11-28 12:06:45,065 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2018-11-28 12:06:45,065 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 [2018-11-28 12:06:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 12:06:45,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 12:06:45,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-28 12:06:45,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,066 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:06:45,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:45,081 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 [2018-11-28 12:06:45,081 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2018-11-28 12:06:45,094 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2018-11-28 12:06:45,094 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 [2018-11-28 12:06:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 12:06:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-28 12:06:45,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-28 12:06:45,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2018-11-28 12:06:45,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-28 12:06:45,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,096 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2018-11-28 12:06:45,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,097 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2018-11-28 12:06:45,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 12:06:45,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 12:06:45,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2018-11-28 12:06:45,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:45,097 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2018-11-28 12:06:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2018-11-28 12:06:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2018-11-28 12:06:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 12:06:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2018-11-28 12:06:45,099 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2018-11-28 12:06:45,099 INFO L608 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2018-11-28 12:06:45,099 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 12:06:45,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2018-11-28 12:06:45,099 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:45,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:45,100 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2018-11-28 12:06:45,100 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:06:45,100 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2018-11-28 12:06:45,100 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2018-11-28 12:06:45,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2018-11-28 12:06:45,101 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,102 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,112 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2018-11-28 12:06:45,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:06:45,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2018-11-28 12:06:45,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,117 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,138 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 12:06:45,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:06:45,138 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:06:45,147 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:06:45,156 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:06:45,156 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:06:45,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-28 12:06:45,188 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:06:45,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 12:06:45,218 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:45,218 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:45,218 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:45,218 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:45,218 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:45,218 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,218 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:45,218 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:45,218 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 12:06:45,218 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:45,218 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:45,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,268 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:45,268 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,271 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:45,271 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:45,288 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:45,288 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,292 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:45,292 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:45,308 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:45,308 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,313 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:45,313 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:45,316 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:45,316 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,333 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:45,334 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,353 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:45,353 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:45,385 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:45,386 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:45,387 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:45,387 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:45,387 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:45,387 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:45,387 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,387 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:45,387 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:45,387 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 12:06:45,387 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:45,387 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:45,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,420 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:45,420 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:45,421 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 [2018-11-28 12:06:45,421 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:45,421 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:45,421 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:45,421 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:45,422 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:06:45,422 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:06:45,425 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:45,425 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 [2018-11-28 12:06:45,426 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:45,426 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:45,426 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:45,426 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:45,426 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:45,427 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:45,428 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:45,429 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:45,429 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:06:45,430 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:45,430 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:45,430 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:45,430 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:45,430 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:45,431 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:45,431 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:45,433 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:45,434 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:45,434 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:06:45,435 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:45,435 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:45,435 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:45,435 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:06:45,435 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:45,449 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:45,467 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:06:45,467 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-28 12:06:45,479 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2018-11-28 12:06:45,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:45,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:06:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 12:06:45,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-28 12:06:45,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-28 12:06:45,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,481 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2018-11-28 12:06:45,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,481 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2018-11-28 12:06:45,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2018-11-28 12:06:45,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 12:06:45,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 12:06:45,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2018-11-28 12:06:45,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:45,483 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2018-11-28 12:06:45,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2018-11-28 12:06:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2018-11-28 12:06:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 12:06:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2018-11-28 12:06:45,485 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2018-11-28 12:06:45,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 12:06:45,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 12:06:45,486 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2018-11-28 12:06:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:06:45,511 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2018-11-28 12:06:45,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 12:06:45,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2018-11-28 12:06:45,513 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2018-11-28 12:06:45,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 12:06:45,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 12:06:45,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2018-11-28 12:06:45,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:45,514 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2018-11-28 12:06:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2018-11-28 12:06:45,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2018-11-28 12:06:45,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 12:06:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2018-11-28 12:06:45,517 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2018-11-28 12:06:45,517 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2018-11-28 12:06:45,518 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 12:06:45,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2018-11-28 12:06:45,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,518 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:45,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:45,519 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2018-11-28 12:06:45,519 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:06:45,519 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2018-11-28 12:06:45,519 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2018-11-28 12:06:45,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,519 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2018-11-28 12:06:45,520 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,520 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,521 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,532 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2018-11-28 12:06:45,533 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,533 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,538 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2018-11-28 12:06:45,538 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 12:06:45,580 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:06:45,580 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:06:45,599 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 12:06:45,609 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 12:06:45,610 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:06:45,612 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,618 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 12:06:45,635 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:06:45,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 12:06:45,652 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:45,652 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:45,652 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:45,652 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:45,652 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:45,652 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,652 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:45,653 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:45,653 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-28 12:06:45,653 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:45,653 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:45,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,691 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:45,691 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,694 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:45,694 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:45,711 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:45,711 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,715 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:45,715 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,734 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:45,734 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:45,767 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:45,768 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:45,768 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:45,768 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:45,769 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:45,769 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:45,769 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,769 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:45,769 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:45,769 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-28 12:06:45,769 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:45,769 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:45,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,804 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:45,805 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:45,805 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 [2018-11-28 12:06:45,805 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:45,805 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:45,806 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:45,806 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:45,806 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:45,806 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:45,806 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:45,807 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:45,808 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:45,808 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:06:45,809 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:45,809 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:45,809 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:45,809 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:06:45,809 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:45,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,829 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:45,844 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:06:45,844 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-11-28 12:06:45,855 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2018-11-28 12:06:45,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:06:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 12:06:45,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2018-11-28 12:06:45,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,855 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:06:45,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:45,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:45,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:45,881 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:06:45,881 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2018-11-28 12:06:45,907 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2018-11-28 12:06:45,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:06:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-28 12:06:45,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2018-11-28 12:06:45,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2018-11-28 12:06:45,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2018-11-28 12:06:45,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:45,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2018-11-28 12:06:45,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2018-11-28 12:06:45,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 12:06:45,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 12:06:45,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2018-11-28 12:06:45,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:45,911 INFO L705 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2018-11-28 12:06:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2018-11-28 12:06:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2018-11-28 12:06:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-28 12:06:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2018-11-28 12:06:45,916 INFO L728 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2018-11-28 12:06:45,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 12:06:45,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 12:06:45,916 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2018-11-28 12:06:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:06:45,934 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2018-11-28 12:06:45,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 12:06:45,935 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2018-11-28 12:06:45,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2018-11-28 12:06:45,936 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 12:06:45,936 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 12:06:45,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2018-11-28 12:06:45,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:06:45,937 INFO L705 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2018-11-28 12:06:45,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2018-11-28 12:06:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2018-11-28 12:06:45,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-11-28 12:06:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2018-11-28 12:06:45,943 INFO L728 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2018-11-28 12:06:45,943 INFO L608 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2018-11-28 12:06:45,943 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 12:06:45,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2018-11-28 12:06:45,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 12:06:45,944 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:06:45,944 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:06:45,944 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2018-11-28 12:06:45,944 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:06:45,944 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2018-11-28 12:06:45,945 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2018-11-28 12:06:45,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2018-11-28 12:06:45,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,955 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2018-11-28 12:06:45,955 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,958 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:45,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2018-11-28 12:06:45,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:06:45,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:06:45,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:06:45,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:06:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:06:45,989 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:45,989 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:45,989 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:45,989 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:45,989 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:06:45,989 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:45,989 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:45,990 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:45,990 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-28 12:06:45,990 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:45,990 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:45,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:45,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,034 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:46,034 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:46,036 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:46,036 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:46,054 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:06:46,054 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:46,057 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:06:46,057 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2d5d9341-3a32-480f-b290-7167e1d9f5d1/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:46,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:06:46,077 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:06:46,110 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:06:46,112 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:06:46,112 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:06:46,112 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:06:46,112 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:06:46,112 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:06:46,112 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:06:46,112 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:06:46,112 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:06:46,112 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-28 12:06:46,112 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:06:46,112 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:06:46,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:06:46,143 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:06:46,143 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:06:46,143 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:06:46,143 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:46,144 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:46,144 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:46,144 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:46,145 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 12:06:46,145 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 12:06:46,147 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:06:46,147 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 [2018-11-28 12:06:46,147 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:06:46,147 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:06:46,147 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:06:46,148 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:06:46,148 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:06:46,148 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:06:46,148 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:06:46,149 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:06:46,150 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:06:46,150 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 12:06:46,151 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:06:46,151 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:06:46,151 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:06:46,151 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 12:06:46,151 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:06:46,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:46,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:46,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:46,199 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:06:46,199 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-11-28 12:06:46,212 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2018-11-28 12:06:46,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:06:46,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 12:06:46,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 12:06:46,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:46,213 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:06:46,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:46,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:46,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:46,243 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:06:46,243 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-11-28 12:06:46,262 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2018-11-28 12:06:46,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:06:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-28 12:06:46,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 12:06:46,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:46,263 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:06:46,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:06:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:46,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:06:46,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:06:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:06:46,297 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 3 loop predicates [2018-11-28 12:06:46,298 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2018-11-28 12:06:46,316 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2018-11-28 12:06:46,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:06:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:06:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-28 12:06:46,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 12:06:46,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:46,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2018-11-28 12:06:46,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:46,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2018-11-28 12:06:46,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:06:46,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2018-11-28 12:06:46,320 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 12:06:46,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2018-11-28 12:06:46,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 12:06:46,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 12:06:46,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 12:06:46,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 12:06:46,320 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:06:46,320 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:06:46,320 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:06:46,321 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-28 12:06:46,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:06:46,321 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 12:06:46,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 12:06:46,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 12:06:46 BoogieIcfgContainer [2018-11-28 12:06:46,329 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 12:06:46,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:06:46,330 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:06:46,330 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:06:46,330 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:06:42" (3/4) ... [2018-11-28 12:06:46,334 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 12:06:46,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:06:46,335 INFO L168 Benchmark]: Toolchain (without parser) took 4063.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 210.8 MB). Free memory was 953.3 MB in the beginning and 882.2 MB in the end (delta: 71.1 MB). Peak memory consumption was 281.9 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:46,336 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:06:46,337 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:46,338 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.21 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:06:46,339 INFO L168 Benchmark]: Boogie Preprocessor took 14.92 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:46,339 INFO L168 Benchmark]: RCFGBuilder took 196.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:46,340 INFO L168 Benchmark]: BuchiAutomizer took 3659.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 886.7 MB in the end (delta: 234.7 MB). Peak memory consumption was 307.6 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:46,340 INFO L168 Benchmark]: Witness Printer took 4.50 ms. Allocated memory is still 1.2 GB. Free memory was 886.7 MB in the beginning and 882.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 11.5 GB. [2018-11-28 12:06:46,343 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 156.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 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 27.21 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.92 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 196.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -181.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3659.46 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 72.9 MB). Free memory was 1.1 GB in the beginning and 886.7 MB in the end (delta: 234.7 MB). Peak memory consumption was 307.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.50 ms. Allocated memory is still 1.2 GB. Free memory was 886.7 MB in the beginning and 882.2 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 2.6s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...