./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 32bit --witnessprinter.graph.data.programhash 76260ed82768318ee6f3ac3cb9cfff5a60080963 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 12:50:45,758 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 12:50:45,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 12:50:45,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 12:50:45,765 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 12:50:45,766 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 12:50:45,767 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 12:50:45,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 12:50:45,768 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 12:50:45,768 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 12:50:45,769 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 12:50:45,769 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 12:50:45,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 12:50:45,770 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 12:50:45,770 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 12:50:45,771 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 12:50:45,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 12:50:45,772 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 12:50:45,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 12:50:45,773 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 12:50:45,774 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 12:50:45,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 12:50:45,775 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 12:50:45,776 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 12:50:45,776 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 12:50:45,776 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 12:50:45,777 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 12:50:45,777 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 12:50:45,777 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 12:50:45,778 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 12:50:45,778 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 12:50:45,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 12:50:45,778 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 12:50:45,778 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 12:50:45,779 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 12:50:45,779 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 12:50:45,779 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-02 12:50:45,787 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 12:50:45,787 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 12:50:45,788 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 12:50:45,788 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 12:50:45,788 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 12:50:45,788 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-02 12:50:45,788 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-02 12:50:45,788 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-02 12:50:45,788 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-02 12:50:45,788 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-02 12:50:45,788 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-02 12:50:45,789 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 12:50:45,789 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 12:50:45,790 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-02 12:50:45,790 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 12:50:45,790 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-02 12:50:45,790 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 12:50:45,790 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 12:50:45,790 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-02 12:50:45,790 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 12:50:45,790 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 12:50:45,790 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-02 12:50:45,791 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-02 12:50:45,791 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_bc010063-a338-448f-8a5c-a2802868f4bb/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76260ed82768318ee6f3ac3cb9cfff5a60080963 [2018-12-02 12:50:45,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 12:50:45,815 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 12:50:45,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 12:50:45,817 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 12:50:45,818 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 12:50:45,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2018-12-02 12:50:45,852 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/data/393251004/13b65731e3884b00a6a785efb1e9d716/FLAG4a4a7a55b [2018-12-02 12:50:46,266 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 12:50:46,266 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2018-12-02 12:50:46,270 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/data/393251004/13b65731e3884b00a6a785efb1e9d716/FLAG4a4a7a55b [2018-12-02 12:50:46,278 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/data/393251004/13b65731e3884b00a6a785efb1e9d716 [2018-12-02 12:50:46,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 12:50:46,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 12:50:46,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:46,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 12:50:46,283 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 12:50:46,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f385d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46, skipping insertion in model container [2018-12-02 12:50:46,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 12:50:46,299 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 12:50:46,385 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:46,388 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 12:50:46,396 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 12:50:46,404 INFO L195 MainTranslator]: Completed translation [2018-12-02 12:50:46,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46 WrapperNode [2018-12-02 12:50:46,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 12:50:46,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:46,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 12:50:46,405 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 12:50:46,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 12:50:46,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 12:50:46,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 12:50:46,423 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 12:50:46,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... [2018-12-02 12:50:46,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 12:50:46,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 12:50:46,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 12:50:46,434 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 12:50:46,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:46,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 12:50:46,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 12:50:46,572 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 12:50:46,572 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-02 12:50:46,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:46 BoogieIcfgContainer [2018-12-02 12:50:46,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 12:50:46,573 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-02 12:50:46,573 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-02 12:50:46,575 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-02 12:50:46,575 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 12:50:46,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 12:50:46" (1/3) ... [2018-12-02 12:50:46,576 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48406df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 12:50:46, skipping insertion in model container [2018-12-02 12:50:46,576 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 12:50:46,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:50:46" (2/3) ... [2018-12-02 12:50:46,576 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@48406df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 12:50:46, skipping insertion in model container [2018-12-02 12:50:46,577 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 12:50:46,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:46" (3/3) ... [2018-12-02 12:50:46,577 INFO L375 chiAutomizerObserver]: Analyzing ICFG gr2006_true-unreach-call_true-termination.c.i [2018-12-02 12:50:46,609 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 12:50:46,609 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-02 12:50:46,609 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-02 12:50:46,609 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-02 12:50:46,610 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 12:50:46,610 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 12:50:46,610 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-02 12:50:46,610 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 12:50:46,610 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-02 12:50:46,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-12-02 12:50:46,629 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 12:50:46,629 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 12:50:46,629 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 12:50:46,633 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-02 12:50:46,633 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 12:50:46,633 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-02 12:50:46,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-12-02 12:50:46,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 12:50:46,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 12:50:46,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 12:50:46,634 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-02 12:50:46,634 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 12:50:46,638 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 7#L14-2true [2018-12-02 12:50:46,638 INFO L796 eck$LassoCheckResult]: Loop: 7#L14-2true assume !false; 3#L15true assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 10#L15-2true assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 7#L14-2true [2018-12-02 12:50:46,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:46,642 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-02 12:50:46,643 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:46,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:46,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:46,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:46,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:46,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:46,700 INFO L82 PathProgramCache]: Analyzing trace with hash 39825, now seen corresponding path program 1 times [2018-12-02 12:50:46,701 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:46,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:46,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:46,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:46,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:46,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:46,709 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2018-12-02 12:50:46,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:46,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:46,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:46,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:46,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:46,744 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 12:50:46,745 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 12:50:46,745 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 12:50:46,745 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 12:50:46,745 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 12:50:46,745 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 12:50:46,745 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 12:50:46,745 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 12:50:46,745 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2018-12-02 12:50:46,745 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 12:50:46,746 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 12:50:46,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,813 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 12:50:46,813 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:46,816 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 12:50:46,816 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:46,833 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 12:50:46,833 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 12:50:46,850 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 12:50:46,851 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 12:50:46,851 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 12:50:46,851 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 12:50:46,851 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 12:50:46,851 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 12:50:46,851 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 12:50:46,852 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 12:50:46,852 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 12:50:46,852 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2018-12-02 12:50:46,852 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 12:50:46,852 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 12:50:46,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:46,887 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 12:50:46,890 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 12:50:46,891 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 [2018-12-02 12:50:46,892 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 12:50:46,892 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 12:50:46,893 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 12:50:46,893 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 12:50:46,893 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 12:50:46,894 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 12:50:46,894 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 12:50:46,898 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 12:50:46,902 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 12:50:46,902 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 12:50:46,903 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 12:50:46,903 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 12:50:46,904 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 12:50:46,904 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 99 Supporting invariants [] [2018-12-02 12:50:46,905 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 12:50:46,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:46,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:46,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:46,959 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 [2018-12-02 12:50:46,960 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-12-02 12:50:46,994 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 7 states. [2018-12-02 12:50:46,994 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 [2018-12-02 12:50:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 12:50:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2018-12-02 12:50:46,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 3 letters. [2018-12-02 12:50:46,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:46,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 4 letters. Loop has 3 letters. [2018-12-02 12:50:46,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:46,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 6 letters. [2018-12-02 12:50:46,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:46,998 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2018-12-02 12:50:47,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 12:50:47,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 11 states and 14 transitions. [2018-12-02 12:50:47,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-02 12:50:47,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-02 12:50:47,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-12-02 12:50:47,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 12:50:47,004 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-12-02 12:50:47,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-12-02 12:50:47,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-12-02 12:50:47,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-02 12:50:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-12-02 12:50:47,020 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-02 12:50:47,020 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-02 12:50:47,020 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-02 12:50:47,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-12-02 12:50:47,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 12:50:47,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 12:50:47,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 12:50:47,021 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 12:50:47,021 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 12:50:47,021 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 103#L14-2 assume !false; 97#L15 [2018-12-02 12:50:47,021 INFO L796 eck$LassoCheckResult]: Loop: 97#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 98#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 104#L14-2 assume !false; 97#L15 [2018-12-02 12:50:47,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-02 12:50:47,021 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:47,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:47,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:47,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,024 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 1 times [2018-12-02 12:50:47,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:47,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:47,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:47,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,029 INFO L82 PathProgramCache]: Analyzing trace with hash 29865658, now seen corresponding path program 1 times [2018-12-02 12:50:47,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:47,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:47,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:47,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:47,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 12:50:47,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 12:50:47,063 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 12:50:47,063 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 12:50:47,064 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 12:50:47,064 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 12:50:47,064 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 12:50:47,064 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 12:50:47,064 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 12:50:47,064 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 12:50:47,064 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2018-12-02 12:50:47,064 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 12:50:47,064 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 12:50:47,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,107 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 12:50:47,107 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,108 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 12:50:47,108 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 12:50:47,112 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 12:50:47,112 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3=0} Honda state: {ULTIMATE.start_main_#t~post3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,127 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 12:50:47,127 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,151 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 12:50:47,151 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 12:50:47,157 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 12:50:47,157 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=50} Honda state: {ULTIMATE.start_main_~x~0=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,172 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 12:50:47,172 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 12:50:47,174 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 12:50:47,174 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,189 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 12:50:47,189 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,206 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 12:50:47,206 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 12:50:47,235 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 12:50:47,237 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 12:50:47,237 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 12:50:47,237 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 12:50:47,237 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 12:50:47,237 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 12:50:47,237 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 12:50:47,238 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 12:50:47,238 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 12:50:47,238 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2018-12-02 12:50:47,238 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 12:50:47,238 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 12:50:47,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,268 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 12:50:47,268 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 12:50:47,268 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 [2018-12-02 12:50:47,269 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 12:50:47,269 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 12:50:47,269 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 12:50:47,269 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 12:50:47,269 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 12:50:47,269 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 12:50:47,270 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 12:50:47,270 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 12:50:47,271 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 [2018-12-02 12:50:47,271 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 12:50:47,271 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 12:50:47,271 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 12:50:47,271 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 12:50:47,271 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 12:50:47,272 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 12:50:47,272 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 12:50:47,274 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 12:50:47,275 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 [2018-12-02 12:50:47,275 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 12:50:47,275 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 12:50:47,275 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 12:50:47,275 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 12:50:47,275 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 12:50:47,276 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 12:50:47,276 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 12:50:47,277 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 12:50:47,277 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 [2018-12-02 12:50:47,277 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 12:50:47,277 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 12:50:47,277 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 12:50:47,278 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 12:50:47,278 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 12:50:47,278 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 12:50:47,278 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 12:50:47,280 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 12:50:47,282 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 12:50:47,282 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 12:50:47,283 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 12:50:47,283 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 12:50:47,283 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 12:50:47,283 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-02 12:50:47,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 12:50:47,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,303 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:47,331 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 [2018-12-02 12:50:47,332 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-02 12:50:47,345 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 23 states and 29 transitions. Complement of second has 7 states. [2018-12-02 12:50:47,345 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 [2018-12-02 12:50:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 12:50:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-12-02 12:50:47,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2018-12-02 12:50:47,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-02 12:50:47,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2018-12-02 12:50:47,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,347 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2018-12-02 12:50:47,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 12:50:47,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 15 states and 19 transitions. [2018-12-02 12:50:47,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-02 12:50:47,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-02 12:50:47,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2018-12-02 12:50:47,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 12:50:47,349 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-12-02 12:50:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2018-12-02 12:50:47,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-02 12:50:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-02 12:50:47,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-12-02 12:50:47,351 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-12-02 12:50:47,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 12:50:47,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 12:50:47,354 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 3 states. [2018-12-02 12:50:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:47,365 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-12-02 12:50:47,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 12:50:47,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-12-02 12:50:47,366 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 12:50:47,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2018-12-02 12:50:47,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-02 12:50:47,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-02 12:50:47,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2018-12-02 12:50:47,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 12:50:47,367 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-12-02 12:50:47,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2018-12-02 12:50:47,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-12-02 12:50:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-02 12:50:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-12-02 12:50:47,369 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-12-02 12:50:47,369 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-12-02 12:50:47,369 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-02 12:50:47,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2018-12-02 12:50:47,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 12:50:47,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 12:50:47,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 12:50:47,370 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-02 12:50:47,370 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 12:50:47,370 INFO L794 eck$LassoCheckResult]: Stem: 202#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 203#L14-2 assume !false; 200#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 201#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 208#L14-2 assume !false; 198#L15 [2018-12-02 12:50:47,370 INFO L796 eck$LassoCheckResult]: Loop: 198#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 199#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 206#L14-2 assume !false; 198#L15 [2018-12-02 12:50:47,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,371 INFO L82 PathProgramCache]: Analyzing trace with hash 29863736, now seen corresponding path program 2 times [2018-12-02 12:50:47,371 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:47,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:47,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:47,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,378 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 2 times [2018-12-02 12:50:47,378 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:47,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:47,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 12:50:47,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 12:50:47,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,382 INFO L82 PathProgramCache]: Analyzing trace with hash 612343980, now seen corresponding path program 1 times [2018-12-02 12:50:47,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 12:50:47,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 12:50:47,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,383 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 12:50:47,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 12:50:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:47,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 12:50:47,401 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 12:50:47,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 12:50:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:47,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 12:50:47,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-02 12:50:47,450 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 12:50:47,450 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 12:50:47,450 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 12:50:47,450 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 12:50:47,450 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 12:50:47,450 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 12:50:47,451 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 12:50:47,451 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 12:50:47,451 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2018-12-02 12:50:47,451 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 12:50:47,451 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 12:50:47,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,493 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 12:50:47,493 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,494 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 12:50:47,495 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 12:50:47,497 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 12:50:47,497 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2=0} Honda state: {ULTIMATE.start_main_#t~post2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,521 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 12:50:47,521 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc010063-a338-448f-8a5c-a2802868f4bb/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 [2018-12-02 12:50:47,537 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 12:50:47,537 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 12:50:47,567 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 12:50:47,568 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 12:50:47,568 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 12:50:47,568 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 12:50:47,568 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 12:50:47,568 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 12:50:47,568 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 12:50:47,568 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 12:50:47,568 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 12:50:47,568 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2018-12-02 12:50:47,568 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 12:50:47,568 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 12:50:47,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 12:50:47,595 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 12:50:47,595 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 12:50:47,595 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 [2018-12-02 12:50:47,596 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 12:50:47,596 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 12:50:47,596 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 12:50:47,596 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 12:50:47,596 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 12:50:47,596 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 12:50:47,596 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 12:50:47,599 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 12:50:47,600 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 12:50:47,600 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 12:50:47,601 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 12:50:47,601 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 12:50:47,601 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 12:50:47,601 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-02 12:50:47,601 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 12:50:47,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,620 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:47,631 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 [2018-12-02 12:50:47,632 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-02 12:50:47,635 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2018-12-02 12:50:47,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-02 12:50:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 12:50:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-02 12:50:47,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-02 12:50:47,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,635 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 12:50:47,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:47,661 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 [2018-12-02 12:50:47,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-02 12:50:47,663 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2018-12-02 12:50:47,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-02 12:50:47,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 12:50:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-02 12:50:47,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-02 12:50:47,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,665 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 12:50:47,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 12:50:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 12:50:47,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 12:50:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 12:50:47,687 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 [2018-12-02 12:50:47,688 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-02 12:50:47,698 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 18 states and 22 transitions. Complement of second has 6 states. [2018-12-02 12:50:47,699 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 [2018-12-02 12:50:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 12:50:47,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-12-02 12:50:47,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-02 12:50:47,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2018-12-02 12:50:47,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,700 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 6 letters. [2018-12-02 12:50:47,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 12:50:47,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2018-12-02 12:50:47,700 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 12:50:47,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2018-12-02 12:50:47,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 12:50:47,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 12:50:47,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 12:50:47,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 12:50:47,701 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 12:50:47,701 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 12:50:47,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 12:50:47,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 12:50:47,701 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-12-02 12:50:47,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 12:50:47,701 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-02 12:50:47,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 12:50:47,701 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-02 12:50:47,701 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 12:50:47,702 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 12:50:47,702 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 12:50:47,702 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 12:50:47,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 12:50:47,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 12:50:47,702 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 12:50:47,702 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 12:50:47,702 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 12:50:47,702 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-02 12:50:47,702 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-02 12:50:47,702 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 12:50:47,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-02 12:50:47,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 12:50:47 BoogieIcfgContainer [2018-12-02 12:50:47,706 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-02 12:50:47,706 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 12:50:47,706 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 12:50:47,707 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 12:50:47,707 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:50:46" (3/4) ... [2018-12-02 12:50:47,709 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 12:50:47,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 12:50:47,709 INFO L168 Benchmark]: Toolchain (without parser) took 1429.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 953.3 MB in the beginning and 884.9 MB in the end (delta: 68.4 MB). Peak memory consumption was 198.4 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:47,710 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:47,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 123.82 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:47,711 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.24 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:47,711 INFO L168 Benchmark]: Boogie Preprocessor took 10.87 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:47,711 INFO L168 Benchmark]: RCFGBuilder took 138.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -173.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:47,712 INFO L168 Benchmark]: BuchiAutomizer took 1133.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.9 MB in the end (delta: 228.2 MB). Peak memory consumption was 228.2 MB. Max. memory is 11.5 GB. [2018-12-02 12:50:47,712 INFO L168 Benchmark]: Witness Printer took 2.64 ms. Allocated memory is still 1.2 GB. Free memory is still 884.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 12:50:47,714 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 123.82 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.24 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.87 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 138.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -173.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1133.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 884.9 MB in the end (delta: 228.2 MB). Peak memory consumption was 228.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.64 ms. Allocated memory is still 1.2 GB. Free memory is still 884.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 99 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 24 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf91 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 12ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...