./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 11:58:05,900 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 11:58:05,901 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 11:58:05,910 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 11:58:05,910 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 11:58:05,911 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 11:58:05,911 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 11:58:05,913 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 11:58:05,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 11:58:05,914 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 11:58:05,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 11:58:05,915 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 11:58:05,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 11:58:05,916 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 11:58:05,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 11:58:05,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 11:58:05,918 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 11:58:05,919 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 11:58:05,921 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 11:58:05,922 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 11:58:05,923 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 11:58:05,923 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 11:58:05,925 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 11:58:05,925 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 11:58:05,925 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 11:58:05,926 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 11:58:05,927 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 11:58:05,927 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 11:58:05,928 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 11:58:05,928 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 11:58:05,929 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 11:58:05,929 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 11:58:05,929 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 11:58:05,929 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 11:58:05,930 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 11:58:05,930 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 11:58:05,931 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 11:58:05,942 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 11:58:05,942 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 11:58:05,943 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 11:58:05,943 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 11:58:05,943 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 11:58:05,943 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 11:58:05,944 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 11:58:05,944 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 11:58:05,944 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 11:58:05,944 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 11:58:05,944 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 11:58:05,944 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 11:58:05,944 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 11:58:05,945 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 11:58:05,946 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 11:58:05,946 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 11:58:05,946 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 11:58:05,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 11:58:05,946 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 11:58:05,946 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 11:58:05,947 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 11:58:05,947 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_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2018-11-10 11:58:05,967 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 11:58:05,975 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 11:58:05,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 11:58:05,977 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 11:58:05,978 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 11:58:05,978 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-11-10 11:58:06,012 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/data/0eb1278ac/b476356dbde44d8482ec890dc42f2ded/FLAG4a75f696a [2018-11-10 11:58:06,404 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 11:58:06,404 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-11-10 11:58:06,409 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/data/0eb1278ac/b476356dbde44d8482ec890dc42f2ded/FLAG4a75f696a [2018-11-10 11:58:06,420 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/data/0eb1278ac/b476356dbde44d8482ec890dc42f2ded [2018-11-10 11:58:06,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 11:58:06,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 11:58:06,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 11:58:06,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 11:58:06,426 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 11:58:06,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc2202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06, skipping insertion in model container [2018-11-10 11:58:06,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 11:58:06,442 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 11:58:06,527 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:58:06,529 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 11:58:06,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 11:58:06,545 INFO L193 MainTranslator]: Completed translation [2018-11-10 11:58:06,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06 WrapperNode [2018-11-10 11:58:06,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 11:58:06,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 11:58:06,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 11:58:06,546 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 11:58:06,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 11:58:06,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 11:58:06,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 11:58:06,563 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 11:58:06,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... [2018-11-10 11:58:06,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 11:58:06,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 11:58:06,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 11:58:06,573 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 11:58:06,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 11:58:06,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 11:58:06,723 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 11:58:06,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:58:06 BoogieIcfgContainer [2018-11-10 11:58:06,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 11:58:06,724 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 11:58:06,724 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 11:58:06,726 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 11:58:06,726 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 11:58:06,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 11:58:06" (1/3) ... [2018-11-10 11:58:06,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bb149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:58:06, skipping insertion in model container [2018-11-10 11:58:06,727 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 11:58:06,727 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:58:06" (2/3) ... [2018-11-10 11:58:06,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3bb149a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 11:58:06, skipping insertion in model container [2018-11-10 11:58:06,727 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 11:58:06,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:58:06" (3/3) ... [2018-11-10 11:58:06,729 INFO L375 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-11-10 11:58:06,760 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 11:58:06,760 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 11:58:06,760 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 11:58:06,760 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 11:58:06,760 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 11:58:06,760 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 11:58:06,761 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 11:58:06,761 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 11:58:06,761 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 11:58:06,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-10 11:58:06,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 11:58:06,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:58:06,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:58:06,787 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 11:58:06,787 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:58:06,787 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 11:58:06,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-11-10 11:58:06,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 11:58:06,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:58:06,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:58:06,789 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 11:58:06,789 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:58:06,793 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 12#L27-2true [2018-11-10 11:58:06,794 INFO L795 eck$LassoCheckResult]: Loop: 12#L27-2true assume true; 7#L18-1true assume !!(main_~x~0 != 0 && main_~y~0 > 0); 9#L19true assume !(main_~x~0 > 0); 6#L27true assume main_#t~nondet4 != 0;havoc main_#t~nondet4;main_~x~0 := main_~x~0 + 1; 12#L27-2true [2018-11-10 11:58:06,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:06,797 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 11:58:06,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:06,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:06,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:06,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:06,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:06,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:06,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1114538, now seen corresponding path program 1 times [2018-11-10 11:58:06,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:06,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:06,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:06,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:06,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:06,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:06,870 INFO L82 PathProgramCache]: Analyzing trace with hash 889541740, now seen corresponding path program 1 times [2018-11-10 11:58:06,870 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:06,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:06,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:06,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:06,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:06,918 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:06,919 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:06,919 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:06,919 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:06,919 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:58:06,919 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:06,919 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:06,919 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:06,919 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 11:58:06,919 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:06,920 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:06,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:06,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:06,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:06,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:06,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,058 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:07,059 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,062 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,062 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,093 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:07,093 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,096 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,096 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,113 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:07,113 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,115 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,115 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,133 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:58:07,133 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,152 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:58:07,153 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:07,153 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:07,153 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:07,153 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:07,153 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:58:07,154 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,154 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:07,154 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:07,154 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 11:58:07,154 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:07,154 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:07,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,224 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:07,228 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:58:07,229 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:07,230 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:07,231 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:07,231 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:07,231 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:07,233 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:58:07,233 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:58:07,239 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:07,240 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:07,240 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:07,240 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:07,241 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:07,241 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:07,241 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:07,242 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:07,242 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:07,246 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:58:07,249 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:58:07,249 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 11:58:07,250 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:58:07,250 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:58:07,250 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:58:07,251 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 11:58:07,251 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:58:07,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:07,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:07,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:07,307 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 11:58:07,308 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 4 states. [2018-11-10 11:58:07,343 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 4 states. Result 36 states and 48 transitions. Complement of second has 8 states. [2018-11-10 11:58:07,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:58:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-11-10 11:58:07,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-10 11:58:07,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:07,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-10 11:58:07,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:07,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 8 letters. [2018-11-10 11:58:07,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:07,347 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 48 transitions. [2018-11-10 11:58:07,349 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-11-10 11:58:07,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 28 transitions. [2018-11-10 11:58:07,352 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-10 11:58:07,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-10 11:58:07,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2018-11-10 11:58:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:58:07,353 INFO L705 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2018-11-10 11:58:07,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2018-11-10 11:58:07,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-10 11:58:07,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-10 11:58:07,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-11-10 11:58:07,371 INFO L728 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-10 11:58:07,372 INFO L608 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-10 11:58:07,372 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 11:58:07,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2018-11-10 11:58:07,372 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-11-10 11:58:07,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:58:07,373 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:58:07,373 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 11:58:07,373 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:58:07,373 INFO L793 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 94#L27-2 assume true; 108#L18-1 [2018-11-10 11:58:07,373 INFO L795 eck$LassoCheckResult]: Loop: 108#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 109#L19 assume main_~x~0 > 0; 110#L20 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 111#L27-2 assume true; 108#L18-1 [2018-11-10 11:58:07,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,374 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-10 11:58:07,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:07,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:07,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:07,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1296054, now seen corresponding path program 1 times [2018-11-10 11:58:07,378 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:07,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:07,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:07,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1805982296, now seen corresponding path program 1 times [2018-11-10 11:58:07,383 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:07,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:07,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:07,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,405 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:07,406 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:07,406 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:07,406 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:07,406 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:58:07,406 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,406 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:07,406 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:07,406 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 11:58:07,406 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:07,406 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:07,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,468 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:07,468 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,474 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,475 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,492 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:07,492 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,494 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,494 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,519 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:07,520 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,526 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,526 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,542 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:07,542 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,547 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,547 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,549 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:07,549 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,565 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,565 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,583 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:58:07,583 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,614 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:58:07,615 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:07,615 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:07,615 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:07,615 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:07,615 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:58:07,615 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,615 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:07,615 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:07,615 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 11:58:07,615 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:07,616 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:07,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,673 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:07,673 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:58:07,673 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:07,674 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:07,674 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:07,674 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:07,674 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:07,676 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:58:07,676 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:58:07,681 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:07,681 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:07,682 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:07,682 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:07,682 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:07,682 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:07,683 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:58:07,683 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:58:07,689 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:07,690 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:07,694 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:07,694 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:07,694 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:07,694 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:07,694 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:07,695 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:07,695 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:07,696 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:07,696 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:07,697 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:07,697 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:07,697 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:07,697 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:07,697 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:07,698 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:07,698 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:07,699 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:07,699 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:07,700 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:07,700 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:07,700 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:07,700 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:07,700 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:07,701 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:07,701 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:07,704 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:58:07,707 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:58:07,707 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 11:58:07,707 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:58:07,707 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:58:07,708 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:58:07,708 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-10 11:58:07,708 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:58:07,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:07,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:07,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:07,784 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:07,785 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-10 11:58:07,799 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 48 states and 65 transitions. Complement of second has 7 states. [2018-11-10 11:58:07,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:58:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 11:58:07,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-10 11:58:07,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:07,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 11:58:07,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:07,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 8 letters. [2018-11-10 11:58:07,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:07,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 65 transitions. [2018-11-10 11:58:07,803 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-11-10 11:58:07,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 46 states and 62 transitions. [2018-11-10 11:58:07,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-10 11:58:07,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-11-10 11:58:07,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 62 transitions. [2018-11-10 11:58:07,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:58:07,805 INFO L705 BuchiCegarLoop]: Abstraction has 46 states and 62 transitions. [2018-11-10 11:58:07,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 62 transitions. [2018-11-10 11:58:07,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2018-11-10 11:58:07,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-10 11:58:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2018-11-10 11:58:07,809 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 55 transitions. [2018-11-10 11:58:07,809 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 55 transitions. [2018-11-10 11:58:07,809 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 11:58:07,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 55 transitions. [2018-11-10 11:58:07,810 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2018-11-10 11:58:07,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:58:07,810 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:58:07,810 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-10 11:58:07,810 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:58:07,811 INFO L793 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 207#L27-2 assume true; 222#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 214#L19 assume main_~x~0 > 0; 217#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 226#L27-2 [2018-11-10 11:58:07,811 INFO L795 eck$LassoCheckResult]: Loop: 226#L27-2 assume true; 234#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 233#L19 assume main_~x~0 > 0; 231#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 226#L27-2 [2018-11-10 11:58:07,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,811 INFO L82 PathProgramCache]: Analyzing trace with hash 889541484, now seen corresponding path program 1 times [2018-11-10 11:58:07,811 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:07,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:07,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:07,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1114282, now seen corresponding path program 1 times [2018-11-10 11:58:07,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:07,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:07,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:07,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:07,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1038571883, now seen corresponding path program 2 times [2018-11-10 11:58:07,826 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:07,826 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:07,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:07,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:07,870 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:07,871 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:07,871 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:07,871 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:07,871 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:58:07,871 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,871 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:07,871 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:07,871 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 11:58:07,871 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:07,871 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:07,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:07,955 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:07,956 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,962 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,962 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:07,967 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:07,967 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Honda state: {ULTIMATE.start_main_~y~0=1, ULTIMATE.start_main_#t~nondet3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:07,983 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:07,983 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,000 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:08,000 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,002 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,002 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,005 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:08,005 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,023 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,023 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,042 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:58:08,042 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,063 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:58:08,064 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:08,064 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:08,065 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:08,065 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:08,065 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:58:08,065 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,065 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:08,065 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:08,065 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 11:58:08,065 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:08,065 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:08,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,146 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:08,146 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:58:08,146 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,147 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,147 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,147 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,147 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,147 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,148 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:08,148 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,155 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:08,155 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,156 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,156 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,156 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,156 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,157 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:58:08,157 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:58:08,161 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:08,161 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,162 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,162 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,162 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,162 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-10 11:58:08,162 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,162 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-10 11:58:08,162 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,165 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:08,165 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,166 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,166 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,166 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,166 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,166 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,166 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:08,167 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,169 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:58:08,170 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:58:08,170 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 11:58:08,171 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:58:08,171 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:58:08,171 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:58:08,171 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 11:58:08,171 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:58:08,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:08,210 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 11:58:08,210 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 55 transitions. cyclomatic complexity: 22 Second operand 4 states. [2018-11-10 11:58:08,228 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 55 transitions. cyclomatic complexity: 22. Second operand 4 states. Result 60 states and 85 transitions. Complement of second has 8 states. [2018-11-10 11:58:08,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:58:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2018-11-10 11:58:08,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-10 11:58:08,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-10 11:58:08,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,230 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 6 letters. Loop has 8 letters. [2018-11-10 11:58:08,230 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 85 transitions. [2018-11-10 11:58:08,231 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2018-11-10 11:58:08,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 54 states and 75 transitions. [2018-11-10 11:58:08,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-11-10 11:58:08,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-11-10 11:58:08,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 75 transitions. [2018-11-10 11:58:08,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:58:08,232 INFO L705 BuchiCegarLoop]: Abstraction has 54 states and 75 transitions. [2018-11-10 11:58:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 75 transitions. [2018-11-10 11:58:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-11-10 11:58:08,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 11:58:08,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 71 transitions. [2018-11-10 11:58:08,235 INFO L728 BuchiCegarLoop]: Abstraction has 51 states and 71 transitions. [2018-11-10 11:58:08,235 INFO L608 BuchiCegarLoop]: Abstraction has 51 states and 71 transitions. [2018-11-10 11:58:08,235 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 11:58:08,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 71 transitions. [2018-11-10 11:58:08,236 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 13 [2018-11-10 11:58:08,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:58:08,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:58:08,236 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-10 11:58:08,236 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:58:08,236 INFO L793 eck$LassoCheckResult]: Stem: 362#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 360#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 361#L27-2 assume true; 375#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 368#L19 assume !(main_~x~0 > 0); 385#L27 assume !(main_#t~nondet4 != 0);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 382#L27-2 assume true; 383#L18-1 [2018-11-10 11:58:08,236 INFO L795 eck$LassoCheckResult]: Loop: 383#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 396#L19 assume !(main_~x~0 > 0); 397#L27 assume main_#t~nondet4 != 0;havoc main_#t~nondet4;main_~x~0 := main_~x~0 + 1; 403#L27-2 assume true; 383#L18-1 [2018-11-10 11:58:08,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1805990232, now seen corresponding path program 1 times [2018-11-10 11:58:08,237 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,237 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,238 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:08,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1303928, now seen corresponding path program 2 times [2018-11-10 11:58:08,242 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:08,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,248 INFO L82 PathProgramCache]: Analyzing trace with hash 960404303, now seen corresponding path program 1 times [2018-11-10 11:58:08,248 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,249 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:08,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,265 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:08,265 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:08,266 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:08,266 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:08,266 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:58:08,266 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,266 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:08,266 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:08,266 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 11:58:08,266 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:08,266 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:08,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,311 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:08,311 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,319 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,319 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,335 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:08,335 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,337 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,337 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,340 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:08,340 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-8} Honda state: {ULTIMATE.start_main_#t~nondet4=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,355 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,355 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,371 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:08,371 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,383 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,383 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,402 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:58:08,402 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,419 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:58:08,420 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:08,420 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:08,420 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:08,420 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:08,420 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:58:08,420 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,420 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:08,420 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:08,420 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 11:58:08,420 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:08,420 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:08,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,423 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,460 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:08,460 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:58:08,461 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,461 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,461 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,461 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,461 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,461 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,461 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:08,461 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,462 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:08,462 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,462 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,462 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,463 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,463 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-10 11:58:08,463 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,463 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-10 11:58:08,463 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,464 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:08,465 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,465 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,465 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,465 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,465 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,465 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,465 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:08,465 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,467 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:58:08,468 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:58:08,468 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 11:58:08,468 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:58:08,468 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:58:08,468 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:58:08,469 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 11:58:08,469 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:58:08,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:08,493 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:08,493 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-11-10 11:58:08,505 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28. Second operand 5 states. Result 72 states and 101 transitions. Complement of second has 7 states. [2018-11-10 11:58:08,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 11:58:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 11:58:08,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 11:58:08,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,505 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 11:58:08,512 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,515 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:08,530 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:08,530 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-11-10 11:58:08,542 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28. Second operand 5 states. Result 72 states and 101 transitions. Complement of second has 7 states. [2018-11-10 11:58:08,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:08,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 11:58:08,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 11:58:08,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 11:58:08,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,543 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 11:58:08,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,555 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:08,563 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:08,563 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28 Second operand 5 states. [2018-11-10 11:58:08,577 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 71 transitions. cyclomatic complexity: 28. Second operand 5 states. Result 109 states and 151 transitions. Complement of second has 9 states. [2018-11-10 11:58:08,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:08,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 11:58:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-11-10 11:58:08,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 11:58:08,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 11:58:08,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-10 11:58:08,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,579 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 151 transitions. [2018-11-10 11:58:08,581 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2018-11-10 11:58:08,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 80 states and 110 transitions. [2018-11-10 11:58:08,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-10 11:58:08,583 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-10 11:58:08,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 110 transitions. [2018-11-10 11:58:08,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:58:08,583 INFO L705 BuchiCegarLoop]: Abstraction has 80 states and 110 transitions. [2018-11-10 11:58:08,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 110 transitions. [2018-11-10 11:58:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2018-11-10 11:58:08,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 11:58:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 85 transitions. [2018-11-10 11:58:08,587 INFO L728 BuchiCegarLoop]: Abstraction has 60 states and 85 transitions. [2018-11-10 11:58:08,587 INFO L608 BuchiCegarLoop]: Abstraction has 60 states and 85 transitions. [2018-11-10 11:58:08,587 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 11:58:08,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 85 transitions. [2018-11-10 11:58:08,589 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2018-11-10 11:58:08,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:58:08,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:58:08,590 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-11-10 11:58:08,590 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:58:08,590 INFO L793 eck$LassoCheckResult]: Stem: 810#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 808#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 809#L27-2 assume true; 821#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 818#L19 assume main_~x~0 > 0; 819#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 839#L27-2 assume true; 837#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 835#L19 assume !(main_~x~0 > 0); 811#L27 [2018-11-10 11:58:08,590 INFO L795 eck$LassoCheckResult]: Loop: 811#L27 assume !(main_#t~nondet4 != 0);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 812#L27-2 assume true; 847#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 828#L19 assume !(main_~x~0 > 0); 811#L27 [2018-11-10 11:58:08,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,590 INFO L82 PathProgramCache]: Analyzing trace with hash 382139685, now seen corresponding path program 1 times [2018-11-10 11:58:08,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:08,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:08,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 11:58:08,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 11:58:08,637 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 11:58:08,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1763830, now seen corresponding path program 1 times [2018-11-10 11:58:08,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:08,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,660 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:08,660 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:08,660 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:08,660 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:08,660 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:58:08,660 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,660 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:08,660 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:08,660 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 11:58:08,660 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:08,660 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:08,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,710 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:08,711 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,712 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,713 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,714 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:08,715 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,731 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:08,731 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,748 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:58:08,748 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:08,800 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:58:08,801 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:08,801 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:08,801 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:08,801 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:08,801 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:58:08,801 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,801 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:08,801 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:08,802 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-10 11:58:08,802 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:08,802 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:08,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,842 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:08,842 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:58:08,842 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,843 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,843 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,843 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,843 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,843 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,843 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:08,843 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,844 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:08,844 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,844 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,845 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,845 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,845 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,846 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:58:08,846 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:58:08,847 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:08,847 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:08,848 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:08,848 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:08,848 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:08,848 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:08,848 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:08,848 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:08,849 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:08,850 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:58:08,852 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:58:08,852 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 11:58:08,852 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:58:08,852 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:58:08,852 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:58:08,852 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-10 11:58:08,853 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:58:08,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:08,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:08,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:08,880 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:08,880 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 85 transitions. cyclomatic complexity: 31 Second operand 4 states. [2018-11-10 11:58:08,895 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 85 transitions. cyclomatic complexity: 31. Second operand 4 states. Result 213 states and 297 transitions. Complement of second has 7 states. [2018-11-10 11:58:08,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:58:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-10 11:58:08,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-10 11:58:08,897 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 13 letters. Loop has 4 letters. [2018-11-10 11:58:08,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-10 11:58:08,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:08,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 297 transitions. [2018-11-10 11:58:08,901 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 21 [2018-11-10 11:58:08,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 159 states and 220 transitions. [2018-11-10 11:58:08,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-10 11:58:08,903 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2018-11-10 11:58:08,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 220 transitions. [2018-11-10 11:58:08,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:58:08,903 INFO L705 BuchiCegarLoop]: Abstraction has 159 states and 220 transitions. [2018-11-10 11:58:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 220 transitions. [2018-11-10 11:58:08,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 125. [2018-11-10 11:58:08,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-11-10 11:58:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 179 transitions. [2018-11-10 11:58:08,909 INFO L728 BuchiCegarLoop]: Abstraction has 125 states and 179 transitions. [2018-11-10 11:58:08,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 11:58:08,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 11:58:08,912 INFO L87 Difference]: Start difference. First operand 125 states and 179 transitions. Second operand 4 states. [2018-11-10 11:58:08,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 11:58:08,930 INFO L93 Difference]: Finished difference Result 95 states and 125 transitions. [2018-11-10 11:58:08,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 11:58:08,930 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 125 transitions. [2018-11-10 11:58:08,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:58:08,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 78 states and 103 transitions. [2018-11-10 11:58:08,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-10 11:58:08,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-11-10 11:58:08,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 103 transitions. [2018-11-10 11:58:08,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 11:58:08,932 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 103 transitions. [2018-11-10 11:58:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 103 transitions. [2018-11-10 11:58:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 51. [2018-11-10 11:58:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 11:58:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2018-11-10 11:58:08,935 INFO L728 BuchiCegarLoop]: Abstraction has 51 states and 70 transitions. [2018-11-10 11:58:08,935 INFO L608 BuchiCegarLoop]: Abstraction has 51 states and 70 transitions. [2018-11-10 11:58:08,935 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 11:58:08,935 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 51 states and 70 transitions. [2018-11-10 11:58:08,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 11:58:08,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 11:58:08,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 11:58:08,936 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2018-11-10 11:58:08,936 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 11:58:08,936 INFO L793 eck$LassoCheckResult]: Stem: 1367#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1365#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1366#L27-2 assume true; 1377#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 1371#L19 assume main_~x~0 > 0; 1374#L20 assume main_#t~nondet2 != 0;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 1383#L27-2 assume true; 1385#L18-1 [2018-11-10 11:58:08,936 INFO L795 eck$LassoCheckResult]: Loop: 1385#L18-1 assume !!(main_~x~0 != 0 && main_~y~0 > 0); 1384#L19 assume main_~x~0 > 0; 1380#L20 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 1381#L27-2 assume true; 1385#L18-1 [2018-11-10 11:58:08,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1805982234, now seen corresponding path program 3 times [2018-11-10 11:58:08,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 11:58:08,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1296054, now seen corresponding path program 2 times [2018-11-10 11:58:08,940 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,941 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:08,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:08,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2130957233, now seen corresponding path program 1 times [2018-11-10 11:58:08,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 11:58:08,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 11:58:08,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 11:58:08,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 11:58:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 11:58:08,973 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:08,973 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:08,973 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:08,973 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:08,973 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 11:58:08,973 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:08,974 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:08,974 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:08,974 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-10 11:58:08,974 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:08,974 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:08,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:08,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:09,001 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:09,001 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:09,002 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:09,002 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:09,005 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:09,005 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:09,021 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:09,021 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:09,037 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:09,037 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:09,039 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:09,039 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:09,055 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 11:58:09,055 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:09,059 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 11:58:09,059 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9dc01853-f432-44a2-a93b-e22e51d19b59/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:09,076 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 11:58:09,076 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 11:58:09,096 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 11:58:09,097 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 11:58:09,097 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 11:58:09,097 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 11:58:09,097 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 11:58:09,097 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 11:58:09,097 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 11:58:09,097 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 11:58:09,097 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 11:58:09,097 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-10 11:58:09,098 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 11:58:09,098 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 11:58:09,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:09,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:09,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:09,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:09,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 11:58:09,128 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 11:58:09,128 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 11:58:09,128 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:09,129 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:09,129 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:09,129 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:09,129 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:09,129 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:09,129 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:09,129 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:09,130 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:09,130 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:09,130 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:09,130 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:09,130 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:09,130 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:09,131 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 11:58:09,131 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 11:58:09,133 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 11:58:09,133 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 11:58:09,133 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 11:58:09,133 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 11:58:09,133 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 11:58:09,133 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 11:58:09,133 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 11:58:09,134 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 11:58:09,134 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 11:58:09,135 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 11:58:09,136 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 11:58:09,137 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 11:58:09,137 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 11:58:09,137 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 11:58:09,137 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 11:58:09,137 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-10 11:58:09,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 11:58:09,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:09,171 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:09,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:09,186 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:09,186 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26 Second operand 4 states. [2018-11-10 11:58:09,194 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 93 states and 130 transitions. Complement of second has 7 states. [2018-11-10 11:58:09,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:58:09,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 11:58:09,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 11:58:09,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:09,195 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 11:58:09,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:09,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:09,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:09,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:09,217 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:09,217 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26 Second operand 4 states. [2018-11-10 11:58:09,229 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 94 states and 132 transitions. Complement of second has 7 states. [2018-11-10 11:58:09,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:58:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 11:58:09,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 11:58:09,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:09,231 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 11:58:09,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 11:58:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:09,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 11:58:09,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 11:58:09,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 11:58:09,255 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 11:58:09,255 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26 Second operand 4 states. [2018-11-10 11:58:09,262 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 51 states and 70 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 103 states and 143 transitions. Complement of second has 8 states. [2018-11-10 11:58:09,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 11:58:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 11:58:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-11-10 11:58:09,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 11:58:09,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:09,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 11:58:09,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:09,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-10 11:58:09,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 11:58:09,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 143 transitions. [2018-11-10 11:58:09,265 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 11:58:09,265 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 0 states and 0 transitions. [2018-11-10 11:58:09,265 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 11:58:09,265 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 11:58:09,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 11:58:09,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 11:58:09,265 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:58:09,265 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:58:09,265 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 11:58:09,265 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-10 11:58:09,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 11:58:09,266 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 11:58:09,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 11:58:09,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 11:58:09 BoogieIcfgContainer [2018-11-10 11:58:09,270 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 11:58:09,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 11:58:09,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 11:58:09,271 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 11:58:09,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:58:06" (3/4) ... [2018-11-10 11:58:09,274 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 11:58:09,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 11:58:09,275 INFO L168 Benchmark]: Toolchain (without parser) took 2852.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 959.1 MB in the beginning and 943.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 169.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:09,276 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:58:09,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.43 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:09,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.45 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:58:09,276 INFO L168 Benchmark]: Boogie Preprocessor took 10.06 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:09,277 INFO L168 Benchmark]: RCFGBuilder took 150.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:09,277 INFO L168 Benchmark]: BuchiAutomizer took 2547.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 943.4 MB in the end (delta: 201.1 MB). Peak memory consumption was 201.1 MB. Max. memory is 11.5 GB. [2018-11-10 11:58:09,277 INFO L168 Benchmark]: Witness Printer took 3.46 ms. Allocated memory is still 1.2 GB. Free memory is still 943.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 11:58:09,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.43 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.45 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.06 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 150.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -198.9 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2547.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 943.4 MB in the end (delta: 201.1 MB). Peak memory consumption was 201.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.46 ms. Allocated memory is still 1.2 GB. Free memory is still 943.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x 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 -1 * x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 60 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 111 SDtfs, 121 SDslu, 59 SDs, 0 SdLazy, 138 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax161 hnf98 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf94 smp86 dnf100 smp100 tf113 neg98 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...