./Ultimate.py --spec ../../sv-benchmarks/c/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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/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_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/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 0.1.23-5842f4b [2018-11-18 13:58:25,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:58:25,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:58:25,660 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:58:25,660 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:58:25,661 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:58:25,662 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:58:25,664 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:58:25,665 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:58:25,666 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:58:25,666 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:58:25,667 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:58:25,667 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:58:25,669 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:58:25,670 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:58:25,670 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:58:25,671 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:58:25,673 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:58:25,675 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:58:25,676 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:58:25,677 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:58:25,678 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:58:25,680 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:58:25,680 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:58:25,681 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:58:25,681 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:58:25,682 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:58:25,683 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:58:25,683 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:58:25,684 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:58:25,685 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:58:25,685 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:58:25,685 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:58:25,685 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:58:25,687 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:58:25,688 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:58:25,688 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 13:58:25,701 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:58:25,701 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:58:25,703 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:58:25,703 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:58:25,703 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:58:25,703 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 13:58:25,703 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 13:58:25,703 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 13:58:25,704 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 13:58:25,704 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 13:58:25,704 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 13:58:25,704 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:58:25,704 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:58:25,705 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 13:58:25,705 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:58:25,705 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:58:25,705 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:58:25,705 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 13:58:25,705 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 13:58:25,706 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 13:58:25,706 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:58:25,706 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:58:25,706 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 13:58:25,708 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:58:25,708 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 13:58:25,709 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:58:25,709 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:58:25,709 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 13:58:25,709 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:58:25,709 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:58:25,709 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 13:58:25,710 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 13:58:25,710 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_b70a706f-b453-4c68-9d69-f84cf3258eb8/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 [2018-11-18 13:58:25,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:58:25,749 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:58:25,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:58:25,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:58:25,754 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:58:25,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2018-11-18 13:58:25,805 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/data/1a6df967d/5d28efc48c444e60bd0caff805d43a71/FLAGf5eb9f547 [2018-11-18 13:58:26,145 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:58:26,146 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2018-11-18 13:58:26,150 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/data/1a6df967d/5d28efc48c444e60bd0caff805d43a71/FLAGf5eb9f547 [2018-11-18 13:58:26,568 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/data/1a6df967d/5d28efc48c444e60bd0caff805d43a71 [2018-11-18 13:58:26,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:58:26,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:58:26,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:58:26,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:58:26,575 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:58:26,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c07ef83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26, skipping insertion in model container [2018-11-18 13:58:26,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:58:26,603 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:58:26,731 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:58:26,734 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:58:26,744 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:58:26,756 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:58:26,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26 WrapperNode [2018-11-18 13:58:26,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:58:26,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:58:26,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:58:26,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:58:26,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:58:26,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:58:26,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:58:26,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:58:26,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... [2018-11-18 13:58:26,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:58:26,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:58:26,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:58:26,796 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:58:26,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:58:26,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:58:27,001 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:58:27,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:58:27 BoogieIcfgContainer [2018-11-18 13:58:27,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:58:27,002 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 13:58:27,002 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 13:58:27,006 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 13:58:27,007 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:58:27,007 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 01:58:26" (1/3) ... [2018-11-18 13:58:27,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16459891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 01:58:27, skipping insertion in model container [2018-11-18 13:58:27,009 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:58:27,009 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:58:26" (2/3) ... [2018-11-18 13:58:27,009 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@16459891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 01:58:27, skipping insertion in model container [2018-11-18 13:58:27,009 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:58:27,010 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:58:27" (3/3) ... [2018-11-18 13:58:27,011 INFO L375 chiAutomizerObserver]: Analyzing ICFG gr2006_true-unreach-call_true-termination.c.i [2018-11-18 13:58:27,072 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:58:27,073 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 13:58:27,073 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 13:58:27,073 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 13:58:27,073 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:58:27,074 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:58:27,074 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 13:58:27,074 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:58:27,074 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 13:58:27,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-11-18 13:58:27,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:27,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:58:27,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:58:27,118 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 13:58:27,119 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:58:27,119 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 13:58:27,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-11-18 13:58:27,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:27,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:58:27,121 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:58:27,121 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-18 13:58:27,121 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:58:27,129 INFO L794 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 8#L14-3true [2018-11-18 13:58:27,129 INFO L796 eck$LassoCheckResult]: Loop: 8#L14-3true assume true; 11#L14-1true assume !false; 3#L15true assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 12#L15-2true assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 8#L14-3true [2018-11-18 13:58:27,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:27,136 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-18 13:58:27,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:27,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:27,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:27,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:27,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1114349, now seen corresponding path program 1 times [2018-11-18 13:58:27,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:27,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:27,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:27,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:27,247 INFO L82 PathProgramCache]: Analyzing trace with hash 889541551, now seen corresponding path program 1 times [2018-11-18 13:58:27,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:27,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:27,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:27,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:27,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:58:27,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 13:58:27,357 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:27,357 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:27,358 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:27,358 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:27,358 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:58:27,358 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:27,358 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:27,358 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:27,358 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2018-11-18 13:58:27,359 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:27,359 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:27,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,397 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,477 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:27,477 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:27,481 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:27,482 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:27,505 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:58:27,505 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:27,545 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:58:27,546 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:27,546 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:27,546 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:27,546 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:27,547 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:58:27,547 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:27,547 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:27,547 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:27,547 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2018-11-18 13:58:27,547 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:27,547 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:27,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,612 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:27,616 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:58:27,617 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:27,618 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:27,618 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:27,619 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:27,619 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:27,619 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:27,621 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:27,622 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:27,627 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:58:27,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:58:27,631 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-18 13:58:27,633 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:58:27,633 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:58:27,634 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:58:27,635 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-18 13:58:27,636 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:58:27,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:27,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:27,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:27,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:27,703 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 13:58:27,704 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 4 states. [2018-11-18 13:58:27,751 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 4 states. Result 42 states and 52 transitions. Complement of second has 8 states. [2018-11-18 13:58:27,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 13:58:27,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 13:58:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-18 13:58:27,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-18 13:58:27,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:27,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-18 13:58:27,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:27,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-18 13:58:27,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:27,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 52 transitions. [2018-11-18 13:58:27,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:27,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 13 states and 16 transitions. [2018-11-18 13:58:27,766 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-18 13:58:27,766 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-18 13:58:27,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2018-11-18 13:58:27,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:58:27,767 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-18 13:58:27,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2018-11-18 13:58:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-18 13:58:27,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 13:58:27,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-11-18 13:58:27,788 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2018-11-18 13:58:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:58:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:58:27,791 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 3 states. [2018-11-18 13:58:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:58:27,802 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2018-11-18 13:58:27,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:58:27,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2018-11-18 13:58:27,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:27,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 11 transitions. [2018-11-18 13:58:27,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-18 13:58:27,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-18 13:58:27,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2018-11-18 13:58:27,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 13:58:27,805 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2018-11-18 13:58:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2018-11-18 13:58:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-11-18 13:58:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-18 13:58:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-18 13:58:27,806 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 13:58:27,807 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-18 13:58:27,807 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 13:58:27,807 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-18 13:58:27,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:27,807 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:58:27,807 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:58:27,807 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-18 13:58:27,807 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:58:27,808 INFO L794 eck$LassoCheckResult]: Stem: 131#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 127#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 128#L14-3 assume true; 135#L14-1 assume !false; 129#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 130#L15-2 [2018-11-18 13:58:27,808 INFO L796 eck$LassoCheckResult]: Loop: 130#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 132#L14-3 assume true; 133#L14-1 assume !false; 134#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 130#L15-2 [2018-11-18 13:58:27,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:27,808 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-18 13:58:27,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:27,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:27,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:27,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:27,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1614869, now seen corresponding path program 2 times [2018-11-18 13:58:27,815 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:27,815 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:27,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:27,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:27,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:27,823 INFO L82 PathProgramCache]: Analyzing trace with hash 382288634, now seen corresponding path program 1 times [2018-11-18 13:58:27,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:27,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:27,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,824 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:58:27,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:27,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:58:27,847 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:58:27,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:27,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:27,884 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:58:27,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-18 13:58:27,902 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:27,902 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:27,902 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:27,902 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:27,902 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:58:27,902 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:27,902 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:27,903 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:27,903 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2018-11-18 13:58:27,903 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:27,903 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:27,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:27,956 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:27,957 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:27,959 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:27,960 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:27,976 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:58:27,976 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_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:27,998 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:27,999 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:28,001 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:58:28,001 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_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,022 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:28,022 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,043 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:58:28,043 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:28,061 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:58:28,061 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=49} Honda state: {ULTIMATE.start_main_~x~0=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 2, 7] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,081 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:28,081 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,103 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:58:28,103 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:28,125 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:58:28,126 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:28,126 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:28,126 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:28,127 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:28,127 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:58:28,127 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,127 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:28,127 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:28,127 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2018-11-18 13:58:28,127 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:28,127 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:28,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,171 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:28,171 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:58:28,172 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,173 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,173 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,173 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,173 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,173 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,173 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,174 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,176 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:28,176 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,177 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,177 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,177 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,178 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,178 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,178 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,178 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,179 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:28,180 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,180 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,181 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,181 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,181 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,181 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,182 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,182 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,185 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:28,186 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,186 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,187 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,187 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,187 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,187 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,188 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,188 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,191 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:58:28,195 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:58:28,195 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:58:28,195 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:58:28,195 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:58:28,196 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:58:28,196 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-18 13:58:28,196 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:58:28,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:28,273 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 13:58:28,273 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-18 13:58:28,296 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 17 states and 20 transitions. Complement of second has 5 states. [2018-11-18 13:58:28,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 13:58:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:58:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-18 13:58:28,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-18 13:58:28,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,297 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 13:58:28,297 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-18 13:58:28,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,298 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 20 transitions. [2018-11-18 13:58:28,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:28,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 20 transitions. [2018-11-18 13:58:28,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-18 13:58:28,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 13:58:28,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 20 transitions. [2018-11-18 13:58:28,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:58:28,300 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-18 13:58:28,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 20 transitions. [2018-11-18 13:58:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 13:58:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 13:58:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-18 13:58:28,302 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-18 13:58:28,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:58:28,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:58:28,303 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2018-11-18 13:58:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:58:28,326 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2018-11-18 13:58:28,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:58:28,327 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 18 transitions. [2018-11-18 13:58:28,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:28,328 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 15 transitions. [2018-11-18 13:58:28,328 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-18 13:58:28,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-18 13:58:28,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 15 transitions. [2018-11-18 13:58:28,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 13:58:28,329 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-11-18 13:58:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 15 transitions. [2018-11-18 13:58:28,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-11-18 13:58:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-18 13:58:28,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-18 13:58:28,331 INFO L728 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 13:58:28,331 INFO L608 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-18 13:58:28,331 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 13:58:28,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2018-11-18 13:58:28,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:58:28,332 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:58:28,332 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:58:28,332 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2018-11-18 13:58:28,332 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:58:28,333 INFO L794 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 263#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 264#L14-3 assume true; 273#L14-1 assume !false; 272#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 268#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 266#L14-3 assume true; 267#L14-1 assume !false; 261#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 262#L15-2 [2018-11-18 13:58:28,333 INFO L796 eck$LassoCheckResult]: Loop: 262#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 271#L14-3 assume true; 270#L14-1 assume !false; 269#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 262#L15-2 [2018-11-18 13:58:28,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,333 INFO L82 PathProgramCache]: Analyzing trace with hash 382288632, now seen corresponding path program 1 times [2018-11-18 13:58:28,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:28,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:28,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:28,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,343 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1614869, now seen corresponding path program 3 times [2018-11-18 13:58:28,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:28,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:28,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:28,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,350 INFO L82 PathProgramCache]: Analyzing trace with hash 973706124, now seen corresponding path program 2 times [2018-11-18 13:58:28,350 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:28,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:28,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,351 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:58:28,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:28,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:58:28,399 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:58:28,419 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:58:28,430 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:58:28,431 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:58:28,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:28,468 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:58:28,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-18 13:58:28,512 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:28,512 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:28,513 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:28,513 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:28,513 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:58:28,513 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,513 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:28,513 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:28,513 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2018-11-18 13:58:28,513 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:28,513 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:28,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,563 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:28,563 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,566 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:28,566 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:28,571 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:58:28,571 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_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,593 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:28,593 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,624 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:58:28,625 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:28,642 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:58:28,642 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=49} Honda state: {ULTIMATE.start_main_~x~0=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [1, 2, 7] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,662 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:28,662 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,684 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:58:28,684 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:28,705 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:58:28,706 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:28,706 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:28,706 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:28,706 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:28,706 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:58:28,707 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,707 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:28,707 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:28,707 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2018-11-18 13:58:28,707 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:28,707 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:28,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,748 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:28,748 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:58:28,748 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,749 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,749 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,749 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,749 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,749 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,750 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,750 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,751 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:28,751 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,752 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,752 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,752 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,752 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,752 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,753 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,753 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,756 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:28,757 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,757 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,757 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,758 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,758 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,758 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,758 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,759 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,760 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:28,760 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:28,761 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:28,761 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:28,761 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:28,761 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:28,761 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:28,762 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:28,762 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:28,765 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:58:28,767 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:58:28,767 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:58:28,768 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:58:28,768 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:58:28,768 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:58:28,768 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-18 13:58:28,768 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:58:28,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,799 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:28,808 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 13:58:28,809 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-18 13:58:28,818 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 16 states and 17 transitions. Complement of second has 5 states. [2018-11-18 13:58:28,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 13:58:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:58:28,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-18 13:58:28,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 13:58:28,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,819 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 13:58:28,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,842 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:28,855 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 13:58:28,855 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-18 13:58:28,861 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 16 states and 17 transitions. Complement of second has 5 states. [2018-11-18 13:58:28,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 13:58:28,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:58:28,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-18 13:58:28,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 13:58:28,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,863 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-18 13:58:28,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:28,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:28,892 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 2 loop predicates [2018-11-18 13:58:28,892 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2018-11-18 13:58:28,903 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 20 states and 22 transitions. Complement of second has 4 states. [2018-11-18 13:58:28,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 13:58:28,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:58:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-11-18 13:58:28,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-18 13:58:28,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-18 13:58:28,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-18 13:58:28,905 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:28,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2018-11-18 13:58:28,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-18 13:58:28,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 19 transitions. [2018-11-18 13:58:28,906 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-18 13:58:28,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-18 13:58:28,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 19 transitions. [2018-11-18 13:58:28,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:58:28,907 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-18 13:58:28,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 19 transitions. [2018-11-18 13:58:28,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2018-11-18 13:58:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-18 13:58:28,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2018-11-18 13:58:28,909 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-18 13:58:28,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:58:28,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:58:28,909 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2018-11-18 13:58:28,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:58:28,930 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-11-18 13:58:28,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:58:28,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2018-11-18 13:58:28,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-18 13:58:28,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 25 transitions. [2018-11-18 13:58:28,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-18 13:58:28,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-18 13:58:28,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2018-11-18 13:58:28,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:58:28,932 INFO L705 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2018-11-18 13:58:28,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2018-11-18 13:58:28,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2018-11-18 13:58:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 13:58:28,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-18 13:58:28,933 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 13:58:28,933 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 13:58:28,933 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 13:58:28,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 20 transitions. [2018-11-18 13:58:28,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-18 13:58:28,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:58:28,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:58:28,934 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2018-11-18 13:58:28,934 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:58:28,935 INFO L794 eck$LassoCheckResult]: Stem: 559#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 557#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 558#L14-3 assume true; 570#L14-1 assume !false; 569#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 564#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 560#L14-3 assume true; 561#L14-1 assume !false; 553#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 554#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 565#L14-3 [2018-11-18 13:58:28,935 INFO L796 eck$LassoCheckResult]: Loop: 565#L14-3 assume true; 568#L14-1 assume !false; 567#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 566#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 565#L14-3 [2018-11-18 13:58:28,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1033954273, now seen corresponding path program 2 times [2018-11-18 13:58:28,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:28,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:28,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:58:28,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1114287, now seen corresponding path program 1 times [2018-11-18 13:58:28,942 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:28,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:28,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,943 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 13:58:28,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:28,948 INFO L82 PathProgramCache]: Analyzing trace with hash 120118733, now seen corresponding path program 3 times [2018-11-18 13:58:28,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:58:28,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:58:28,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:58:28,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:58:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:58:28,981 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:28,981 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:28,981 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:28,981 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:28,981 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:58:28,981 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:28,981 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:28,982 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:28,982 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration4_Loop [2018-11-18 13:58:28,982 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:28,982 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:28,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:28,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:29,015 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:29,015 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:29,017 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:29,017 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:29,019 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:58:29,019 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_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:29,039 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:29,039 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:29,059 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:58:29,059 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:29,091 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:58:29,091 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=-1} Honda state: {ULTIMATE.start_main_~y~0=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0=1}, {ULTIMATE.start_main_~y~0=0}, {ULTIMATE.start_main_~y~0=0}] Lambdas: [1, 6, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:29,111 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:58:29,111 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b70a706f-b453-4c68-9d69-f84cf3258eb8/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:29,131 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:58:29,131 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:58:29,151 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:58:29,152 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:58:29,152 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:58:29,152 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:58:29,152 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:58:29,153 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:58:29,153 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:58:29,153 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:58:29,153 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:58:29,153 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration4_Loop [2018-11-18 13:58:29,153 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:58:29,153 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:58:29,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:29,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:29,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:29,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 13:58:29,184 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:58:29,184 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:58:29,184 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:29,185 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:29,185 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:29,185 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:29,185 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:29,185 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:29,186 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:29,186 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:29,189 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:29,190 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:29,190 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:29,190 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:29,190 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:29,191 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:29,191 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:29,191 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:29,191 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:29,192 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:58:29,192 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 13:58:29,193 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:58:29,193 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:58:29,193 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:58:29,193 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:58:29,194 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:58:29,194 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:58:29,198 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:58:29,201 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:58:29,208 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:58:29,208 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:58:29,208 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:58:29,208 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:58:29,209 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:58:29,209 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 99 Supporting invariants [] [2018-11-18 13:58:29,209 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:58:29,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:58:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:29,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:58:29,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:58:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:58:29,241 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-18 13:58:29,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 20 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-18 13:58:29,252 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 20 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 33 states and 37 transitions. Complement of second has 6 states. [2018-11-18 13:58:29,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-18 13:58:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 13:58:29,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-18 13:58:29,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-18 13:58:29,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:29,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 13:58:29,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:29,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-18 13:58:29,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:58:29,255 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 37 transitions. [2018-11-18 13:58:29,256 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 13:58:29,256 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2018-11-18 13:58:29,256 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 13:58:29,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 13:58:29,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 13:58:29,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 13:58:29,256 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:58:29,256 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:58:29,257 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:58:29,257 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 13:58:29,257 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:58:29,257 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 13:58:29,257 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 13:58:29,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 01:58:29 BoogieIcfgContainer [2018-11-18 13:58:29,263 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 13:58:29,263 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:58:29,263 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:58:29,263 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:58:29,264 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:58:27" (3/4) ... [2018-11-18 13:58:29,267 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:58:29,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:58:29,268 INFO L168 Benchmark]: Toolchain (without parser) took 2696.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 956.4 MB in the beginning and 838.3 MB in the end (delta: 118.1 MB). Peak memory consumption was 269.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:58:29,269 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:58:29,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.19 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:58:29,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.88 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:58:29,271 INFO L168 Benchmark]: Boogie Preprocessor took 14.86 ms. Allocated memory is still 1.0 GB. Free memory is still 940.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:58:29,271 INFO L168 Benchmark]: RCFGBuilder took 206.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:58:29,272 INFO L168 Benchmark]: BuchiAutomizer took 2260.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 838.3 MB in the end (delta: 290.6 MB). Peak memory consumption was 290.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:58:29,272 INFO L168 Benchmark]: Witness Printer took 4.07 ms. Allocated memory is still 1.2 GB. Free memory is still 838.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:58:29,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 977.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.19 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 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 22.88 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.86 ms. Allocated memory is still 1.0 GB. Free memory is still 940.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 206.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2260.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 838.3 MB in the end (delta: 290.6 MB). Peak memory consumption was 290.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.07 ms. Allocated memory is still 1.2 GB. Free memory is still 838.3 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 99 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 63 SDtfs, 65 SDslu, 37 SDs, 0 SdLazy, 61 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 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 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 17ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...