./Ultimate.py --spec ../../sv-benchmarks/c/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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 0.1.23-5842f4b [2018-11-18 14:32:10,532 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:32:10,533 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:32:10,542 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:32:10,542 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:32:10,543 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:32:10,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:32:10,544 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:32:10,545 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:32:10,546 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:32:10,547 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:32:10,547 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:32:10,547 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:32:10,548 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:32:10,549 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:32:10,549 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:32:10,550 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:32:10,551 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:32:10,552 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:32:10,553 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:32:10,554 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:32:10,555 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:32:10,556 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:32:10,557 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:32:10,557 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:32:10,557 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:32:10,558 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:32:10,559 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:32:10,559 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:32:10,560 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:32:10,560 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:32:10,560 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:32:10,561 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:32:10,561 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:32:10,561 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:32:10,562 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:32:10,562 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-18 14:32:10,570 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:32:10,570 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:32:10,571 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:32:10,571 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:32:10,571 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:32:10,571 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 14:32:10,571 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 14:32:10,572 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 14:32:10,572 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 14:32:10,572 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 14:32:10,572 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 14:32:10,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:32:10,572 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 14:32:10,573 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:32:10,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:32:10,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 14:32:10,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 14:32:10,573 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 14:32:10,573 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:32:10,573 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 14:32:10,574 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:32:10,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 14:32:10,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:32:10,574 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:32:10,574 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 14:32:10,574 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:32:10,575 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:32:10,575 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 14:32:10,575 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 14:32:10,576 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:10,598 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:32:10,607 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:32:10,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:32:10,610 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:32:10,611 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:32:10,611 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-18 14:32:10,651 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/data/ac34b1123/8f5d398ee05546b5922f1b486c9498be/FLAG01df47037 [2018-11-18 14:32:10,942 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:32:10,942 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-18 14:32:10,946 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/data/ac34b1123/8f5d398ee05546b5922f1b486c9498be/FLAG01df47037 [2018-11-18 14:32:10,955 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/data/ac34b1123/8f5d398ee05546b5922f1b486c9498be [2018-11-18 14:32:10,958 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:32:10,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 14:32:10,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:32:10,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:32:10,962 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:32:10,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:10" (1/1) ... [2018-11-18 14:32:10,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88e9939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:10, skipping insertion in model container [2018-11-18 14:32:10,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:32:10" (1/1) ... [2018-11-18 14:32:10,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:32:10,983 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:32:11,080 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:32:11,082 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:32:11,090 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:32:11,098 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:32:11,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11 WrapperNode [2018-11-18 14:32:11,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:32:11,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 14:32:11,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 14:32:11,099 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 14:32:11,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,117 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 14:32:11,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:32:11,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:32:11,117 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:32:11,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... [2018-11-18 14:32:11,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:32:11,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:32:11,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:32:11,128 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:32:11,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:32:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:32:11,305 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:32:11,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:11 BoogieIcfgContainer [2018-11-18 14:32:11,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:32:11,306 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 14:32:11,306 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 14:32:11,318 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 14:32:11,319 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:32:11,319 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 02:32:10" (1/3) ... [2018-11-18 14:32:11,320 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@794d4aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 02:32:11, skipping insertion in model container [2018-11-18 14:32:11,320 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:32:11,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:32:11" (2/3) ... [2018-11-18 14:32:11,320 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@794d4aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 02:32:11, skipping insertion in model container [2018-11-18 14:32:11,320 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 14:32:11,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:11" (3/3) ... [2018-11-18 14:32:11,322 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c [2018-11-18 14:32:11,369 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:32:11,370 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 14:32:11,370 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 14:32:11,370 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 14:32:11,370 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:32:11,370 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:32:11,371 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 14:32:11,371 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:32:11,371 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 14:32:11,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-11-18 14:32:11,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:11,398 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:11,398 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:11,403 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 14:32:11,403 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 14:32:11,403 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 14:32:11,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-11-18 14:32:11,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:11,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:11,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:11,404 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 14:32:11,405 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 14:32:11,411 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 3#L18-3true [2018-11-18 14:32:11,412 INFO L796 eck$LassoCheckResult]: Loop: 3#L18-3true assume true; 6#L18-1true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 9#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 8#L19-2true main_~y~0 := main_~y~0 - 1; 3#L18-3true [2018-11-18 14:32:11,416 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:11,417 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 14:32:11,418 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:11,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:11,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:11,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:11,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:11,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:11,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1114793, now seen corresponding path program 1 times [2018-11-18 14:32:11,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:11,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:11,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:11,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:11,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:11,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:11,491 INFO L82 PathProgramCache]: Analyzing trace with hash 889541995, now seen corresponding path program 1 times [2018-11-18 14:32:11,491 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:11,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:11,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:11,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:11,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:11,544 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:11,545 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:11,545 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:11,546 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:11,546 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:11,546 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:11,546 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:11,546 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:11,546 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 14:32:11,546 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:11,546 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:11,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,680 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:11,681 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:11,689 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:11,689 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:11,707 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:11,708 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:11,712 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:11,712 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:11,738 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:11,738 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:11,742 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:11,742 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:11,767 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:11,767 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:11,784 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:11,785 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:11,785 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:11,785 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:11,785 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:11,785 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:11,785 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:11,785 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:11,785 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:11,785 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-18 14:32:11,785 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:11,785 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:11,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:11,846 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:11,850 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:11,851 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:11,852 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:11,852 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:11,852 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:11,853 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:11,856 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:11,856 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:11,861 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:11,862 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:11,862 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:11,862 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:11,863 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:11,863 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:11,864 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:11,864 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:11,870 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:11,871 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:11,871 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:11,871 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:11,872 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:11,872 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:11,872 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:11,873 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:11,873 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:11,876 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:11,879 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:11,880 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 14:32:11,881 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:11,881 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:11,881 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:11,882 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-18 14:32:11,883 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:11,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:11,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:11,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:11,928 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 [2018-11-18 14:32:11,929 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2018-11-18 14:32:11,964 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 8 states. [2018-11-18 14:32:11,965 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 [2018-11-18 14:32:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:32:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 31 transitions. [2018-11-18 14:32:11,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-18 14:32:11,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:11,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-18 14:32:11,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:11,969 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 31 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-18 14:32:11,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:11,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 61 transitions. [2018-11-18 14:32:11,972 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:11,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 21 states and 27 transitions. [2018-11-18 14:32:11,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-18 14:32:11,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-18 14:32:11,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2018-11-18 14:32:11,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:11,976 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2018-11-18 14:32:11,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2018-11-18 14:32:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-18 14:32:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-18 14:32:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2018-11-18 14:32:11,993 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2018-11-18 14:32:11,993 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2018-11-18 14:32:11,993 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 14:32:11,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2018-11-18 14:32:11,994 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:11,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:11,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:11,994 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:11,994 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 14:32:11,994 INFO L794 eck$LassoCheckResult]: Stem: 112#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 110#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 111#L18-3 assume true; 109#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 117#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 119#L20-3 assume true; 120#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 123#L20-3 [2018-11-18 14:32:11,994 INFO L796 eck$LassoCheckResult]: Loop: 123#L20-3 assume true; 124#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 123#L20-3 [2018-11-18 14:32:11,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:11,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1805982284, now seen corresponding path program 1 times [2018-11-18 14:32:11,995 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:11,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:11,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:11,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:11,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1575, now seen corresponding path program 1 times [2018-11-18 14:32:12,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:12,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash 382187954, now seen corresponding path program 2 times [2018-11-18 14:32:12,012 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:12,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,049 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:12,049 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:12,049 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:12,049 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:12,049 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:12,049 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,049 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:12,049 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:12,050 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 14:32:12,050 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:12,050 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:12,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,098 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:12,098 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,105 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:12,105 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:12,120 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:12,120 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,122 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:12,122 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:12,137 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:12,137 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,140 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:12,140 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:12,143 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:12,143 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,158 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:12,158 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:12,175 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:12,175 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:12,286 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:12,287 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:12,287 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:12,288 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:12,288 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:12,288 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:12,288 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,288 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:12,288 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:12,288 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-18 14:32:12,288 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:12,288 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:12,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,327 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:12,327 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:12,328 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 [2018-11-18 14:32:12,328 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:12,329 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:12,329 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:12,329 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:12,330 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:12,330 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:12,332 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:12,333 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:12,333 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:12,333 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:12,333 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:12,333 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:12,334 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:12,335 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:12,338 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:12,338 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:12,338 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:12,339 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:12,339 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:12,339 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 14:32:12,339 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:12,340 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-18 14:32:12,340 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:12,343 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:12,343 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:12,344 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:12,344 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:12,344 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:12,344 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:12,344 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:12,345 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:12,345 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:12,348 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:12,351 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:12,351 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 14:32:12,351 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:12,352 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:12,352 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:12,352 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 [] [2018-11-18 14:32:12,352 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:12,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:12,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:12,377 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:12,377 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 [2018-11-18 14:32:12,377 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 27 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-18 14:32:12,386 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 27 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 36 states and 49 transitions. Complement of second has 6 states. [2018-11-18 14:32:12,387 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 [2018-11-18 14:32:12,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 14:32:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2018-11-18 14:32:12,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-18 14:32:12,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:12,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 9 letters. Loop has 2 letters. [2018-11-18 14:32:12,388 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:12,388 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 14:32:12,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:12,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 49 transitions. [2018-11-18 14:32:12,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:12,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 27 states and 35 transitions. [2018-11-18 14:32:12,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-18 14:32:12,390 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-18 14:32:12,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2018-11-18 14:32:12,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:12,391 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 35 transitions. [2018-11-18 14:32:12,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2018-11-18 14:32:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-11-18 14:32:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 14:32:12,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2018-11-18 14:32:12,393 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2018-11-18 14:32:12,393 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2018-11-18 14:32:12,393 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 14:32:12,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 33 transitions. [2018-11-18 14:32:12,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:12,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:12,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:12,394 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:12,394 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-18 14:32:12,394 INFO L794 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 215#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 216#L18-3 assume true; 214#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 226#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 228#L20-3 assume true; 230#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 222#L20-3 assume true; 224#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 217#L20-4 [2018-11-18 14:32:12,394 INFO L796 eck$LassoCheckResult]: Loop: 217#L20-4 main_~x~0 := main_~x~0 - 1; 218#L19-2 main_~y~0 := main_~y~0 - 1; 210#L18-3 assume true; 211#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 232#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 233#L20-3 assume !true; 217#L20-4 [2018-11-18 14:32:12,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,395 INFO L82 PathProgramCache]: Analyzing trace with hash 382187952, now seen corresponding path program 1 times [2018-11-18 14:32:12,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:12,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1748416023, now seen corresponding path program 1 times [2018-11-18 14:32:12,403 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,403 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:12,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:12,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:32:12,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-11-18 14:32:12,420 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-18 14:32:12,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:32:12,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:32:12,423 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. cyclomatic complexity: 11 Second operand 2 states. [2018-11-18 14:32:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:12,425 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2018-11-18 14:32:12,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:32:12,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 32 transitions. [2018-11-18 14:32:12,426 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:12,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 25 states and 32 transitions. [2018-11-18 14:32:12,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-18 14:32:12,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-18 14:32:12,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 32 transitions. [2018-11-18 14:32:12,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:12,428 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-11-18 14:32:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 32 transitions. [2018-11-18 14:32:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-18 14:32:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-18 14:32:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2018-11-18 14:32:12,429 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-11-18 14:32:12,430 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 32 transitions. [2018-11-18 14:32:12,430 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 14:32:12,430 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 32 transitions. [2018-11-18 14:32:12,430 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:12,430 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:12,430 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:12,431 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:12,431 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:12,431 INFO L794 eck$LassoCheckResult]: Stem: 276#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 270#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 271#L18-3 assume true; 269#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 286#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 287#L20-3 assume true; 284#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 285#L20-3 assume true; 280#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 272#L20-4 [2018-11-18 14:32:12,431 INFO L796 eck$LassoCheckResult]: Loop: 272#L20-4 main_~x~0 := main_~x~0 - 1; 273#L19-2 main_~y~0 := main_~y~0 - 1; 265#L18-3 assume true; 266#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 282#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 277#L20-3 assume true; 278#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 272#L20-4 [2018-11-18 14:32:12,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,432 INFO L82 PathProgramCache]: Analyzing trace with hash 382187952, now seen corresponding path program 2 times [2018-11-18 14:32:12,432 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:12,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1633678360, now seen corresponding path program 1 times [2018-11-18 14:32:12,440 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,441 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:12,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1716772697, now seen corresponding path program 1 times [2018-11-18 14:32:12,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:12,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,483 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:12,483 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:12,484 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:12,484 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:12,484 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:12,484 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,484 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:12,484 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:12,484 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 14:32:12,484 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:12,484 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:12,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,605 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:12,605 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,613 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:12,613 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:12,639 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:12,639 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,642 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:12,643 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,659 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:12,660 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:12,744 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:12,745 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:12,745 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:12,745 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:12,745 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:12,745 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:12,746 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,746 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:12,746 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:12,746 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-18 14:32:12,746 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:12,746 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:12,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,820 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:12,821 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:12,821 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:12,822 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:12,822 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:12,822 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:12,822 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:12,823 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:12,823 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:12,827 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:12,827 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:12,828 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:12,828 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:12,828 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:12,828 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 14:32:12,828 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:12,829 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-18 14:32:12,829 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:12,834 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:12,837 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:12,837 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:32:12,837 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:12,837 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:12,838 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:12,838 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 14:32:12,838 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:12,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:12,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:12,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:12,885 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 14:32:12,885 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 32 transitions. cyclomatic complexity: 10 Second operand 5 states. [2018-11-18 14:32:12,912 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 32 transitions. cyclomatic complexity: 10. Second operand 5 states. Result 64 states and 81 transitions. Complement of second has 7 states. [2018-11-18 14:32:12,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 14:32:12,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-11-18 14:32:12,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 7 letters. [2018-11-18 14:32:12,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:12,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 16 letters. Loop has 7 letters. [2018-11-18 14:32:12,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:12,914 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 14 letters. [2018-11-18 14:32:12,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:12,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 81 transitions. [2018-11-18 14:32:12,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:12,917 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 50 states and 63 transitions. [2018-11-18 14:32:12,917 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-11-18 14:32:12,917 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-11-18 14:32:12,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 63 transitions. [2018-11-18 14:32:12,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:12,918 INFO L705 BuchiCegarLoop]: Abstraction has 50 states and 63 transitions. [2018-11-18 14:32:12,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 63 transitions. [2018-11-18 14:32:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2018-11-18 14:32:12,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 14:32:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2018-11-18 14:32:12,921 INFO L728 BuchiCegarLoop]: Abstraction has 47 states and 60 transitions. [2018-11-18 14:32:12,921 INFO L608 BuchiCegarLoop]: Abstraction has 47 states and 60 transitions. [2018-11-18 14:32:12,921 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 14:32:12,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 60 transitions. [2018-11-18 14:32:12,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-18 14:32:12,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:12,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:12,922 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-18 14:32:12,922 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:12,923 INFO L794 eck$LassoCheckResult]: Stem: 436#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 432#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 427#L18-3 assume true; 428#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 443#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 439#L20-3 assume true; 440#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 449#L20-4 main_~x~0 := main_~x~0 - 1; 464#L19-2 main_~y~0 := main_~y~0 - 1; 461#L18-3 assume true; 441#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 442#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 446#L20-3 assume true; 473#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 472#L20-3 assume true; 454#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 450#L20-4 [2018-11-18 14:32:12,923 INFO L796 eck$LassoCheckResult]: Loop: 450#L20-4 main_~x~0 := main_~x~0 - 1; 444#L19-2 main_~y~0 := main_~y~0 - 1; 445#L18-3 assume true; 453#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 451#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 448#L20-3 assume true; 471#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 450#L20-4 [2018-11-18 14:32:12,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1932927909, now seen corresponding path program 2 times [2018-11-18 14:32:12,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:12,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 14:32:12,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:32:12,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 14:32:12,944 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 14:32:12,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:12,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1633678360, now seen corresponding path program 2 times [2018-11-18 14:32:12,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:12,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:12,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:12,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:12,969 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:12,969 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:12,970 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:12,970 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:12,970 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:12,970 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:12,970 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:12,970 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:12,970 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 14:32:12,970 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:12,970 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:12,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:12,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,030 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:13,030 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:13,033 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:13,033 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:13,036 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:13,036 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,055 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:13,055 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,071 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:13,071 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:13,155 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:13,157 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:13,157 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:13,157 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:13,157 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:13,157 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:13,157 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,157 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:13,157 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:13,158 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-18 14:32:13,158 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:13,158 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:13,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,219 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:13,219 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:13,219 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:13,220 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:13,220 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:13,220 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:13,220 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 14:32:13,220 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:13,221 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-18 14:32:13,221 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:13,222 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:13,223 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:13,223 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:13,223 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:13,223 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:13,224 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-18 14:32:13,224 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:13,224 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-18 14:32:13,224 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:13,227 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:13,229 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:13,229 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:32:13,229 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:13,229 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:13,230 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:13,230 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 14:32:13,230 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:13,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:13,259 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 14:32:13,259 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 60 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 14:32:13,295 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 60 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 68 states and 85 transitions. Complement of second has 7 states. [2018-11-18 14:32:13,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 14:32:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-11-18 14:32:13,296 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 16 letters. Loop has 7 letters. [2018-11-18 14:32:13,296 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,296 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:32:13,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:13,322 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 [2018-11-18 14:32:13,322 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 60 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-18 14:32:13,339 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 60 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 98 states and 121 transitions. Complement of second has 9 states. [2018-11-18 14:32:13,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 14:32:13,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-18 14:32:13,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 16 letters. Loop has 7 letters. [2018-11-18 14:32:13,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 23 letters. Loop has 7 letters. [2018-11-18 14:32:13,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 16 letters. Loop has 14 letters. [2018-11-18 14:32:13,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 121 transitions. [2018-11-18 14:32:13,343 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2018-11-18 14:32:13,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 93 states and 116 transitions. [2018-11-18 14:32:13,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2018-11-18 14:32:13,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2018-11-18 14:32:13,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 116 transitions. [2018-11-18 14:32:13,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:13,344 INFO L705 BuchiCegarLoop]: Abstraction has 93 states and 116 transitions. [2018-11-18 14:32:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states and 116 transitions. [2018-11-18 14:32:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2018-11-18 14:32:13,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-11-18 14:32:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2018-11-18 14:32:13,347 INFO L728 BuchiCegarLoop]: Abstraction has 77 states and 100 transitions. [2018-11-18 14:32:13,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 14:32:13,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 14:32:13,348 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand 4 states. [2018-11-18 14:32:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:13,357 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2018-11-18 14:32:13,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 14:32:13,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 82 transitions. [2018-11-18 14:32:13,358 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-18 14:32:13,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 51 states and 65 transitions. [2018-11-18 14:32:13,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-11-18 14:32:13,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-18 14:32:13,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 65 transitions. [2018-11-18 14:32:13,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:13,359 INFO L705 BuchiCegarLoop]: Abstraction has 51 states and 65 transitions. [2018-11-18 14:32:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 65 transitions. [2018-11-18 14:32:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-18 14:32:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 14:32:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2018-11-18 14:32:13,360 INFO L728 BuchiCegarLoop]: Abstraction has 51 states and 65 transitions. [2018-11-18 14:32:13,361 INFO L608 BuchiCegarLoop]: Abstraction has 51 states and 65 transitions. [2018-11-18 14:32:13,361 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 14:32:13,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 65 transitions. [2018-11-18 14:32:13,361 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2018-11-18 14:32:13,361 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:13,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:13,361 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:13,361 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:13,362 INFO L794 eck$LassoCheckResult]: Stem: 970#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 965#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 961#L18-3 assume true; 962#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 971#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 979#L20-3 assume true; 996#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 994#L20-3 assume true; 990#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 966#L20-4 main_~x~0 := main_~x~0 - 1; 968#L19-2 main_~y~0 := main_~y~0 - 1; 963#L18-3 assume true; 964#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 972#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 980#L20-3 [2018-11-18 14:32:13,362 INFO L796 eck$LassoCheckResult]: Loop: 980#L20-3 assume true; 981#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 973#L20-3 assume true; 974#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 984#L20-4 main_~x~0 := main_~x~0 - 1; 977#L19-2 main_~y~0 := main_~y~0 - 1; 978#L18-3 assume true; 1005#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1006#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 980#L20-3 [2018-11-18 14:32:13,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,362 INFO L82 PathProgramCache]: Analyzing trace with hash -333408715, now seen corresponding path program 3 times [2018-11-18 14:32:13,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,363 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:13,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,368 INFO L82 PathProgramCache]: Analyzing trace with hash 811118074, now seen corresponding path program 1 times [2018-11-18 14:32:13,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:13,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1888759226, now seen corresponding path program 4 times [2018-11-18 14:32:13,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:13,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,418 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:13,418 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:13,418 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:13,418 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:13,418 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:13,418 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,418 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:13,418 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:13,418 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 14:32:13,418 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:13,418 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:13,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,461 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:13,461 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,468 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:13,468 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,486 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:13,486 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:13,519 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:13,520 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:13,520 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:13,520 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:13,521 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:13,521 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:13,521 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,521 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:13,521 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:13,521 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-18 14:32:13,521 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:13,521 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:13,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,564 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:13,564 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:13,564 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:13,565 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:13,565 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:13,565 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:13,565 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:13,565 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:13,565 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:13,565 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:13,566 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:13,567 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:13,567 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:32:13,567 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:13,567 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:13,567 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:13,568 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-18 14:32:13,568 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:13,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 14:32:13,594 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 14:32:13,594 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 65 transitions. cyclomatic complexity: 20 Second operand 5 states. [2018-11-18 14:32:13,603 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 65 transitions. cyclomatic complexity: 20. Second operand 5 states. Result 141 states and 182 transitions. Complement of second has 6 states. [2018-11-18 14:32:13,604 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 [2018-11-18 14:32:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-18 14:32:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-11-18 14:32:13,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 14 letters. Loop has 9 letters. [2018-11-18 14:32:13,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 9 letters. [2018-11-18 14:32:13,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 14 letters. Loop has 18 letters. [2018-11-18 14:32:13,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 141 states and 182 transitions. [2018-11-18 14:32:13,606 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-11-18 14:32:13,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 141 states to 94 states and 123 transitions. [2018-11-18 14:32:13,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-11-18 14:32:13,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-18 14:32:13,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 123 transitions. [2018-11-18 14:32:13,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:13,608 INFO L705 BuchiCegarLoop]: Abstraction has 94 states and 123 transitions. [2018-11-18 14:32:13,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 123 transitions. [2018-11-18 14:32:13,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 65. [2018-11-18 14:32:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-11-18 14:32:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 87 transitions. [2018-11-18 14:32:13,611 INFO L728 BuchiCegarLoop]: Abstraction has 65 states and 87 transitions. [2018-11-18 14:32:13,611 INFO L608 BuchiCegarLoop]: Abstraction has 65 states and 87 transitions. [2018-11-18 14:32:13,611 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 14:32:13,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 65 states and 87 transitions. [2018-11-18 14:32:13,612 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-18 14:32:13,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:13,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:13,612 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-18 14:32:13,612 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-18 14:32:13,612 INFO L794 eck$LassoCheckResult]: Stem: 1254#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1250#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1251#L18-3 assume true; 1269#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1268#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1255#L20-3 assume true; 1256#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1265#L20-3 assume true; 1285#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1304#L20-4 main_~x~0 := main_~x~0 - 1; 1305#L19-2 main_~y~0 := main_~y~0 - 1; 1310#L18-3 assume true; 1309#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1308#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1264#L20-3 [2018-11-18 14:32:13,612 INFO L796 eck$LassoCheckResult]: Loop: 1264#L20-3 assume true; 1263#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1264#L20-3 [2018-11-18 14:32:13,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,613 INFO L82 PathProgramCache]: Analyzing trace with hash -333408715, now seen corresponding path program 5 times [2018-11-18 14:32:13,613 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:13,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1575, now seen corresponding path program 2 times [2018-11-18 14:32:13,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:13,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1716772699, now seen corresponding path program 6 times [2018-11-18 14:32:13,624 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,625 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:13,625 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,652 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:13,653 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:13,653 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:13,653 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:13,653 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:13,653 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,653 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:13,653 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:13,653 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-18 14:32:13,653 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:13,653 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:13,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,681 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:13,681 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,692 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:13,692 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:13,716 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:13,716 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,719 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:13,719 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:13,734 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:13,734 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,737 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:13,737 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,764 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:13,764 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:13,866 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:13,868 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:13,868 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:13,868 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:13,868 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:13,868 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:13,868 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:13,868 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:13,868 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:13,868 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration7_Loop [2018-11-18 14:32:13,868 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:13,868 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:13,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:13,893 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:13,893 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:13,894 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:13,894 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:13,894 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:13,894 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:13,894 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:13,895 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:13,895 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:13,896 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:13,896 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:13,896 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:13,897 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:13,897 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:13,897 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:13,897 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:13,897 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:13,897 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:13,898 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:13,899 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:13,899 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 14:32:13,899 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:13,899 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:13,899 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:13,899 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 [] [2018-11-18 14:32:13,899 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:13,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:13,917 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 [2018-11-18 14:32:13,917 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 87 transitions. cyclomatic complexity: 30 Second operand 3 states. [2018-11-18 14:32:13,923 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 87 transitions. cyclomatic complexity: 30. Second operand 3 states. Result 74 states and 98 transitions. Complement of second has 5 states. [2018-11-18 14:32:13,924 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 [2018-11-18 14:32:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 14:32:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 14:32:13,924 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2018-11-18 14:32:13,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,925 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:32:13,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,936 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,939 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:13,940 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 [2018-11-18 14:32:13,940 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 87 transitions. cyclomatic complexity: 30 Second operand 3 states. [2018-11-18 14:32:13,950 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 87 transitions. cyclomatic complexity: 30. Second operand 3 states. Result 74 states and 98 transitions. Complement of second has 5 states. [2018-11-18 14:32:13,951 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 [2018-11-18 14:32:13,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 14:32:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 14:32:13,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2018-11-18 14:32:13,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,951 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:32:13,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:13,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:13,967 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 [2018-11-18 14:32:13,967 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 65 states and 87 transitions. cyclomatic complexity: 30 Second operand 3 states. [2018-11-18 14:32:13,972 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 65 states and 87 transitions. cyclomatic complexity: 30. Second operand 3 states. Result 92 states and 118 transitions. Complement of second has 4 states. [2018-11-18 14:32:13,972 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 [2018-11-18 14:32:13,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 14:32:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-11-18 14:32:13,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 2 letters. [2018-11-18 14:32:13,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 16 letters. Loop has 2 letters. [2018-11-18 14:32:13,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 14:32:13,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:13,973 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 92 states and 118 transitions. [2018-11-18 14:32:13,974 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:13,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 92 states to 65 states and 81 transitions. [2018-11-18 14:32:13,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 14:32:13,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 14:32:13,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 81 transitions. [2018-11-18 14:32:13,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:13,974 INFO L705 BuchiCegarLoop]: Abstraction has 65 states and 81 transitions. [2018-11-18 14:32:13,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 81 transitions. [2018-11-18 14:32:13,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2018-11-18 14:32:13,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-18 14:32:13,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2018-11-18 14:32:13,976 INFO L728 BuchiCegarLoop]: Abstraction has 56 states and 71 transitions. [2018-11-18 14:32:13,976 INFO L608 BuchiCegarLoop]: Abstraction has 56 states and 71 transitions. [2018-11-18 14:32:13,977 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 14:32:13,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 71 transitions. [2018-11-18 14:32:13,977 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:13,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:13,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:13,977 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1] [2018-11-18 14:32:13,977 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 14:32:13,977 INFO L794 eck$LassoCheckResult]: Stem: 1732#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1728#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1729#L18-3 assume true; 1745#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1743#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1733#L20-3 assume true; 1734#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1759#L20-3 assume true; 1752#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-4 main_~x~0 := main_~x~0 - 1; 1740#L19-2 main_~y~0 := main_~y~0 - 1; 1726#L18-3 assume true; 1727#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-3 assume true; 1736#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1757#L20-3 assume true; 1758#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1750#L20-4 main_~x~0 := main_~x~0 - 1; 1751#L19-2 main_~y~0 := main_~y~0 - 1; 1775#L18-3 assume true; 1774#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1744#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1739#L19-2 [2018-11-18 14:32:13,978 INFO L796 eck$LassoCheckResult]: Loop: 1739#L19-2 main_~y~0 := main_~y~0 - 1; 1724#L18-3 assume true; 1725#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1737#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1739#L19-2 [2018-11-18 14:32:13,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1888759210, now seen corresponding path program 1 times [2018-11-18 14:32:13,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,978 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,978 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:13,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1912793, now seen corresponding path program 2 times [2018-11-18 14:32:13,987 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:32:13,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:13,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:13,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1979568046, now seen corresponding path program 2 times [2018-11-18 14:32:13,990 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:13,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:13,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,991 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:13,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 14:32:14,021 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:14,021 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,035 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 14:32:14,041 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 14:32:14,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:32:14,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 14:32:14,066 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:32:14,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-18 14:32:14,074 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:14,074 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:14,074 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:14,074 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:14,074 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:14,074 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,074 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:14,074 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:14,074 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-18 14:32:14,074 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:14,074 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:14,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,113 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:14,113 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,115 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:14,115 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,131 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:14,132 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:14,161 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:14,162 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:14,162 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:14,163 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:14,163 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:14,163 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:14,163 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,163 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:14,163 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:14,163 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration8_Loop [2018-11-18 14:32:14,163 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:14,163 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:14,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,196 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:14,196 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:14,196 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:14,197 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:14,197 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:14,197 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:14,197 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:14,197 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:14,197 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:14,197 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:14,200 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:14,200 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:14,201 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:32:14,201 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:14,201 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:14,201 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:14,201 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 14:32:14,201 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:14,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,214 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:14,223 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 14:32:14,223 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 71 transitions. cyclomatic complexity: 21 Second operand 4 states. [2018-11-18 14:32:14,233 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 71 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 173 states and 226 transitions. Complement of second has 7 states. [2018-11-18 14:32:14,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:32:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-11-18 14:32:14,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2018-11-18 14:32:14,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:14,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 27 letters. Loop has 4 letters. [2018-11-18 14:32:14,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:14,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 8 letters. [2018-11-18 14:32:14,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:14,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 173 states and 226 transitions. [2018-11-18 14:32:14,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:14,238 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 173 states to 132 states and 167 transitions. [2018-11-18 14:32:14,238 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 14:32:14,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 14:32:14,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 167 transitions. [2018-11-18 14:32:14,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:14,238 INFO L705 BuchiCegarLoop]: Abstraction has 132 states and 167 transitions. [2018-11-18 14:32:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states and 167 transitions. [2018-11-18 14:32:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2018-11-18 14:32:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-18 14:32:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2018-11-18 14:32:14,243 INFO L728 BuchiCegarLoop]: Abstraction has 100 states and 127 transitions. [2018-11-18 14:32:14,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 14:32:14,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 14:32:14,244 INFO L87 Difference]: Start difference. First operand 100 states and 127 transitions. Second operand 5 states. [2018-11-18 14:32:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:14,259 INFO L93 Difference]: Finished difference Result 149 states and 181 transitions. [2018-11-18 14:32:14,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 14:32:14,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 181 transitions. [2018-11-18 14:32:14,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:14,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 115 states and 144 transitions. [2018-11-18 14:32:14,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 14:32:14,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 14:32:14,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2018-11-18 14:32:14,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:14,262 INFO L705 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2018-11-18 14:32:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2018-11-18 14:32:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2018-11-18 14:32:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-11-18 14:32:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2018-11-18 14:32:14,266 INFO L728 BuchiCegarLoop]: Abstraction has 111 states and 140 transitions. [2018-11-18 14:32:14,266 INFO L608 BuchiCegarLoop]: Abstraction has 111 states and 140 transitions. [2018-11-18 14:32:14,266 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-18 14:32:14,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 140 transitions. [2018-11-18 14:32:14,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:14,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:14,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:14,268 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1] [2018-11-18 14:32:14,268 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 14:32:14,268 INFO L794 eck$LassoCheckResult]: Stem: 2397#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2393#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 2394#L18-3 assume true; 2413#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2408#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 2398#L20-3 assume true; 2399#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2400#L20-3 assume true; 2401#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2407#L20-3 assume true; 2494#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 2499#L20-4 main_~x~0 := main_~x~0 - 1; 2456#L19-2 main_~y~0 := main_~y~0 - 1; 2454#L18-3 assume true; 2452#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2447#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 2412#L19-2 main_~y~0 := main_~y~0 - 1; 2443#L18-3 assume true; 2441#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2437#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 2411#L20-3 assume true; 2426#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 2427#L20-3 assume true; 2422#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 2420#L20-4 main_~x~0 := main_~x~0 - 1; 2421#L19-2 main_~y~0 := main_~y~0 - 1; 2416#L18-3 assume true; 2417#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2410#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 2403#L19-2 [2018-11-18 14:32:14,268 INFO L796 eck$LassoCheckResult]: Loop: 2403#L19-2 main_~y~0 := main_~y~0 - 1; 2389#L18-3 assume true; 2390#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 2405#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 2403#L19-2 [2018-11-18 14:32:14,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,268 INFO L82 PathProgramCache]: Analyzing trace with hash -595826716, now seen corresponding path program 3 times [2018-11-18 14:32:14,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:14,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:14,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,269 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:14,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1912793, now seen corresponding path program 3 times [2018-11-18 14:32:14,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:14,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:14,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,282 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:14,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,284 INFO L82 PathProgramCache]: Analyzing trace with hash -158536132, now seen corresponding path program 4 times [2018-11-18 14:32:14,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:14,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:14,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:14,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 14:32:14,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 14:32:14,322 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,343 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 14:32:14,353 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-18 14:32:14,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 14:32:14,354 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,361 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-18 14:32:14,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 14:32:14,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-18 14:32:14,397 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:14,397 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:14,397 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:14,397 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:14,397 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:14,397 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,397 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:14,397 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:14,397 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration9_Loop [2018-11-18 14:32:14,397 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:14,397 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:14,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,431 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:14,431 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,434 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:14,434 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:14,449 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:14,449 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,452 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:14,452 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:14,469 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:14,499 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:14,500 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:14,500 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:14,500 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:14,500 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:14,500 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:14,500 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,500 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:14,500 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:14,500 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration9_Loop [2018-11-18 14:32:14,501 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:14,501 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:14,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,529 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:14,529 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:14,529 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:14,529 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:14,530 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:14,530 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:14,530 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:14,530 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:14,530 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:14,532 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:14,532 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 [2018-11-18 14:32:14,532 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:14,533 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:14,533 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:14,533 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:14,533 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:14,533 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:14,533 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:14,534 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:14,534 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:14,534 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:32:14,535 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:14,535 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:14,535 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:14,535 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 14:32:14,535 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:14,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:14,579 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 14:32:14,579 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 140 transitions. cyclomatic complexity: 41 Second operand 4 states. [2018-11-18 14:32:14,592 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 140 transitions. cyclomatic complexity: 41. Second operand 4 states. Result 143 states and 179 transitions. Complement of second has 7 states. [2018-11-18 14:32:14,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:14,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:32:14,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-11-18 14:32:14,594 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 29 letters. Loop has 4 letters. [2018-11-18 14:32:14,594 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:14,594 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:32:14,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:14,623 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 [2018-11-18 14:32:14,624 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 140 transitions. cyclomatic complexity: 41 Second operand 4 states. [2018-11-18 14:32:14,646 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 140 transitions. cyclomatic complexity: 41. Second operand 4 states. Result 200 states and 247 transitions. Complement of second has 9 states. [2018-11-18 14:32:14,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:14,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:32:14,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2018-11-18 14:32:14,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 29 letters. Loop has 4 letters. [2018-11-18 14:32:14,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:14,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 4 letters. [2018-11-18 14:32:14,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:14,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 29 letters. Loop has 8 letters. [2018-11-18 14:32:14,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:14,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 247 transitions. [2018-11-18 14:32:14,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:14,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 191 states and 234 transitions. [2018-11-18 14:32:14,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 14:32:14,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 14:32:14,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 191 states and 234 transitions. [2018-11-18 14:32:14,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:14,651 INFO L705 BuchiCegarLoop]: Abstraction has 191 states and 234 transitions. [2018-11-18 14:32:14,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states and 234 transitions. [2018-11-18 14:32:14,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 166. [2018-11-18 14:32:14,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2018-11-18 14:32:14,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 207 transitions. [2018-11-18 14:32:14,656 INFO L728 BuchiCegarLoop]: Abstraction has 166 states and 207 transitions. [2018-11-18 14:32:14,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 14:32:14,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-18 14:32:14,656 INFO L87 Difference]: Start difference. First operand 166 states and 207 transitions. Second operand 6 states. [2018-11-18 14:32:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:32:14,707 INFO L93 Difference]: Finished difference Result 424 states and 506 transitions. [2018-11-18 14:32:14,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 14:32:14,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 424 states and 506 transitions. [2018-11-18 14:32:14,710 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:14,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 424 states to 272 states and 328 transitions. [2018-11-18 14:32:14,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 14:32:14,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 14:32:14,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 328 transitions. [2018-11-18 14:32:14,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 14:32:14,711 INFO L705 BuchiCegarLoop]: Abstraction has 272 states and 328 transitions. [2018-11-18 14:32:14,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 328 transitions. [2018-11-18 14:32:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 219. [2018-11-18 14:32:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-11-18 14:32:14,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 271 transitions. [2018-11-18 14:32:14,725 INFO L728 BuchiCegarLoop]: Abstraction has 219 states and 271 transitions. [2018-11-18 14:32:14,725 INFO L608 BuchiCegarLoop]: Abstraction has 219 states and 271 transitions. [2018-11-18 14:32:14,725 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-18 14:32:14,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 219 states and 271 transitions. [2018-11-18 14:32:14,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 14:32:14,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 14:32:14,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 14:32:14,726 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1] [2018-11-18 14:32:14,726 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 14:32:14,727 INFO L794 eck$LassoCheckResult]: Stem: 3777#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3773#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~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; 3774#L18-3 assume true; 3783#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 3784#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 3779#L20-3 assume true; 3780#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 3860#L20-3 assume true; 3848#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 3849#L20-3 assume true; 3875#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 3951#L20-3 assume true; 3948#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 3986#L20-4 main_~x~0 := main_~x~0 - 1; 3945#L19-2 main_~y~0 := main_~y~0 - 1; 3944#L18-3 assume true; 3888#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 3889#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 3885#L19-2 main_~y~0 := main_~y~0 - 1; 3910#L18-3 assume true; 3815#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 3813#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 3809#L20-3 assume true; 3810#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 3805#L20-3 assume true; 3801#L20-1 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 3794#L20-3 assume true; 3800#L20-1 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 3799#L20-4 main_~x~0 := main_~x~0 - 1; 3798#L19-2 main_~y~0 := main_~y~0 - 1; 3797#L18-3 assume true; 3796#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 3793#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 3778#L19-2 [2018-11-18 14:32:14,727 INFO L796 eck$LassoCheckResult]: Loop: 3778#L19-2 main_~y~0 := main_~y~0 - 1; 3769#L18-3 assume true; 3770#L18-1 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 3787#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 3778#L19-2 [2018-11-18 14:32:14,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,727 INFO L82 PathProgramCache]: Analyzing trace with hash -298374300, now seen corresponding path program 5 times [2018-11-18 14:32:14,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:14,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:14,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,728 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:14,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1912793, now seen corresponding path program 4 times [2018-11-18 14:32:14,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:14,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:14,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,743 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:14,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1580855740, now seen corresponding path program 6 times [2018-11-18 14:32:14,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:32:14,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:32:14,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 14:32:14,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:32:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:32:14,768 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:14,769 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:14,769 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:14,769 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:14,769 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 14:32:14,769 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,769 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:14,769 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:14,769 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration10_Loop [2018-11-18 14:32:14,769 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:14,769 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:14,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,826 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:14,826 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,828 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:14,828 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:14,830 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:14,830 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,845 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:14,845 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:14,860 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 14:32:14,860 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_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 14:32:14,863 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08aeb4e6-fb91-4987-95e6-d61885b2e386/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 [2018-11-18 14:32:14,879 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 14:32:14,879 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 14:32:14,909 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 14:32:14,911 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 14:32:14,911 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 14:32:14,911 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 14:32:14,911 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 14:32:14,911 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 14:32:14,911 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 14:32:14,911 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 14:32:14,911 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 14:32:14,911 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1_true-termination_true-no-overflow.c_Iteration10_Loop [2018-11-18 14:32:14,911 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 14:32:14,911 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 14:32:14,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 14:32:14,943 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 14:32:14,944 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 14:32:14,944 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:14,944 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:14,944 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:14,945 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:14,945 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:14,945 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:14,945 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:14,945 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:14,946 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:14,946 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:14,946 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:14,946 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:14,946 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:14,946 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:14,947 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-18 14:32:14,947 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-18 14:32:14,948 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 14:32:14,949 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 14:32:14,949 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 14:32:14,949 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 14:32:14,949 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 14:32:14,950 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 14:32:14,950 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 14:32:14,950 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 14:32:14,950 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 14:32:14,952 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 14:32:14,953 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 14:32:14,953 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 14:32:14,953 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 14:32:14,953 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 14:32:14,954 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 14:32:14,954 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 14:32:14,954 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 14:32:14,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:14,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:14,995 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-18 14:32:14,995 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 219 states and 271 transitions. cyclomatic complexity: 73 Second operand 4 states. [2018-11-18 14:32:15,015 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 219 states and 271 transitions. cyclomatic complexity: 73. Second operand 4 states. Result 294 states and 363 transitions. Complement of second has 7 states. [2018-11-18 14:32:15,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:32:15,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-11-18 14:32:15,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 33 letters. Loop has 4 letters. [2018-11-18 14:32:15,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:15,016 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:32:15,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:15,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:15,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:15,049 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 [2018-11-18 14:32:15,049 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 219 states and 271 transitions. cyclomatic complexity: 73 Second operand 4 states. [2018-11-18 14:32:15,069 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 219 states and 271 transitions. cyclomatic complexity: 73. Second operand 4 states. Result 352 states and 429 transitions. Complement of second has 9 states. [2018-11-18 14:32:15,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:32:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2018-11-18 14:32:15,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 4 letters. [2018-11-18 14:32:15,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:15,073 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 14:32:15,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:32:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:15,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:32:15,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:32:15,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:32:15,115 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 [2018-11-18 14:32:15,115 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 219 states and 271 transitions. cyclomatic complexity: 73 Second operand 4 states. [2018-11-18 14:32:15,127 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 219 states and 271 transitions. cyclomatic complexity: 73. Second operand 4 states. Result 375 states and 475 transitions. Complement of second has 8 states. [2018-11-18 14:32:15,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 14:32:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 14:32:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-18 14:32:15,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 33 letters. Loop has 4 letters. [2018-11-18 14:32:15,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:15,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 37 letters. Loop has 4 letters. [2018-11-18 14:32:15,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:15,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 33 letters. Loop has 8 letters. [2018-11-18 14:32:15,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 14:32:15,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 375 states and 475 transitions. [2018-11-18 14:32:15,134 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 14:32:15,134 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 375 states to 0 states and 0 transitions. [2018-11-18 14:32:15,134 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 14:32:15,134 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 14:32:15,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 14:32:15,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 14:32:15,135 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:32:15,135 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:32:15,135 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 14:32:15,135 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-18 14:32:15,135 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 14:32:15,135 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 14:32:15,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 14:32:15,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 02:32:15 BoogieIcfgContainer [2018-11-18 14:32:15,142 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 14:32:15,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:32:15,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:32:15,143 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:32:15,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:32:11" (3/4) ... [2018-11-18 14:32:15,148 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 14:32:15,148 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:32:15,148 INFO L168 Benchmark]: Toolchain (without parser) took 4190.14 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 318.8 MB). Free memory was 959.2 MB in the beginning and 1.3 GB in the end (delta: -339.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:32:15,150 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. [2018-11-18 14:32:15,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 138.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:32:15,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.19 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:32:15,151 INFO L168 Benchmark]: Boogie Preprocessor took 11.16 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:32:15,151 INFO L168 Benchmark]: RCFGBuilder took 177.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 14:32:15,151 INFO L168 Benchmark]: BuchiAutomizer took 3836.55 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 157.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -160.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:32:15,152 INFO L168 Benchmark]: Witness Printer took 5.22 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:32:15,154 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 138.55 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.19 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.16 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 177.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -192.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3836.55 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 157.8 MB). Free memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: -160.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.22 ms. Allocated memory is still 1.3 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (4 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 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 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. 4 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.7s and 11 iterations. TraceHistogramMax:7. Analysis of lassos took 2.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 173 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 219 states and ocurred in iteration 9. Nontrivial modules had stage [5, 2, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 241 SDtfs, 244 SDslu, 148 SDs, 0 SdLazy, 181 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 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: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...