./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 36155f521cfe170e9c03fd915618e68821fe0430 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 12:49:58,701 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 12:49:58,702 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 12:49:58,708 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 12:49:58,708 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 12:49:58,708 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 12:49:58,709 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 12:49:58,710 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 12:49:58,711 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 12:49:58,711 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 12:49:58,711 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 12:49:58,711 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 12:49:58,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 12:49:58,712 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 12:49:58,713 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 12:49:58,713 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 12:49:58,714 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 12:49:58,714 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 12:49:58,715 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 12:49:58,716 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 12:49:58,717 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 12:49:58,717 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 12:49:58,718 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 12:49:58,718 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 12:49:58,718 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 12:49:58,719 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 12:49:58,719 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 12:49:58,720 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 12:49:58,720 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 12:49:58,721 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 12:49:58,721 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 12:49:58,721 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 12:49:58,721 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 12:49:58,721 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 12:49:58,722 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 12:49:58,722 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 12:49:58,722 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-01 12:49:58,730 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 12:49:58,730 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 12:49:58,731 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 12:49:58,731 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 12:49:58,731 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 12:49:58,731 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 12:49:58,731 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 12:49:58,731 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 12:49:58,732 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 12:49:58,732 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 12:49:58,733 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 12:49:58,733 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 12:49:58,733 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 12:49:58,733 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 12:49:58,733 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 12:49:58,733 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 12:49:58,733 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 12:49:58,733 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 12:49:58,733 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 12:49:58,734 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 12:49:58,734 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_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 -> 36155f521cfe170e9c03fd915618e68821fe0430 [2018-12-01 12:49:58,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 12:49:58,757 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 12:49:58,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 12:49:58,760 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 12:49:58,760 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 12:49:58,761 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-01 12:49:58,796 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/data/e4c3e5dec/abf9af74c9704e94a30f8ec7713a9b83/FLAG0c24bc60c [2018-12-01 12:49:59,279 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 12:49:59,279 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/sv-benchmarks/c/termination-crafted/Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-01 12:49:59,283 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/data/e4c3e5dec/abf9af74c9704e94a30f8ec7713a9b83/FLAG0c24bc60c [2018-12-01 12:49:59,782 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/data/e4c3e5dec/abf9af74c9704e94a30f8ec7713a9b83 [2018-12-01 12:49:59,784 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 12:49:59,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 12:49:59,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 12:49:59,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 12:49:59,789 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 12:49:59,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a63a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59, skipping insertion in model container [2018-12-01 12:49:59,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 12:49:59,807 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 12:49:59,887 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 12:49:59,889 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 12:49:59,898 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 12:49:59,905 INFO L195 MainTranslator]: Completed translation [2018-12-01 12:49:59,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59 WrapperNode [2018-12-01 12:49:59,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 12:49:59,906 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 12:49:59,906 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 12:49:59,906 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 12:49:59,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 12:49:59,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 12:49:59,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 12:49:59,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 12:49:59,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... [2018-12-01 12:49:59,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 12:49:59,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 12:49:59,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 12:49:59,936 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 12:49:59,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:49:59,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 12:49:59,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 12:50:00,068 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 12:50:00,068 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-01 12:50:00,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 12:50:00 BoogieIcfgContainer [2018-12-01 12:50:00,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 12:50:00,068 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 12:50:00,069 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 12:50:00,071 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 12:50:00,071 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 12:50:00,071 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 12:49:59" (1/3) ... [2018-12-01 12:50:00,072 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1849460c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 12:50:00, skipping insertion in model container [2018-12-01 12:50:00,072 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 12:50:00,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 12:49:59" (2/3) ... [2018-12-01 12:50:00,072 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1849460c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 12:50:00, skipping insertion in model container [2018-12-01 12:50:00,072 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 12:50:00,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 12:50:00" (3/3) ... [2018-12-01 12:50:00,073 INFO L375 chiAutomizerObserver]: Analyzing ICFG Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c [2018-12-01 12:50:00,107 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 12:50:00,107 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 12:50:00,107 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 12:50:00,107 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 12:50:00,107 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 12:50:00,107 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 12:50:00,108 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 12:50:00,108 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 12:50:00,108 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 12:50:00,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-01 12:50:00,129 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:00,129 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:00,129 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:00,134 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 12:50:00,134 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 12:50:00,134 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 12:50:00,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-01 12:50:00,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:00,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:00,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:00,135 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-01 12:50:00,135 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 12:50:00,139 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L26-2true [2018-12-01 12:50:00,140 INFO L796 eck$LassoCheckResult]: Loop: 8#L26-2true assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 6#L23true assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L26-2true [2018-12-01 12:50:00,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,145 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-01 12:50:00,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-01 12:50:00,203 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,203 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,212 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-01 12:50:00,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,259 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:00,260 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:00,260 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:00,260 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:00,260 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:50:00,260 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,260 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:00,260 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:00,260 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-01 12:50:00,260 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:00,260 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:00,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,348 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:00,349 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,352 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:00,352 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:00,371 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:50:00,371 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,374 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:00,374 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:00,390 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:50:00,390 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,392 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:00,393 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,415 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:50:00,415 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:00,434 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:50:00,435 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:00,435 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:00,435 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:00,435 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:00,435 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:50:00,435 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,435 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:00,435 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:00,435 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-01 12:50:00,435 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:00,436 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:00,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,477 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:00,480 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:50:00,481 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:00,482 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:00,482 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:00,482 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:00,482 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:00,484 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:50:00,484 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:50:00,488 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:50:00,489 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:00,489 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:00,489 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:00,489 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:00,489 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:00,491 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:50:00,491 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:50:00,495 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:50:00,495 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:00,495 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:00,495 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:50:00,496 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:00,496 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:00,496 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:00,496 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:50:00,496 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:50:00,501 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:50:00,505 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:50:00,505 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:50:00,507 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:50:00,507 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:50:00,507 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:50:00,507 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-01 12:50:00,508 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:50:00,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:00,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:00,538 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:00,555 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:00,555 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-12-01 12:50:00,598 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 8 states. [2018-12-01 12:50:00,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:00,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 12:50:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2018-12-01 12:50:00,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-01 12:50:00,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:00,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-01 12:50:00,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:00,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-01 12:50:00,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:00,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2018-12-01 12:50:00,605 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-01 12:50:00,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 19 transitions. [2018-12-01 12:50:00,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-01 12:50:00,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-12-01 12:50:00,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-12-01 12:50:00,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:50:00,609 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-12-01 12:50:00,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-12-01 12:50:00,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-12-01 12:50:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-01 12:50:00,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2018-12-01 12:50:00,624 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-12-01 12:50:00,624 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2018-12-01 12:50:00,625 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 12:50:00,625 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2018-12-01 12:50:00,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-01 12:50:00,625 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:00,625 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:00,625 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-01 12:50:00,625 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:50:00,625 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 88#L23 [2018-12-01 12:50:00,626 INFO L796 eck$LassoCheckResult]: Loop: 88#L23 assume !(main_~q~0 < main_~p~0); 89#L26 assume !(main_~p~0 < main_~q~0); 92#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 88#L23 [2018-12-01 12:50:00,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-01 12:50:00,626 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash 44836, now seen corresponding path program 1 times [2018-12-01 12:50:00,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:00,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 12:50:00,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 12:50:00,661 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-12-01 12:50:00,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-01 12:50:00,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-01 12:50:00,664 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-12-01 12:50:00,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 12:50:00,674 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2018-12-01 12:50:00,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-01 12:50:00,675 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2018-12-01 12:50:00,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:00,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 12 transitions. [2018-12-01 12:50:00,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 12:50:00,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-01 12:50:00,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2018-12-01 12:50:00,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:50:00,676 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-12-01 12:50:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2018-12-01 12:50:00,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-12-01 12:50:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-01 12:50:00,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-01 12:50:00,677 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-01 12:50:00,677 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-01 12:50:00,677 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-01 12:50:00,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-01 12:50:00,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:00,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:00,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:00,678 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-01 12:50:00,678 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:50:00,679 INFO L794 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 117#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 118#L23 assume !(main_~q~0 < main_~p~0); 114#L26 [2018-12-01 12:50:00,679 INFO L796 eck$LassoCheckResult]: Loop: 114#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 115#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 121#L23 assume !(main_~q~0 < main_~p~0); 114#L26 [2018-12-01 12:50:00,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,679 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-12-01 12:50:00,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash 47414, now seen corresponding path program 1 times [2018-12-01 12:50:00,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:00,693 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 1 times [2018-12-01 12:50:00,693 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:00,693 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:00,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:00,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:00,724 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:00,724 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:00,724 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:00,724 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:00,724 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:50:00,724 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,725 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:00,725 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:00,725 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-01 12:50:00,725 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:00,725 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:00,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,807 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:00,808 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,810 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:00,810 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:00,825 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:50:00,825 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,828 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:00,828 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,845 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:50:00,845 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:00,947 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:50:00,948 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:00,948 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:00,948 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:00,948 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:00,949 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:50:00,949 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:00,949 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:00,949 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:00,949 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-01 12:50:00,949 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:00,949 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:00,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:00,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,019 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:01,019 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:50:01,019 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:01,020 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:01,020 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:01,020 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:01,020 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:01,021 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:50:01,021 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:50:01,023 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:50:01,023 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:01,023 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:01,023 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:50:01,023 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:01,023 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:01,024 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:01,024 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:50:01,024 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:50:01,027 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:50:01,032 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:50:01,032 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:50:01,033 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:50:01,033 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:50:01,033 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:50:01,033 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-12-01 12:50:01,033 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:50:01,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,048 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:01,071 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-01 12:50:01,071 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-01 12:50:01,083 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 16 states and 20 transitions. Complement of second has 7 states. [2018-12-01 12:50:01,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:01,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:50:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-12-01 12:50:01,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-01 12:50:01,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-01 12:50:01,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-01 12:50:01,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2018-12-01 12:50:01,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:01,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 17 transitions. [2018-12-01 12:50:01,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-01 12:50:01,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-01 12:50:01,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-12-01 12:50:01,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:50:01,087 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-12-01 12:50:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-12-01 12:50:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-12-01 12:50:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-01 12:50:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-12-01 12:50:01,088 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-01 12:50:01,088 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-01 12:50:01,089 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-01 12:50:01,089 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-12-01 12:50:01,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:01,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:01,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:01,089 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-12-01 12:50:01,090 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 12:50:01,090 INFO L794 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 186#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 190#L23 assume !(main_~q~0 < main_~p~0); 192#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 184#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 191#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 182#L26-2 [2018-12-01 12:50:01,090 INFO L796 eck$LassoCheckResult]: Loop: 182#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 187#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 182#L26-2 [2018-12-01 12:50:01,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,090 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 1 times [2018-12-01 12:50:01,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:01,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-12-01 12:50:01,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,100 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:01,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,105 INFO L82 PathProgramCache]: Analyzing trace with hash 666829459, now seen corresponding path program 2 times [2018-12-01 12:50:01,105 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,105 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,106 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,136 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:01,136 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:01,136 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:01,136 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:01,136 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:50:01,136 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,136 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:01,136 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:01,136 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-12-01 12:50:01,136 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:01,136 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:01,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,180 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:01,180 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,182 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:01,182 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 [2018-12-01 12:50:01,198 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:50:01,198 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:01,215 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:50:01,216 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:01,216 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:01,216 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:01,216 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:01,216 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:50:01,217 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,217 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:01,217 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:01,217 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-12-01 12:50:01,217 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:01,217 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:01,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,274 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:01,274 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:50:01,274 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:01,275 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:01,275 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:50:01,275 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:01,275 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:01,275 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:01,276 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:50:01,276 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:50:01,279 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:50:01,282 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:50:01,282 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:50:01,282 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:50:01,282 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:50:01,282 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:50:01,282 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-01 12:50:01,283 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:50:01,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:01,303 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:01,303 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-01 12:50:01,311 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 34 transitions. Complement of second has 5 states. [2018-12-01 12:50:01,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:01,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 12:50:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-01 12:50:01,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-01 12:50:01,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-01 12:50:01,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-01 12:50:01,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2018-12-01 12:50:01,313 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:01,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 23 states and 30 transitions. [2018-12-01 12:50:01,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-01 12:50:01,314 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-01 12:50:01,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-12-01 12:50:01,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:50:01,314 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-01 12:50:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-12-01 12:50:01,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-12-01 12:50:01,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-12-01 12:50:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-12-01 12:50:01,315 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-12-01 12:50:01,315 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-12-01 12:50:01,315 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-01 12:50:01,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2018-12-01 12:50:01,316 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:01,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:01,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:01,316 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2018-12-01 12:50:01,316 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-01 12:50:01,316 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 272#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 273#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 276#L23 assume !(main_~q~0 < main_~p~0); 265#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 266#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 279#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 280#L26-2 [2018-12-01 12:50:01,316 INFO L796 eck$LassoCheckResult]: Loop: 280#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 281#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 280#L26-2 [2018-12-01 12:50:01,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,316 INFO L82 PathProgramCache]: Analyzing trace with hash 602336749, now seen corresponding path program 3 times [2018-12-01 12:50:01,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,317 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-12-01 12:50:01,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,327 INFO L82 PathProgramCache]: Analyzing trace with hash -974968848, now seen corresponding path program 4 times [2018-12-01 12:50:01,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,328 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,353 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:01,354 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:01,354 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:01,354 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:01,354 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:50:01,354 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,354 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:01,354 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:01,354 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-12-01 12:50:01,354 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:01,354 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:01,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,398 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:01,398 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,400 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:01,400 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:50:01,417 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:01,434 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:50:01,435 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:01,436 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:01,436 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:01,436 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:01,436 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:50:01,436 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,436 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:01,436 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:01,436 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-12-01 12:50:01,436 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:01,436 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:01,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,468 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:01,468 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:50:01,468 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:01,469 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:01,469 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:50:01,469 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:01,469 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:01,469 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:01,470 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:50:01,470 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:50:01,472 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:50:01,473 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:50:01,473 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:50:01,473 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:50:01,473 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:50:01,474 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:50:01,474 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-01 12:50:01,474 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:50:01,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,489 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:01,496 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:01,496 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-12-01 12:50:01,504 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 5 states. [2018-12-01 12:50:01,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 12:50:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-01 12:50:01,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-01 12:50:01,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,504 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:50:01,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,518 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:01,526 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:01,526 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-12-01 12:50:01,532 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 29 states and 38 transitions. Complement of second has 5 states. [2018-12-01 12:50:01,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 12:50:01,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-01 12:50:01,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-01 12:50:01,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,534 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:50:01,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:01,562 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:01,562 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12 Second operand 3 states. [2018-12-01 12:50:01,570 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 12. Second operand 3 states. Result 33 states and 45 transitions. Complement of second has 4 states. [2018-12-01 12:50:01,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 12:50:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-12-01 12:50:01,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-01 12:50:01,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-01 12:50:01,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 4 letters. [2018-12-01 12:50:01,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,571 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 45 transitions. [2018-12-01 12:50:01,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-12-01 12:50:01,572 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 36 transitions. [2018-12-01 12:50:01,572 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-12-01 12:50:01,573 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-12-01 12:50:01,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2018-12-01 12:50:01,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:50:01,573 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2018-12-01 12:50:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2018-12-01 12:50:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2018-12-01 12:50:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-01 12:50:01,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2018-12-01 12:50:01,574 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-12-01 12:50:01,574 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2018-12-01 12:50:01,574 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-01 12:50:01,574 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 22 transitions. [2018-12-01 12:50:01,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-12-01 12:50:01,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:01,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:01,575 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-12-01 12:50:01,575 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2018-12-01 12:50:01,575 INFO L794 eck$LassoCheckResult]: Stem: 503#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 504#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 512#L23 assume !(main_~q~0 < main_~p~0); 511#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 502#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 509#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 510#L26-2 [2018-12-01 12:50:01,575 INFO L796 eck$LassoCheckResult]: Loop: 510#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 505#L23 assume !(main_~q~0 < main_~p~0); 499#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 500#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 508#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 510#L26-2 [2018-12-01 12:50:01,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,575 INFO L82 PathProgramCache]: Analyzing trace with hash 925832528, now seen corresponding path program 5 times [2018-12-01 12:50:01,575 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,580 INFO L82 PathProgramCache]: Analyzing trace with hash 38328847, now seen corresponding path program 1 times [2018-12-01 12:50:01,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,581 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1292746272, now seen corresponding path program 6 times [2018-12-01 12:50:01,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:01,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,633 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:01,633 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:01,633 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:01,633 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:01,633 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:50:01,633 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,633 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:01,634 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:01,634 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-12-01 12:50:01,634 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:01,634 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:01,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,696 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:01,697 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,698 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:01,698 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 [2018-12-01 12:50:01,718 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:50:01,718 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:01,771 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:50:01,773 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:01,773 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:01,773 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:01,773 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:01,773 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:50:01,773 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,774 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:01,774 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:01,774 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-12-01 12:50:01,774 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:01,774 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:01,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,833 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:01,833 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:50:01,833 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:01,834 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:01,834 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:50:01,834 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:01,834 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:01,834 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:01,834 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 12:50:01,834 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:50:01,836 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:50:01,838 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:50:01,838 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:50:01,838 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:50:01,838 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:50:01,838 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:50:01,838 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0) = 1*ULTIMATE.start_main_~q~0 Supporting invariants [] [2018-12-01 12:50:01,838 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:50:01,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:01,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:01,869 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-12-01 12:50:01,869 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9 Second operand 6 states. [2018-12-01 12:50:01,901 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 22 transitions. cyclomatic complexity: 9. Second operand 6 states. Result 41 states and 58 transitions. Complement of second has 10 states. [2018-12-01 12:50:01,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-01 12:50:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 14 transitions. [2018-12-01 12:50:01,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 6 letters. Loop has 5 letters. [2018-12-01 12:50:01,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 11 letters. Loop has 5 letters. [2018-12-01 12:50:01,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 14 transitions. Stem has 6 letters. Loop has 10 letters. [2018-12-01 12:50:01,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:01,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 58 transitions. [2018-12-01 12:50:01,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:01,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 34 states and 48 transitions. [2018-12-01 12:50:01,904 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-12-01 12:50:01,904 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-12-01 12:50:01,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 48 transitions. [2018-12-01 12:50:01,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 12:50:01,904 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 48 transitions. [2018-12-01 12:50:01,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 48 transitions. [2018-12-01 12:50:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2018-12-01 12:50:01,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-01 12:50:01,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2018-12-01 12:50:01,906 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-12-01 12:50:01,906 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2018-12-01 12:50:01,906 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-01 12:50:01,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2018-12-01 12:50:01,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 12:50:01,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 12:50:01,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 12:50:01,907 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1] [2018-12-01 12:50:01,907 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 12:50:01,907 INFO L794 eck$LassoCheckResult]: Stem: 625#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~p~0, main_~q~0;havoc main_~p~0;havoc main_~q~0;main_~q~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~p~0 := main_#t~nondet1;havoc main_#t~nondet1; 626#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 637#L23 assume !(main_~q~0 < main_~p~0); 621#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 622#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 634#L23 assume main_~q~0 < main_~p~0;main_~q~0 := main_~q~0 - 1;main_~p~0 := main_#t~nondet2;havoc main_#t~nondet2; 635#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 631#L23 [2018-12-01 12:50:01,907 INFO L796 eck$LassoCheckResult]: Loop: 631#L23 assume !(main_~q~0 < main_~p~0); 633#L26 assume main_~p~0 < main_~q~0;main_~p~0 := main_~p~0 - 1;main_~q~0 := main_#t~nondet3;havoc main_#t~nondet3; 630#L26-2 assume !!((main_~q~0 > 0 && main_~p~0 > 0) && main_~p~0 != main_~q~0); 631#L23 [2018-12-01 12:50:01,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1363962694, now seen corresponding path program 7 times [2018-12-01 12:50:01,907 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,913 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 2 times [2018-12-01 12:50:01,913 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 12:50:01,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:01,917 INFO L82 PathProgramCache]: Analyzing trace with hash 872985485, now seen corresponding path program 8 times [2018-12-01 12:50:01,917 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 12:50:01,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 12:50:01,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-01 12:50:01,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 12:50:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 12:50:01,945 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:01,945 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:01,945 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:01,945 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:01,946 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 12:50:01,946 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:01,946 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:01,946 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:01,946 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-12-01 12:50:01,946 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:01,946 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:01,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:01,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:02,012 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:02,012 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 [2018-12-01 12:50:02,016 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:02,016 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:02,031 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:50:02,031 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 [2018-12-01 12:50:02,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:02,034 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:02,058 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 12:50:02,058 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 [2018-12-01 12:50:02,062 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 12:50:02,062 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1ae5b4ef-a66e-4729-8caa-4025f6f9710f/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 [2018-12-01 12:50:02,081 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 12:50:02,081 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 12:50:02,229 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 12:50:02,231 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 12:50:02,231 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 12:50:02,231 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 12:50:02,231 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 12:50:02,231 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 12:50:02,231 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 12:50:02,232 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 12:50:02,232 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 12:50:02,232 INFO L131 ssoRankerPreferences]: Filename of dumped script: Piecewise_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-12-01 12:50:02,232 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 12:50:02,232 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 12:50:02,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:02,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:02,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 12:50:02,305 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 12:50:02,305 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 12:50:02,305 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:02,305 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:02,305 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:02,306 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:02,306 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:02,306 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:50:02,306 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:50:02,308 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:50:02,308 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:02,308 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:02,308 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:02,308 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 12:50:02,308 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:02,309 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-01 12:50:02,309 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-01 12:50:02,310 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 12:50:02,310 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-01 12:50:02,311 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 12:50:02,311 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 12:50:02,311 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 12:50:02,311 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-01 12:50:02,311 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 12:50:02,312 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-01 12:50:02,312 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 12:50:02,316 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 12:50:02,318 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 12:50:02,318 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-01 12:50:02,319 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 12:50:02,319 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 12:50:02,319 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 12:50:02,319 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0) = 1*ULTIMATE.start_main_~p~0 Supporting invariants [] [2018-12-01 12:50:02,319 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 12:50:02,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:02,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:02,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:02,350 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:02,350 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-12-01 12:50:02,362 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 27 states and 40 transitions. Complement of second has 7 states. [2018-12-01 12:50:02,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:02,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:50:02,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-12-01 12:50:02,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-01 12:50:02,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:02,363 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:50:02,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:02,373 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:02,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:02,380 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:02,380 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-12-01 12:50:02,389 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 27 states and 40 transitions. Complement of second has 7 states. [2018-12-01 12:50:02,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:50:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-12-01 12:50:02,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-01 12:50:02,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:02,390 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-01 12:50:02,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 12:50:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:02,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 12:50:02,404 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 12:50:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 12:50:02,408 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-01 12:50:02,408 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17 Second operand 4 states. [2018-12-01 12:50:02,418 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 35 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 36 states and 57 transitions. Complement of second has 6 states. [2018-12-01 12:50:02,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-01 12:50:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 12:50:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-12-01 12:50:02,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-01 12:50:02,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:02,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 10 letters. Loop has 3 letters. [2018-12-01 12:50:02,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:02,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 6 letters. [2018-12-01 12:50:02,419 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 12:50:02,419 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 57 transitions. [2018-12-01 12:50:02,420 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 12:50:02,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2018-12-01 12:50:02,420 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 12:50:02,420 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 12:50:02,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 12:50:02,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 12:50:02,421 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 12:50:02,421 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 12:50:02,421 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 12:50:02,421 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-01 12:50:02,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-01 12:50:02,421 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 12:50:02,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-01 12:50:02,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 12:50:02 BoogieIcfgContainer [2018-12-01 12:50:02,425 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 12:50:02,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 12:50:02,425 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 12:50:02,425 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 12:50:02,425 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 12:50:00" (3/4) ... [2018-12-01 12:50:02,427 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 12:50:02,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 12:50:02,428 INFO L168 Benchmark]: Toolchain (without parser) took 2643.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 178.8 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -79.3 MB). Peak memory consumption was 99.4 MB. Max. memory is 11.5 GB. [2018-12-01 12:50:02,429 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 12:50:02,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.77 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-01 12:50:02,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.02 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 12:50:02,430 INFO L168 Benchmark]: Boogie Preprocessor took 10.99 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-01 12:50:02,430 INFO L168 Benchmark]: RCFGBuilder took 132.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 57.7 MB). Free memory was 939.9 MB in the beginning and 1.0 GB in the end (delta: -100.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-01 12:50:02,430 INFO L168 Benchmark]: BuchiAutomizer took 2356.35 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.3 MB). Peak memory consumption was 128.4 MB. Max. memory is 11.5 GB. [2018-12-01 12:50:02,431 INFO L168 Benchmark]: Witness Printer took 2.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 12:50:02,432 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.77 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.02 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.99 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 132.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 57.7 MB). Free memory was 939.9 MB in the beginning and 1.0 GB in the end (delta: -100.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2356.35 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.3 MB). Peak memory consumption was 128.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. One deterministic module has affine ranking function q and consists of 3 locations. One deterministic module has affine ranking function q and consists of 6 locations. One nondeterministic module has affine ranking function q and consists of 3 locations. One nondeterministic module has affine ranking function p 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 2.3s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 49 SDtfs, 56 SDslu, 9 SDs, 0 SdLazy, 120 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax162 hnf99 lsp61 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp93 dnf112 smp98 tf107 neg98 sie117 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 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...