./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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/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-aa41828 [2018-11-23 12:17:39,652 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 12:17:39,653 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 12:17:39,660 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 12:17:39,660 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 12:17:39,661 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 12:17:39,662 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 12:17:39,663 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 12:17:39,664 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 12:17:39,665 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 12:17:39,665 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 12:17:39,666 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 12:17:39,666 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 12:17:39,667 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 12:17:39,668 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 12:17:39,668 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 12:17:39,669 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 12:17:39,670 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 12:17:39,671 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 12:17:39,672 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 12:17:39,673 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 12:17:39,674 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 12:17:39,675 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 12:17:39,675 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 12:17:39,675 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 12:17:39,675 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 12:17:39,676 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 12:17:39,676 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 12:17:39,677 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 12:17:39,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 12:17:39,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 12:17:39,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 12:17:39,678 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 12:17:39,678 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 12:17:39,678 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 12:17:39,679 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 12:17:39,679 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 12:17:39,687 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 12:17:39,688 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 12:17:39,688 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 12:17:39,689 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 12:17:39,689 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 12:17:39,689 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 12:17:39,689 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 12:17:39,689 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 12:17:39,689 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 12:17:39,689 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 12:17:39,690 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 12:17:39,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 12:17:39,690 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 12:17:39,690 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 12:17:39,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 12:17:39,690 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 12:17:39,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 12:17:39,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 12:17:39,691 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 12:17:39,691 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 12:17:39,691 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 12:17:39,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 12:17:39,691 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 12:17:39,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 12:17:39,692 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 12:17:39,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 12:17:39,692 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 12:17:39,692 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 12:17:39,693 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 12:17:39,693 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_3cffb859-fbd6-4016-8e14-17c7e2997468/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 [2018-11-23 12:17:39,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 12:17:39,728 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 12:17:39,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 12:17:39,731 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 12:17:39,732 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 12:17:39,732 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-23 12:17:39,767 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/data/541a8da00/bee5f1a4844c44b7bc6ab3312678086a/FLAG8a0219285 [2018-11-23 12:17:40,066 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 12:17:40,067 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-23 12:17:40,071 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/data/541a8da00/bee5f1a4844c44b7bc6ab3312678086a/FLAG8a0219285 [2018-11-23 12:17:40,080 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/data/541a8da00/bee5f1a4844c44b7bc6ab3312678086a [2018-11-23 12:17:40,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 12:17:40,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 12:17:40,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 12:17:40,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 12:17:40,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 12:17:40,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd21f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40, skipping insertion in model container [2018-11-23 12:17:40,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 12:17:40,111 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 12:17:40,215 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:17:40,217 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 12:17:40,227 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 12:17:40,235 INFO L195 MainTranslator]: Completed translation [2018-11-23 12:17:40,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40 WrapperNode [2018-11-23 12:17:40,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 12:17:40,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 12:17:40,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 12:17:40,236 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 12:17:40,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 12:17:40,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 12:17:40,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 12:17:40,256 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 12:17:40,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... [2018-11-23 12:17:40,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 12:17:40,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 12:17:40,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 12:17:40,268 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 12:17:40,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:40,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 12:17:40,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 12:17:40,461 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 12:17:40,462 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 12:17:40,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:40 BoogieIcfgContainer [2018-11-23 12:17:40,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 12:17:40,462 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 12:17:40,462 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 12:17:40,466 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 12:17:40,466 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 12:17:40,467 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 12:17:40" (1/3) ... [2018-11-23 12:17:40,468 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7da35130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:17:40, skipping insertion in model container [2018-11-23 12:17:40,468 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 12:17:40,468 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:17:40" (2/3) ... [2018-11-23 12:17:40,468 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7da35130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 12:17:40, skipping insertion in model container [2018-11-23 12:17:40,468 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 12:17:40,469 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:40" (3/3) ... [2018-11-23 12:17:40,470 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-23 12:17:40,522 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 12:17:40,522 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 12:17:40,523 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 12:17:40,523 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 12:17:40,523 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 12:17:40,523 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 12:17:40,523 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 12:17:40,523 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 12:17:40,523 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 12:17:40,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-23 12:17:40,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:40,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:40,548 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:40,552 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 12:17:40,552 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 12:17:40,552 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 12:17:40,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2018-11-23 12:17:40,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:40,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:40,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:40,554 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 12:17:40,554 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 12:17:40,561 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2018-11-23 12:17:40,561 INFO L796 eck$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 [2018-11-23 12:17:40,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:40,567 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 12:17:40,568 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:40,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:40,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:40,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:40,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:40,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:40,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:40,638 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2018-11-23 12:17:40,638 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:40,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:40,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:40,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:40,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:40,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:40,648 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2018-11-23 12:17:40,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:40,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:40,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:40,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:40,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:40,722 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:40,723 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:40,723 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:40,723 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:40,723 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:40,724 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:40,724 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:40,724 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:40,724 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 12:17:40,724 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:40,724 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:40,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,836 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:40,837 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:40,852 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:40,853 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:40,879 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:40,879 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:40,882 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:40,882 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:40,901 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:40,901 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:40,906 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:40,906 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:40,927 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:40,927 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:40,948 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:40,949 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:40,949 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:40,949 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:40,949 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:40,949 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:40,949 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:40,950 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:40,950 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:40,950 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-23 12:17:40,950 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:40,950 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:40,952 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:40,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,063 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:41,067 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:41,069 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:41,070 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:41,071 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:41,071 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:41,071 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:41,075 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:41,075 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:41,081 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:41,081 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:41,082 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:41,082 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:41,082 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:41,082 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:41,084 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:41,084 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:41,091 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:41,091 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:41,091 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:41,092 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:41,092 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:41,092 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:41,092 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:41,093 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:41,093 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:41,096 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:41,099 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:41,099 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 12:17:41,100 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:41,101 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:41,101 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:41,101 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-23 12:17:41,102 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:41,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:41,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:41,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:41,179 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 12:17:41,180 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2018-11-23 12:17:41,228 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. [2018-11-23 12:17:41,229 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 [2018-11-23 12:17:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 12:17:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2018-11-23 12:17:41,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-23 12:17:41,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:41,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-23 12:17:41,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:41,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-23 12:17:41,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:41,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2018-11-23 12:17:41,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:41,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2018-11-23 12:17:41,243 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-23 12:17:41,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-23 12:17:41,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-11-23 12:17:41,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:41,244 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-23 12:17:41,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-11-23 12:17:41,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-23 12:17:41,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-23 12:17:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-23 12:17:41,265 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-23 12:17:41,265 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-23 12:17:41,265 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 12:17:41,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-23 12:17:41,266 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:41,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:41,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:41,266 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-23 12:17:41,267 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 12:17:41,267 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2018-11-23 12:17:41,267 INFO L796 eck$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 [2018-11-23 12:17:41,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,267 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2018-11-23 12:17:41,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:41,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:41,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:41,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,277 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2018-11-23 12:17:41,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:41,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:41,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:41,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,282 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2018-11-23 12:17:41,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:41,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:41,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:41,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,316 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:41,316 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:41,316 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:41,316 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:41,316 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:41,316 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,316 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:41,317 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:41,317 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 12:17:41,317 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:41,317 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:41,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,372 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:41,372 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,376 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:41,376 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:41,394 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:41,395 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,397 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:41,398 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:41,416 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:41,416 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,419 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:41,419 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:41,422 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:41,422 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,440 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:41,441 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,461 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:41,461 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:41,601 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:41,602 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:41,602 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:41,602 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:41,603 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:41,603 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:41,603 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,603 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:41,603 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:41,603 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-23 12:17:41,603 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:41,604 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:41,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,668 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:41,668 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:41,669 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:41,670 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:41,670 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:41,670 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:41,670 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:41,672 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:41,672 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:41,676 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:41,677 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:41,677 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:41,678 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:41,678 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:41,678 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:41,680 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:41,680 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:41,684 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:41,685 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:41,685 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:41,685 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:41,685 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:41,686 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 12:17:41,686 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:41,687 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 12:17:41,687 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:41,690 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:41,691 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:41,691 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:41,692 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:41,692 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:41,692 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:41,692 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:41,693 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:41,693 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:41,697 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:41,701 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:41,701 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 12:17:41,702 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:41,702 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:41,702 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:41,702 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~m~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~m~0 + 1 Supporting invariants [] [2018-11-23 12:17:41,703 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:41,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:41,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:41,732 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:41,732 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 12:17:41,732 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2018-11-23 12:17:41,758 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. [2018-11-23 12:17:41,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 12:17:41,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-11-23 12:17:41,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-23 12:17:41,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:41,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-23 12:17:41,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:41,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 12:17:41,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:41,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2018-11-23 12:17:41,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:41,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2018-11-23 12:17:41,763 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-23 12:17:41,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-23 12:17:41,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2018-11-23 12:17:41,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:41,764 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2018-11-23 12:17:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2018-11-23 12:17:41,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-23 12:17:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 12:17:41,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2018-11-23 12:17:41,766 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-11-23 12:17:41,766 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2018-11-23 12:17:41,766 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 12:17:41,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2018-11-23 12:17:41,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:41,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:41,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:41,770 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-23 12:17:41,770 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-23 12:17:41,770 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2018-11-23 12:17:41,770 INFO L796 eck$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 [2018-11-23 12:17:41,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,771 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2018-11-23 12:17:41,771 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:41,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:41,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,772 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:41,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,782 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2018-11-23 12:17:41,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:41,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:41,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:41,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:41,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2018-11-23 12:17:41,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:41,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:41,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:41,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:41,849 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:41,849 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:41,849 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:41,849 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:41,849 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:41,849 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,849 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:41,849 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:41,849 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 12:17:41,850 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:41,850 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:41,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:41,929 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:41,929 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,940 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:41,940 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:41,960 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:41,960 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:41,966 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:41,996 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:41,996 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:42,091 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:42,092 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:42,092 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:42,092 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:42,092 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:42,092 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:42,092 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,093 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:42,093 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:42,093 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-23 12:17:42,093 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:42,093 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:42,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,179 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:42,179 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:42,180 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:42,180 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:42,181 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:42,181 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:42,181 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:42,182 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:42,182 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:42,186 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:42,186 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:42,186 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:42,187 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:42,187 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:42,187 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 12:17:42,187 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:42,188 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 12:17:42,188 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:42,195 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:42,198 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:42,198 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 12:17:42,199 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:42,199 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:42,199 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:42,199 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 12:17:42,200 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:42,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:42,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:42,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:42,257 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 12:17:42,258 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2018-11-23 12:17:42,272 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. [2018-11-23 12:17:42,273 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 [2018-11-23 12:17:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 12:17:42,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-23 12:17:42,273 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2018-11-23 12:17:42,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:42,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-23 12:17:42,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:42,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-23 12:17:42,274 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:42,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2018-11-23 12:17:42,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:42,276 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2018-11-23 12:17:42,276 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-23 12:17:42,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-23 12:17:42,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2018-11-23 12:17:42,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:42,276 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2018-11-23 12:17:42,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2018-11-23 12:17:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2018-11-23 12:17:42,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-23 12:17:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2018-11-23 12:17:42,279 INFO L728 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-11-23 12:17:42,279 INFO L608 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2018-11-23 12:17:42,279 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 12:17:42,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2018-11-23 12:17:42,280 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 12:17:42,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:42,280 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:42,281 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2018-11-23 12:17:42,281 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-23 12:17:42,281 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2018-11-23 12:17:42,281 INFO L796 eck$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 [2018-11-23 12:17:42,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,281 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2018-11-23 12:17:42,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:42,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:42,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:42,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 12:17:42,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 12:17:42,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 12:17:42,310 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 12:17:42,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2018-11-23 12:17:42,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:42,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:42,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,311 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:42,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,351 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:42,352 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:42,352 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:42,352 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:42,352 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:42,352 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,352 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:42,352 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:42,352 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 12:17:42,352 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:42,352 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:42,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,411 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:42,412 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,422 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:42,422 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:42,425 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:42,425 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,451 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:42,451 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,468 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:42,468 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:42,555 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:42,557 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:42,557 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:42,557 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:42,557 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:42,557 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:42,557 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,557 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:42,557 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:42,557 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-23 12:17:42,557 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:42,557 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:42,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,624 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:42,624 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:42,624 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:42,625 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:42,625 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:42,625 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:42,625 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 12:17:42,625 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:42,626 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 12:17:42,626 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:42,631 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:42,632 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:42,632 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:42,632 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:42,633 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:42,633 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-23 12:17:42,633 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:42,634 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-23 12:17:42,634 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:42,638 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:42,641 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:42,641 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 12:17:42,642 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:42,642 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:42,642 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:42,642 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 12:17:42,643 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:42,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:42,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:42,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:42,678 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 12:17:42,678 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 5 states. [2018-11-23 12:17:42,702 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 5 states. Result 43 states and 61 transitions. Complement of second has 7 states. [2018-11-23 12:17:42,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:42,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 12:17:42,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-23 12:17:42,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-23 12:17:42,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:42,704 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 12:17:42,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:42,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:42,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:42,746 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 [2018-11-23 12:17:42,747 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 5 states. [2018-11-23 12:17:42,766 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 5 states. Result 68 states and 97 transitions. Complement of second has 10 states. [2018-11-23 12:17:42,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 12:17:42,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 27 transitions. [2018-11-23 12:17:42,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 27 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-23 12:17:42,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:42,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 27 transitions. Stem has 15 letters. Loop has 5 letters. [2018-11-23 12:17:42,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:42,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 27 transitions. Stem has 10 letters. Loop has 10 letters. [2018-11-23 12:17:42,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:42,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 97 transitions. [2018-11-23 12:17:42,774 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-11-23 12:17:42,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 61 states and 85 transitions. [2018-11-23 12:17:42,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-23 12:17:42,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-23 12:17:42,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 85 transitions. [2018-11-23 12:17:42,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:42,775 INFO L705 BuchiCegarLoop]: Abstraction has 61 states and 85 transitions. [2018-11-23 12:17:42,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 85 transitions. [2018-11-23 12:17:42,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2018-11-23 12:17:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-11-23 12:17:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 74 transitions. [2018-11-23 12:17:42,778 INFO L728 BuchiCegarLoop]: Abstraction has 50 states and 74 transitions. [2018-11-23 12:17:42,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 12:17:42,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 12:17:42,781 INFO L87 Difference]: Start difference. First operand 50 states and 74 transitions. Second operand 4 states. [2018-11-23 12:17:42,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:17:42,816 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2018-11-23 12:17:42,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 12:17:42,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 57 transitions. [2018-11-23 12:17:42,817 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-23 12:17:42,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 34 states and 48 transitions. [2018-11-23 12:17:42,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-23 12:17:42,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-23 12:17:42,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 48 transitions. [2018-11-23 12:17:42,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:42,818 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 48 transitions. [2018-11-23 12:17:42,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 48 transitions. [2018-11-23 12:17:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-23 12:17:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-23 12:17:42,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2018-11-23 12:17:42,820 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 48 transitions. [2018-11-23 12:17:42,820 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 48 transitions. [2018-11-23 12:17:42,820 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 12:17:42,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 48 transitions. [2018-11-23 12:17:42,821 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-23 12:17:42,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:42,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:42,821 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-23 12:17:42,821 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-23 12:17:42,821 INFO L794 eck$LassoCheckResult]: Stem: 643#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; 644#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 659#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 660#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 670#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 649#L20-3 main_~x~0 := main_~x~0 - 1; 650#L19-2 main_~y~0 := main_~y~0 - 1; 647#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 648#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 655#L20-2 [2018-11-23 12:17:42,822 INFO L796 eck$LassoCheckResult]: Loop: 655#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 656#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 663#L20-3 main_~x~0 := main_~x~0 - 1; 653#L19-2 main_~y~0 := main_~y~0 - 1; 645#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 646#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 655#L20-2 [2018-11-23 12:17:42,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2018-11-23 12:17:42,822 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:42,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:42,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,823 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:42,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1536619142, now seen corresponding path program 1 times [2018-11-23 12:17:42,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:42,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:42,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:42,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:42,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756691, now seen corresponding path program 4 times [2018-11-23 12:17:42,834 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:42,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:42,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:42,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:42,881 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:42,881 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:42,881 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:42,881 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:42,881 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:42,881 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,881 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:42,881 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:42,882 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 12:17:42,882 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:42,882 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:42,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,928 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:42,928 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,932 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:42,932 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,953 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:42,954 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:42,985 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:42,986 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:42,987 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:42,987 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:42,987 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:42,987 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:42,987 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:42,987 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:42,987 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:42,987 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-23 12:17:42,987 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:42,987 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:42,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:42,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,029 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:43,029 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:43,030 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:43,030 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:43,030 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:43,030 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:43,031 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:43,031 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:43,031 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:43,031 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:43,033 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:43,034 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:43,034 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 12:17:43,034 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:43,034 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:43,034 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:43,034 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-23 12:17:43,035 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:43,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 12:17:43,058 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 12:17:43,058 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 48 transitions. cyclomatic complexity: 20 Second operand 5 states. [2018-11-23 12:17:43,067 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 48 transitions. cyclomatic complexity: 20. Second operand 5 states. Result 99 states and 142 transitions. Complement of second has 6 states. [2018-11-23 12:17:43,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:43,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 12:17:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 12:17:43,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-23 12:17:43,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2018-11-23 12:17:43,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 12 letters. [2018-11-23 12:17:43,071 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,071 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 142 transitions. [2018-11-23 12:17:43,073 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2018-11-23 12:17:43,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 66 states and 95 transitions. [2018-11-23 12:17:43,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-23 12:17:43,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-23 12:17:43,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 95 transitions. [2018-11-23 12:17:43,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:43,074 INFO L705 BuchiCegarLoop]: Abstraction has 66 states and 95 transitions. [2018-11-23 12:17:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 95 transitions. [2018-11-23 12:17:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2018-11-23 12:17:43,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-23 12:17:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 67 transitions. [2018-11-23 12:17:43,077 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 67 transitions. [2018-11-23 12:17:43,077 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 67 transitions. [2018-11-23 12:17:43,077 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 12:17:43,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 67 transitions. [2018-11-23 12:17:43,078 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-23 12:17:43,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:43,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:43,078 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-23 12:17:43,078 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-23 12:17:43,079 INFO L794 eck$LassoCheckResult]: Stem: 849#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; 850#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 857#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 858#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 889#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 870#L20-3 main_~x~0 := main_~x~0 - 1; 887#L19-2 main_~y~0 := main_~y~0 - 1; 886#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 885#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 854#L20-2 [2018-11-23 12:17:43,079 INFO L796 eck$LassoCheckResult]: Loop: 854#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 854#L20-2 [2018-11-23 12:17:43,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 5 times [2018-11-23 12:17:43,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,086 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2018-11-23 12:17:43,086 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,086 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,087 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 6 times [2018-11-23 12:17:43,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,106 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:43,106 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:43,106 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:43,106 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:43,106 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:43,106 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,106 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:43,106 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:43,106 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 12:17:43,106 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:43,106 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:43,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,133 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:43,134 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,136 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:43,136 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:43,151 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:43,151 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,155 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:43,155 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:43,170 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:43,170 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,173 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:43,173 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,194 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:43,194 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:43,300 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:43,301 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:43,301 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:43,301 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:43,301 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:43,301 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:43,301 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,301 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:43,301 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:43,301 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-23 12:17:43,301 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:43,302 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:43,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,328 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:43,328 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:43,328 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:43,329 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:43,329 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:43,329 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:43,329 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:43,330 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:43,330 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:43,335 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:43,335 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:43,336 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:43,336 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:43,336 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:43,336 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:43,336 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:43,336 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:43,336 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:43,338 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:43,339 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:43,339 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 12:17:43,339 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:43,339 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:43,340 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:43,340 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~m~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~m~0 + 1 Supporting invariants [] [2018-11-23 12:17:43,340 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:43,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:43,363 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 12:17:43,363 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 67 transitions. cyclomatic complexity: 30 Second operand 2 states. [2018-11-23 12:17:43,369 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 67 transitions. cyclomatic complexity: 30. Second operand 2 states. Result 51 states and 74 transitions. Complement of second has 5 states. [2018-11-23 12:17:43,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 12:17:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 12:17:43,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-23 12:17:43,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,371 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 12:17:43,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,390 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:43,390 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 12:17:43,391 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 67 transitions. cyclomatic complexity: 30 Second operand 2 states. [2018-11-23 12:17:43,396 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 67 transitions. cyclomatic complexity: 30. Second operand 2 states. Result 51 states and 74 transitions. Complement of second has 5 states. [2018-11-23 12:17:43,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 12:17:43,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 12:17:43,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-23 12:17:43,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,398 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 12:17:43,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,422 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:43,423 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 12:17:43,423 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 67 transitions. cyclomatic complexity: 30 Second operand 2 states. [2018-11-23 12:17:43,440 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 67 transitions. cyclomatic complexity: 30. Second operand 2 states. Result 62 states and 87 transitions. Complement of second has 4 states. [2018-11-23 12:17:43,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:43,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-23 12:17:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-23 12:17:43,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2018-11-23 12:17:43,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2018-11-23 12:17:43,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-23 12:17:43,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 87 transitions. [2018-11-23 12:17:43,445 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:43,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 44 states and 61 transitions. [2018-11-23 12:17:43,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 12:17:43,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 12:17:43,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 61 transitions. [2018-11-23 12:17:43,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:43,446 INFO L705 BuchiCegarLoop]: Abstraction has 44 states and 61 transitions. [2018-11-23 12:17:43,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 61 transitions. [2018-11-23 12:17:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-11-23 12:17:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-23 12:17:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2018-11-23 12:17:43,453 INFO L728 BuchiCegarLoop]: Abstraction has 38 states and 53 transitions. [2018-11-23 12:17:43,453 INFO L608 BuchiCegarLoop]: Abstraction has 38 states and 53 transitions. [2018-11-23 12:17:43,453 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-23 12:17:43,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 53 transitions. [2018-11-23 12:17:43,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:43,454 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:43,454 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:43,454 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2018-11-23 12:17:43,454 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 12:17:43,454 INFO L794 eck$LassoCheckResult]: Stem: 1177#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; 1178#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1187#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1183#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1184#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1179#L20-3 main_~x~0 := main_~x~0 - 1; 1180#L19-2 main_~y~0 := main_~y~0 - 1; 1175#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1176#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1188#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1198#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1194#L20-3 main_~x~0 := main_~x~0 - 1; 1192#L19-2 main_~y~0 := main_~y~0 - 1; 1193#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1189#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1182#L19-2 [2018-11-23 12:17:43,455 INFO L796 eck$LassoCheckResult]: Loop: 1182#L19-2 main_~y~0 := main_~y~0 - 1; 1173#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1174#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1182#L19-2 [2018-11-23 12:17:43,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2018-11-23 12:17:43,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,463 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,474 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2018-11-23 12:17:43,475 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 12:17:43,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2018-11-23 12:17:43,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,483 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,484 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,523 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 12:17:43,523 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:17:43,523 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 12:17:43,533 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 12:17:43,542 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 12:17:43,543 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:17:43,545 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-23 12:17:43,569 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 12:17:43,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-23 12:17:43,589 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:43,589 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:43,590 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:43,590 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:43,590 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:43,590 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,590 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:43,590 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:43,590 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-23 12:17:43,590 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:43,590 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:43,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,626 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:43,626 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,629 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:43,629 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,650 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:43,650 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:43,688 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:43,690 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:43,690 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:43,690 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:43,690 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:43,690 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:43,690 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,690 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:43,690 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:43,690 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-23 12:17:43,690 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:43,690 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:43,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,696 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,733 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:43,733 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:43,734 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:43,734 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:43,734 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:43,734 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:43,734 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:43,735 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:43,735 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:43,735 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:43,736 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:43,737 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:43,738 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 12:17:43,738 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:43,738 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:43,738 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:43,738 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 12:17:43,738 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:43,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,754 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:43,768 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 12:17:43,768 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 53 transitions. cyclomatic complexity: 21 Second operand 4 states. [2018-11-23 12:17:43,790 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 53 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 118 states and 169 transitions. Complement of second has 7 states. [2018-11-23 12:17:43,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:43,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 12:17:43,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 12:17:43,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-23 12:17:43,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-23 12:17:43,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2018-11-23 12:17:43,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:43,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 169 transitions. [2018-11-23 12:17:43,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:43,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 91 states and 126 transitions. [2018-11-23 12:17:43,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 12:17:43,796 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 12:17:43,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 126 transitions. [2018-11-23 12:17:43,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:43,796 INFO L705 BuchiCegarLoop]: Abstraction has 91 states and 126 transitions. [2018-11-23 12:17:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 126 transitions. [2018-11-23 12:17:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 68. [2018-11-23 12:17:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-23 12:17:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2018-11-23 12:17:43,801 INFO L728 BuchiCegarLoop]: Abstraction has 68 states and 95 transitions. [2018-11-23 12:17:43,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 12:17:43,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 12:17:43,801 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand 5 states. [2018-11-23 12:17:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:17:43,816 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2018-11-23 12:17:43,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 12:17:43,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 131 transitions. [2018-11-23 12:17:43,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:43,819 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 76 states and 105 transitions. [2018-11-23 12:17:43,819 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 12:17:43,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 12:17:43,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 105 transitions. [2018-11-23 12:17:43,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:43,820 INFO L705 BuchiCegarLoop]: Abstraction has 76 states and 105 transitions. [2018-11-23 12:17:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states and 105 transitions. [2018-11-23 12:17:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2018-11-23 12:17:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-23 12:17:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 104 transitions. [2018-11-23 12:17:43,823 INFO L728 BuchiCegarLoop]: Abstraction has 75 states and 104 transitions. [2018-11-23 12:17:43,823 INFO L608 BuchiCegarLoop]: Abstraction has 75 states and 104 transitions. [2018-11-23 12:17:43,824 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-23 12:17:43,824 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 75 states and 104 transitions. [2018-11-23 12:17:43,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:43,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:43,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:43,825 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2018-11-23 12:17:43,825 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 12:17:43,825 INFO L794 eck$LassoCheckResult]: Stem: 1633#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; 1634#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1643#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1639#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1640#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1699#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1642#L20-3 main_~x~0 := main_~x~0 - 1; 1697#L19-2 main_~y~0 := main_~y~0 - 1; 1696#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1679#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1647#L19-2 main_~y~0 := main_~y~0 - 1; 1675#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1673#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1648#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1668#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1667#L20-3 main_~x~0 := main_~x~0 - 1; 1651#L19-2 main_~y~0 := main_~y~0 - 1; 1652#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1646#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1635#L19-2 [2018-11-23 12:17:43,825 INFO L796 eck$LassoCheckResult]: Loop: 1635#L19-2 main_~y~0 := main_~y~0 - 1; 1629#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1630#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1635#L19-2 [2018-11-23 12:17:43,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,826 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2018-11-23 12:17:43,826 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,827 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,838 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2018-11-23 12:17:43,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,839 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:43,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:43,845 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2018-11-23 12:17:43,845 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:43,845 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:43,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,846 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:43,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-23 12:17:43,899 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 12:17:43,899 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/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 [2018-11-23 12:17:43,907 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-23 12:17:43,912 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-23 12:17:43,913 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 12:17:43,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-23 12:17:43,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 12:17:43,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-23 12:17:43,943 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:43,943 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:43,943 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:43,943 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:43,943 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:43,943 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,943 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:43,943 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:43,943 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-23 12:17:43,943 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:43,944 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:43,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:43,995 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:43,996 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:43,998 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:43,998 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:44,013 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:44,014 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,016 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:44,017 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:44,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:44,065 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:44,066 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:44,066 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:44,066 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:44,066 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:44,066 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:44,066 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,066 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:44,067 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:44,067 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-23 12:17:44,067 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:44,067 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:44,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,103 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:44,103 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:44,103 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:44,104 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:44,104 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:44,104 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:44,104 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:44,104 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:44,104 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:44,106 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:44,106 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:44,107 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:44,107 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:44,107 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:44,107 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:44,107 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:44,107 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:44,107 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:44,108 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:44,112 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:44,112 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 12:17:44,112 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:44,112 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:44,112 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:44,113 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 12:17:44,113 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:44,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,128 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:44,139 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 12:17:44,139 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 104 transitions. cyclomatic complexity: 41 Second operand 4 states. [2018-11-23 12:17:44,150 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 104 transitions. cyclomatic complexity: 41. Second operand 4 states. Result 95 states and 131 transitions. Complement of second has 7 states. [2018-11-23 12:17:44,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:44,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 12:17:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 12:17:44,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2018-11-23 12:17:44,150 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,151 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 12:17:44,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:44,179 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 [2018-11-23 12:17:44,179 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 75 states and 104 transitions. cyclomatic complexity: 41 Second operand 4 states. [2018-11-23 12:17:44,206 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 75 states and 104 transitions. cyclomatic complexity: 41. Second operand 4 states. Result 138 states and 184 transitions. Complement of second has 9 states. [2018-11-23 12:17:44,207 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 [2018-11-23 12:17:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 12:17:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-23 12:17:44,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2018-11-23 12:17:44,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2018-11-23 12:17:44,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2018-11-23 12:17:44,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,208 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 184 transitions. [2018-11-23 12:17:44,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:44,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 132 states and 175 transitions. [2018-11-23 12:17:44,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 12:17:44,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 12:17:44,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 175 transitions. [2018-11-23 12:17:44,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:44,211 INFO L705 BuchiCegarLoop]: Abstraction has 132 states and 175 transitions. [2018-11-23 12:17:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states and 175 transitions. [2018-11-23 12:17:44,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2018-11-23 12:17:44,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-11-23 12:17:44,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 155 transitions. [2018-11-23 12:17:44,216 INFO L728 BuchiCegarLoop]: Abstraction has 114 states and 155 transitions. [2018-11-23 12:17:44,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 12:17:44,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-23 12:17:44,217 INFO L87 Difference]: Start difference. First operand 114 states and 155 transitions. Second operand 6 states. [2018-11-23 12:17:44,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 12:17:44,236 INFO L93 Difference]: Finished difference Result 286 states and 368 transitions. [2018-11-23 12:17:44,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 12:17:44,238 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 286 states and 368 transitions. [2018-11-23 12:17:44,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:44,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 286 states to 183 states and 239 transitions. [2018-11-23 12:17:44,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-23 12:17:44,241 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 12:17:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 239 transitions. [2018-11-23 12:17:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 12:17:44,241 INFO L705 BuchiCegarLoop]: Abstraction has 183 states and 239 transitions. [2018-11-23 12:17:44,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states and 239 transitions. [2018-11-23 12:17:44,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2018-11-23 12:17:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-11-23 12:17:44,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2018-11-23 12:17:44,249 INFO L728 BuchiCegarLoop]: Abstraction has 149 states and 201 transitions. [2018-11-23 12:17:44,249 INFO L608 BuchiCegarLoop]: Abstraction has 149 states and 201 transitions. [2018-11-23 12:17:44,249 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-23 12:17:44,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 149 states and 201 transitions. [2018-11-23 12:17:44,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-23 12:17:44,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 12:17:44,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 12:17:44,251 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2018-11-23 12:17:44,251 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 12:17:44,251 INFO L794 eck$LassoCheckResult]: Stem: 2578#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; 2579#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2588#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 2584#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2585#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2626#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 2627#L20-3 main_~x~0 := main_~x~0 - 1; 2625#L19-2 main_~y~0 := main_~y~0 - 1; 2620#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2621#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 2611#L19-2 main_~y~0 := main_~y~0 - 1; 2610#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2607#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 2603#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2604#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2619#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2593#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 2596#L20-3 main_~x~0 := main_~x~0 - 1; 2595#L19-2 main_~y~0 := main_~y~0 - 1; 2594#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2591#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 2580#L19-2 [2018-11-23 12:17:44,255 INFO L796 eck$LassoCheckResult]: Loop: 2580#L19-2 main_~y~0 := main_~y~0 - 1; 2574#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2575#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 2580#L19-2 [2018-11-23 12:17:44,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2018-11-23 12:17:44,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:44,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:44,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:44,256 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:44,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:44,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,264 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2018-11-23 12:17:44,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:44,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:44,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:44,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:44,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:44,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2018-11-23 12:17:44,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 12:17:44,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 12:17:44,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:44,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 12:17:44,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 12:17:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 12:17:44,287 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:44,287 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:44,287 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:44,287 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:44,287 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 12:17:44,287 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,287 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:44,287 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:44,287 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration9_Loop [2018-11-23 12:17:44,287 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:44,287 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:44,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,350 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:44,351 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,360 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:44,360 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:44,364 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:44,364 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_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:44,384 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:44,412 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 12:17:44,412 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,416 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 12:17:44,416 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3cffb859-fbd6-4016-8e14-17c7e2997468/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,436 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 12:17:44,436 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 12:17:44,480 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 12:17:44,481 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 12:17:44,481 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 12:17:44,481 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 12:17:44,481 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 12:17:44,481 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 12:17:44,482 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 12:17:44,482 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 12:17:44,482 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 12:17:44,482 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration9_Loop [2018-11-23 12:17:44,482 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 12:17:44,482 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 12:17:44,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 12:17:44,525 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 12:17:44,525 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 12:17:44,525 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:44,526 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:44,526 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:44,526 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:44,526 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:44,526 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:44,527 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:44,527 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:44,531 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:44,532 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:44,532 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:44,532 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:44,532 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:44,532 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:44,533 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 12:17:44,533 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 12:17:44,535 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 12:17:44,535 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 12:17:44,535 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 12:17:44,535 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 12:17:44,535 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 12:17:44,536 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 12:17:44,536 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 12:17:44,536 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 12:17:44,536 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 12:17:44,537 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 12:17:44,538 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 12:17:44,538 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 12:17:44,538 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 12:17:44,539 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 12:17:44,539 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 12:17:44,539 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-23 12:17:44,539 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 12:17:44,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:44,589 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 12:17:44,590 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 149 states and 201 transitions. cyclomatic complexity: 73 Second operand 4 states. [2018-11-23 12:17:44,602 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 149 states and 201 transitions. cyclomatic complexity: 73. Second operand 4 states. Result 196 states and 265 transitions. Complement of second has 7 states. [2018-11-23 12:17:44,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 12:17:44,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-23 12:17:44,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-23 12:17:44,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,605 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 12:17:44,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:44,639 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 [2018-11-23 12:17:44,639 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 149 states and 201 transitions. cyclomatic complexity: 73 Second operand 4 states. [2018-11-23 12:17:44,662 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 149 states and 201 transitions. cyclomatic complexity: 73. Second operand 4 states. Result 240 states and 316 transitions. Complement of second has 9 states. [2018-11-23 12:17:44,663 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 [2018-11-23 12:17:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 12:17:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-11-23 12:17:44,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-23 12:17:44,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,664 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 12:17:44,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 12:17:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,683 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 12:17:44,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 12:17:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 12:17:44,703 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 [2018-11-23 12:17:44,703 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 149 states and 201 transitions. cyclomatic complexity: 73 Second operand 4 states. [2018-11-23 12:17:44,721 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 149 states and 201 transitions. cyclomatic complexity: 73. Second operand 4 states. Result 253 states and 348 transitions. Complement of second has 8 states. [2018-11-23 12:17:44,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 12:17:44,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 12:17:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-23 12:17:44,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-23 12:17:44,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2018-11-23 12:17:44,723 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,723 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2018-11-23 12:17:44,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 12:17:44,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 253 states and 348 transitions. [2018-11-23 12:17:44,726 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 12:17:44,726 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 253 states to 0 states and 0 transitions. [2018-11-23 12:17:44,726 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 12:17:44,726 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 12:17:44,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 12:17:44,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 12:17:44,727 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:17:44,727 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:17:44,727 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 12:17:44,727 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-23 12:17:44,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 12:17:44,727 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 12:17:44,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 12:17:44,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 12:17:44 BoogieIcfgContainer [2018-11-23 12:17:44,735 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 12:17:44,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 12:17:44,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 12:17:44,736 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 12:17:44,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:17:40" (3/4) ... [2018-11-23 12:17:44,740 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 12:17:44,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 12:17:44,741 INFO L168 Benchmark]: Toolchain (without parser) took 4655.56 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 239.1 MB). Free memory was 958.2 MB in the beginning and 849.0 MB in the end (delta: 109.2 MB). Peak memory consumption was 348.2 MB. Max. memory is 11.5 GB. [2018-11-23 12:17:44,742 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:17:44,743 INFO L168 Benchmark]: CACSL2BoogieTranslator took 148.82 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:17:44,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.44 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 12:17:44,744 INFO L168 Benchmark]: Boogie Preprocessor took 12.17 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:17:44,744 INFO L168 Benchmark]: RCFGBuilder took 194.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -214.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 12:17:44,745 INFO L168 Benchmark]: BuchiAutomizer took 4272.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 62.4 MB). Free memory was 1.2 GB in the beginning and 849.0 MB in the end (delta: 310.2 MB). Peak memory consumption was 372.6 MB. Max. memory is 11.5 GB. [2018-11-23 12:17:44,745 INFO L168 Benchmark]: Witness Printer took 4.92 ms. Allocated memory is still 1.3 GB. Free memory is still 849.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 12:17:44,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 148.82 ms. Allocated memory is still 1.0 GB. Free memory was 958.2 MB in the beginning and 947.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.44 ms. Allocated memory is still 1.0 GB. Free memory was 947.4 MB in the beginning and 944.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.17 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 194.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 176.7 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -214.5 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4272.68 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 62.4 MB). Free memory was 1.2 GB in the beginning and 849.0 MB in the end (delta: 310.2 MB). Peak memory consumption was 372.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.92 ms. Allocated memory is still 1.3 GB. Free memory is still 849.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (3 trivial, 7 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 * y + 2 * m + 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 y and consists of 6 locations. One deterministic module has affine ranking function x and consists of 4 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 * y + 2 * m + 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 4.2s and 10 iterations. TraceHistogramMax:5. Analysis of lassos took 3.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 118 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 149 states and ocurred in iteration 8. Nontrivial modules had stage [5, 2, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 153 SDtfs, 169 SDslu, 91 SDs, 0 SdLazy, 184 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax166 hnf99 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf94 smp100 dnf111 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...