./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/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_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 76260ed82768318ee6f3ac3cb9cfff5a60080963 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 12:52:59,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 12:52:59,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 12:52:59,013 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 12:52:59,013 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 12:52:59,014 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 12:52:59,014 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 12:52:59,015 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 12:52:59,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 12:52:59,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 12:52:59,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 12:52:59,017 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 12:52:59,018 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 12:52:59,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 12:52:59,019 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 12:52:59,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 12:52:59,020 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 12:52:59,020 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 12:52:59,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 12:52:59,022 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 12:52:59,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 12:52:59,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 12:52:59,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 12:52:59,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 12:52:59,024 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 12:52:59,025 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 12:52:59,025 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 12:52:59,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 12:52:59,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 12:52:59,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 12:52:59,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 12:52:59,027 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 12:52:59,027 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 12:52:59,027 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 12:52:59,028 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 12:52:59,028 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 12:52:59,029 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-09 12:52:59,036 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 12:52:59,036 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 12:52:59,037 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 12:52:59,037 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 12:52:59,037 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 12:52:59,037 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 12:52:59,037 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 12:52:59,037 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 12:52:59,038 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 12:52:59,038 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 12:52:59,038 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 12:52:59,038 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 12:52:59,038 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 12:52:59,038 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 12:52:59,038 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 12:52:59,038 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 12:52:59,039 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 12:52:59,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 12:52:59,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 12:52:59,040 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 12:52:59,040 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 12:52:59,040 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 12:52:59,040 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 12:52:59,041 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 12:52:59,041 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_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76260ed82768318ee6f3ac3cb9cfff5a60080963 [2018-12-09 12:52:59,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 12:52:59,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 12:52:59,066 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 12:52:59,067 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 12:52:59,067 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 12:52:59,068 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/../../sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2018-12-09 12:52:59,101 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/data/d0a806113/6ba0d3e2ed4040fe9ac3d3a226f0a5aa/FLAG00565ba14 [2018-12-09 12:52:59,474 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 12:52:59,475 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/sv-benchmarks/c/loop-lit/gr2006_true-unreach-call_true-termination.c.i [2018-12-09 12:52:59,478 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/data/d0a806113/6ba0d3e2ed4040fe9ac3d3a226f0a5aa/FLAG00565ba14 [2018-12-09 12:52:59,486 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/data/d0a806113/6ba0d3e2ed4040fe9ac3d3a226f0a5aa [2018-12-09 12:52:59,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 12:52:59,488 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 12:52:59,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 12:52:59,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 12:52:59,492 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 12:52:59,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f0260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59, skipping insertion in model container [2018-12-09 12:52:59,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 12:52:59,512 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 12:52:59,600 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:52:59,602 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 12:52:59,610 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 12:52:59,618 INFO L195 MainTranslator]: Completed translation [2018-12-09 12:52:59,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59 WrapperNode [2018-12-09 12:52:59,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 12:52:59,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 12:52:59,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 12:52:59,619 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 12:52:59,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 12:52:59,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 12:52:59,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 12:52:59,637 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 12:52:59,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... [2018-12-09 12:52:59,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 12:52:59,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 12:52:59,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 12:52:59,648 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 12:52:59,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:52:59,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 12:52:59,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 12:52:59,789 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 12:52:59,789 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-12-09 12:52:59,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:52:59 BoogieIcfgContainer [2018-12-09 12:52:59,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 12:52:59,790 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 12:52:59,790 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 12:52:59,792 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 12:52:59,793 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 12:52:59,793 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 12:52:59" (1/3) ... [2018-12-09 12:52:59,793 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@523afff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:52:59, skipping insertion in model container [2018-12-09 12:52:59,793 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 12:52:59,793 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:52:59" (2/3) ... [2018-12-09 12:52:59,794 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@523afff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 12:52:59, skipping insertion in model container [2018-12-09 12:52:59,794 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 12:52:59,794 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:52:59" (3/3) ... [2018-12-09 12:52:59,795 INFO L375 chiAutomizerObserver]: Analyzing ICFG gr2006_true-unreach-call_true-termination.c.i [2018-12-09 12:52:59,828 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 12:52:59,828 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 12:52:59,828 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 12:52:59,829 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 12:52:59,829 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 12:52:59,829 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 12:52:59,829 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 12:52:59,829 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 12:52:59,829 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 12:52:59,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-12-09 12:52:59,850 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 12:52:59,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:52:59,850 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:52:59,854 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-09 12:52:59,854 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 12:52:59,854 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 12:52:59,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-12-09 12:52:59,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 12:52:59,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:52:59,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:52:59,855 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-09 12:52:59,855 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 12:52:59,860 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 7#L14-2true [2018-12-09 12:52:59,860 INFO L796 eck$LassoCheckResult]: Loop: 7#L14-2true assume !false; 3#L15true assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 10#L15-2true assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 7#L14-2true [2018-12-09 12:52:59,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:52:59,864 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-09 12:52:59,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:52:59,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:52:59,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:52:59,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:52:59,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:52:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:52:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:52:59,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:52:59,922 INFO L82 PathProgramCache]: Analyzing trace with hash 39825, now seen corresponding path program 1 times [2018-12-09 12:52:59,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:52:59,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:52:59,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:52:59,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:52:59,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:52:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:52:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:52:59,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:52:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2018-12-09 12:52:59,931 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:52:59,931 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:52:59,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:52:59,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:52:59,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:52:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:52:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:52:59,973 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:52:59,974 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:52:59,974 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:52:59,974 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:52:59,974 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 12:52:59,974 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:52:59,974 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:52:59,974 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:52:59,975 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2018-12-09 12:52:59,975 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:52:59,975 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:52:59,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,040 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:53:00,040 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,043 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:53:00,043 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,060 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 12:53:00,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:53:00,078 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 12:53:00,079 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:53:00,080 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:53:00,080 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:53:00,080 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:53:00,080 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 12:53:00,080 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,080 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:53:00,080 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:53:00,080 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration1_Loop [2018-12-09 12:53:00,080 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:53:00,080 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:53:00,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,116 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:53:00,119 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 12:53:00,120 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:53:00,121 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:53:00,122 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:53:00,122 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:53:00,122 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:53:00,122 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:53:00,124 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 12:53:00,124 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:53:00,127 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 12:53:00,131 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 12:53:00,131 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 12:53:00,132 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 12:53:00,132 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 12:53:00,133 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 12:53:00,133 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 99 Supporting invariants [] [2018-12-09 12:53:00,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 12:53:00,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,185 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 12:53:00,185 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-12-09 12:53:00,217 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 7 states. [2018-12-09 12:53:00,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 12:53:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 12:53:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 34 transitions. [2018-12-09 12:53:00,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 3 letters. [2018-12-09 12:53:00,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 4 letters. Loop has 3 letters. [2018-12-09 12:53:00,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 34 transitions. Stem has 1 letters. Loop has 6 letters. [2018-12-09 12:53:00,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2018-12-09 12:53:00,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 12:53:00,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 11 states and 14 transitions. [2018-12-09 12:53:00,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 12:53:00,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-09 12:53:00,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-12-09 12:53:00,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 12:53:00,227 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-12-09 12:53:00,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-12-09 12:53:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-12-09 12:53:00,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-12-09 12:53:00,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-12-09 12:53:00,242 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-09 12:53:00,243 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-12-09 12:53:00,243 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 12:53:00,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-12-09 12:53:00,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 12:53:00,243 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:53:00,243 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:53:00,243 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-09 12:53:00,243 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 12:53:00,243 INFO L794 eck$LassoCheckResult]: Stem: 102#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 103#L14-2 assume !false; 97#L15 [2018-12-09 12:53:00,244 INFO L796 eck$LassoCheckResult]: Loop: 97#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 98#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 104#L14-2 assume !false; 97#L15 [2018-12-09 12:53:00,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-09 12:53:00,244 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:53:00,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:53:00,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:53:00,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 1 times [2018-12-09 12:53:00,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:53:00,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:53:00,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:53:00,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,250 INFO L82 PathProgramCache]: Analyzing trace with hash 29865658, now seen corresponding path program 1 times [2018-12-09 12:53:00,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:53:00,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:53:00,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:53:00,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 12:53:00,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 12:53:00,279 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:53:00,280 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:53:00,280 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:53:00,280 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:53:00,280 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 12:53:00,280 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,280 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:53:00,280 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:53:00,280 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2018-12-09 12:53:00,280 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:53:00,280 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:53:00,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,320 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:53:00,320 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,322 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:53:00,322 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:53:00,326 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:53:00,326 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_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,341 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:53:00,341 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,357 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 12:53:00,357 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:53:00,364 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:53:00,364 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=50} Honda state: {ULTIMATE.start_main_~x~0=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=0}, {ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,378 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:53:00,379 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:53:00,381 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:53:00,381 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_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,395 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:53:00,396 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,412 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 12:53:00,412 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:53:00,441 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 12:53:00,442 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:53:00,442 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:53:00,442 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:53:00,442 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:53:00,442 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 12:53:00,442 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,442 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:53:00,442 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:53:00,442 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration2_Loop [2018-12-09 12:53:00,442 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:53:00,442 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:53:00,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,486 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:53:00,487 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 12:53:00,487 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:53:00,487 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:53:00,488 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:53:00,488 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:53:00,488 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:53:00,488 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:53:00,488 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 12:53:00,488 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:53:00,489 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 12:53:00,490 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:53:00,490 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:53:00,490 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:53:00,491 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:53:00,491 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:53:00,491 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:53:00,491 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 12:53:00,491 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:53:00,495 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 12:53:00,495 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:53:00,496 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:53:00,496 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:53:00,496 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:53:00,496 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:53:00,496 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:53:00,497 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 12:53:00,497 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:53:00,498 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 12:53:00,498 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:53:00,499 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:53:00,499 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:53:00,499 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:53:00,499 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:53:00,499 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:53:00,500 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 12:53:00,500 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:53:00,503 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 12:53:00,505 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 12:53:00,505 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 12:53:00,506 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 12:53:00,506 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 12:53:00,506 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 12:53:00,506 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-09 12:53:00,506 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 12:53:00,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,541 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 12:53:00,542 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-09 12:53:00,554 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 23 states and 29 transitions. Complement of second has 7 states. [2018-12-09 12:53:00,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 12:53:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 12:53:00,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-12-09 12:53:00,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 3 letters. [2018-12-09 12:53:00,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-09 12:53:00,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 6 letters. [2018-12-09 12:53:00,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2018-12-09 12:53:00,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 12:53:00,558 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 15 states and 19 transitions. [2018-12-09 12:53:00,558 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 12:53:00,558 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-09 12:53:00,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2018-12-09 12:53:00,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 12:53:00,558 INFO L705 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-12-09 12:53:00,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2018-12-09 12:53:00,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-09 12:53:00,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-09 12:53:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-12-09 12:53:00,560 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-12-09 12:53:00,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 12:53:00,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 12:53:00,562 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand 3 states. [2018-12-09 12:53:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:53:00,569 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-12-09 12:53:00,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 12:53:00,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-12-09 12:53:00,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 12:53:00,570 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2018-12-09 12:53:00,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-09 12:53:00,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-09 12:53:00,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2018-12-09 12:53:00,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 12:53:00,571 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-12-09 12:53:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2018-12-09 12:53:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-12-09 12:53:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-09 12:53:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2018-12-09 12:53:00,572 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-12-09 12:53:00,572 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2018-12-09 12:53:00,572 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 12:53:00,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2018-12-09 12:53:00,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 12:53:00,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 12:53:00,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 12:53:00,573 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-12-09 12:53:00,573 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 12:53:00,573 INFO L794 eck$LassoCheckResult]: Stem: 202#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~post1, main_#t~post2, main_#t~post3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := 0;main_~y~0 := 0; 203#L14-2 assume !false; 200#L15 assume main_~x~0 < 50;main_#t~post1 := main_~y~0;main_~y~0 := 1 + main_#t~post1;havoc main_#t~post1; 201#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 208#L14-2 assume !false; 198#L15 [2018-12-09 12:53:00,573 INFO L796 eck$LassoCheckResult]: Loop: 198#L15 assume !(main_~x~0 < 50);main_#t~post2 := main_~y~0;main_~y~0 := main_#t~post2 - 1;havoc main_#t~post2; 199#L15-2 assume !(main_~y~0 < 0);main_#t~post3 := main_~x~0;main_~x~0 := 1 + main_#t~post3;havoc main_#t~post3; 206#L14-2 assume !false; 198#L15 [2018-12-09 12:53:00,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,574 INFO L82 PathProgramCache]: Analyzing trace with hash 29863736, now seen corresponding path program 2 times [2018-12-09 12:53:00,574 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:53:00,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:53:00,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:53:00,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,580 INFO L82 PathProgramCache]: Analyzing trace with hash 44867, now seen corresponding path program 2 times [2018-12-09 12:53:00,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:53:00,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:53:00,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 12:53:00,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 12:53:00,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,584 INFO L82 PathProgramCache]: Analyzing trace with hash 612343980, now seen corresponding path program 1 times [2018-12-09 12:53:00,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 12:53:00,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 12:53:00,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,585 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-09 12:53:00,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 12:53:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,596 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 12:53:00,597 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 12:53:00,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 12:53:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,626 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 12:53:00,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-09 12:53:00,640 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:53:00,640 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:53:00,640 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:53:00,640 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:53:00,640 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 12:53:00,641 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,641 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:53:00,641 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:53:00,641 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2018-12-09 12:53:00,641 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:53:00,641 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:53:00,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,671 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:53:00,671 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,673 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:53:00,673 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:53:00,675 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 12:53:00,675 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_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,690 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 12:53:00,690 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_38dd8878-b67a-4b15-818b-ac17a776bda1/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,707 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 12:53:00,708 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 12:53:00,738 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 12:53:00,739 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 12:53:00,739 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 12:53:00,739 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 12:53:00,739 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 12:53:00,740 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 12:53:00,740 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 12:53:00,740 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 12:53:00,740 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 12:53:00,740 INFO L131 ssoRankerPreferences]: Filename of dumped script: gr2006_true-unreach-call_true-termination.c.i_Iteration3_Loop [2018-12-09 12:53:00,740 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 12:53:00,740 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 12:53:00,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 12:53:00,776 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 12:53:00,776 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 12:53:00,777 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 12:53:00,777 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 12:53:00,777 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 12:53:00,777 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 12:53:00,778 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 12:53:00,778 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 12:53:00,778 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 12:53:00,778 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 12:53:00,781 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 12:53:00,782 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 12:53:00,782 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-09 12:53:00,782 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 12:53:00,783 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 12:53:00,783 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 12:53:00,783 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-09 12:53:00,783 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 12:53:00,792 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,818 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 12:53:00,818 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-09 12:53:00,821 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2018-12-09 12:53:00,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-09 12:53:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 12:53:00,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-09 12:53:00,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-09 12:53:00,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,822 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 12:53:00,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,844 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 12:53:00,844 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-09 12:53:00,847 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 11 states and 13 transitions. Complement of second has 3 states. [2018-12-09 12:53:00,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-09 12:53:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 12:53:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-09 12:53:00,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-09 12:53:00,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,848 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-09 12:53:00,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 12:53:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 12:53:00,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 12:53:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 12:53:00,872 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-09 12:53:00,872 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-09 12:53:00,881 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 18 states and 22 transitions. Complement of second has 6 states. [2018-12-09 12:53:00,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-09 12:53:00,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 12:53:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2018-12-09 12:53:00,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2018-12-09 12:53:00,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 8 letters. Loop has 3 letters. [2018-12-09 12:53:00,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 6 letters. [2018-12-09 12:53:00,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 12:53:00,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 22 transitions. [2018-12-09 12:53:00,883 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 12:53:00,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2018-12-09 12:53:00,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 12:53:00,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 12:53:00,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 12:53:00,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 12:53:00,884 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:53:00,884 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:53:00,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 12:53:00,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 12:53:00,885 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-12-09 12:53:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 12:53:00,885 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-09 12:53:00,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 12:53:00,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-09 12:53:00,885 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 12:53:00,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 12:53:00,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 12:53:00,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 12:53:00,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 12:53:00,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 12:53:00,886 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:53:00,886 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:53:00,886 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 12:53:00,886 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 12:53:00,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 12:53:00,886 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 12:53:00,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 12:53:00,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 12:53:00 BoogieIcfgContainer [2018-12-09 12:53:00,891 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 12:53:00,891 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 12:53:00,891 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 12:53:00,891 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 12:53:00,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:52:59" (3/4) ... [2018-12-09 12:53:00,894 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 12:53:00,894 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 12:53:00,894 INFO L168 Benchmark]: Toolchain (without parser) took 1406.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Free memory was 956.0 MB in the beginning and 878.5 MB in the end (delta: 77.5 MB). Peak memory consumption was 168.8 MB. Max. memory is 11.5 GB. [2018-12-09 12:53:00,895 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:53:00,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.76 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 12:53:00,896 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.80 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:53:00,896 INFO L168 Benchmark]: Boogie Preprocessor took 11.43 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:53:00,896 INFO L168 Benchmark]: RCFGBuilder took 141.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -137.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-09 12:53:00,897 INFO L168 Benchmark]: BuchiAutomizer took 1100.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 878.5 MB in the end (delta: 199.0 MB). Peak memory consumption was 199.0 MB. Max. memory is 11.5 GB. [2018-12-09 12:53:00,897 INFO L168 Benchmark]: Witness Printer took 2.82 ms. Allocated memory is still 1.1 GB. Free memory is still 878.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 12:53:00,899 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 129.76 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 945.3 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 17.80 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.43 ms. Allocated memory is still 1.0 GB. Free memory is still 945.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 141.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 91.2 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -137.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1100.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 878.5 MB in the end (delta: 199.0 MB). Peak memory consumption was 199.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.82 ms. Allocated memory is still 1.1 GB. Free memory is still 878.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x + 99 and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 24 SDtfs, 27 SDslu, 19 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf91 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 13ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...