./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/aaron3_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_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/aaron3_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/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 b11f086006b59545dfe302b4d0afe0208312f571 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 21:59:17,205 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 21:59:17,207 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 21:59:17,213 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 21:59:17,213 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 21:59:17,214 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 21:59:17,214 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 21:59:17,215 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 21:59:17,217 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 21:59:17,217 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 21:59:17,218 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 21:59:17,218 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 21:59:17,219 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 21:59:17,219 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 21:59:17,220 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 21:59:17,221 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 21:59:17,221 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 21:59:17,222 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 21:59:17,224 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 21:59:17,225 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 21:59:17,225 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 21:59:17,226 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 21:59:17,228 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 21:59:17,228 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 21:59:17,228 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 21:59:17,229 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 21:59:17,229 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 21:59:17,230 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 21:59:17,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 21:59:17,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 21:59:17,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 21:59:17,231 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 21:59:17,231 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 21:59:17,231 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 21:59:17,232 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 21:59:17,232 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 21:59:17,232 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-02 21:59:17,240 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 21:59:17,240 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 21:59:17,241 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 21:59:17,241 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 21:59:17,241 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 21:59:17,241 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-02 21:59:17,241 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-02 21:59:17,241 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-02 21:59:17,241 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-02 21:59:17,241 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-02 21:59:17,241 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-02 21:59:17,241 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 21:59:17,242 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-02 21:59:17,242 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 21:59:17,243 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 21:59:17,243 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-02 21:59:17,243 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 21:59:17,243 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 21:59:17,243 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-02 21:59:17,243 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-02 21:59:17,244 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_edadc799-e75b-416f-b6a3-0f5eabf16250/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 -> b11f086006b59545dfe302b4d0afe0208312f571 [2018-12-02 21:59:17,260 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 21:59:17,267 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 21:59:17,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 21:59:17,270 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 21:59:17,270 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 21:59:17,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/aaron3_true-termination_true-valid-memsafety.c [2018-12-02 21:59:17,304 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/data/fcc141564/0a70275b020a48da815447a88790b43f/FLAG030f49c6a [2018-12-02 21:59:17,742 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 21:59:17,743 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/sv-benchmarks/c/termination-crafted/aaron3_true-termination_true-valid-memsafety.c [2018-12-02 21:59:17,746 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/data/fcc141564/0a70275b020a48da815447a88790b43f/FLAG030f49c6a [2018-12-02 21:59:17,755 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/data/fcc141564/0a70275b020a48da815447a88790b43f [2018-12-02 21:59:17,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 21:59:17,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 21:59:17,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 21:59:17,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 21:59:17,760 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 21:59:17,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ba821c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17, skipping insertion in model container [2018-12-02 21:59:17,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 21:59:17,775 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 21:59:17,857 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:59:17,859 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 21:59:17,868 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 21:59:17,876 INFO L195 MainTranslator]: Completed translation [2018-12-02 21:59:17,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17 WrapperNode [2018-12-02 21:59:17,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 21:59:17,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 21:59:17,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 21:59:17,877 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 21:59:17,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 21:59:17,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 21:59:17,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 21:59:17,896 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 21:59:17,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... [2018-12-02 21:59:17,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 21:59:17,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 21:59:17,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 21:59:17,936 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 21:59:17,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:17,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 21:59:17,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 21:59:18,059 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 21:59:18,059 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-02 21:59:18,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:59:18 BoogieIcfgContainer [2018-12-02 21:59:18,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 21:59:18,060 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-02 21:59:18,060 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-02 21:59:18,062 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-02 21:59:18,063 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 21:59:18,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 09:59:17" (1/3) ... [2018-12-02 21:59:18,064 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20f0b32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 09:59:18, skipping insertion in model container [2018-12-02 21:59:18,064 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 21:59:18,064 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:59:17" (2/3) ... [2018-12-02 21:59:18,064 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@20f0b32e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 09:59:18, skipping insertion in model container [2018-12-02 21:59:18,064 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 21:59:18,065 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:59:18" (3/3) ... [2018-12-02 21:59:18,066 INFO L375 chiAutomizerObserver]: Analyzing ICFG aaron3_true-termination_true-valid-memsafety.c [2018-12-02 21:59:18,111 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 21:59:18,111 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-02 21:59:18,111 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-02 21:59:18,112 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-02 21:59:18,112 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 21:59:18,112 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 21:59:18,112 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-02 21:59:18,112 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 21:59:18,112 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-02 21:59:18,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-12-02 21:59:18,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 21:59:18,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:59:18,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:59:18,139 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-02 21:59:18,139 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:59:18,139 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-02 21:59:18,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-12-02 21:59:18,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 21:59:18,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:59:18,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:59:18,140 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-12-02 21:59:18,140 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:59:18,145 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 6#L22true assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 7#L23true assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 9#L24true assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 12#L25true assume !!(main_~y~0 <= 1073741823); 13#L27-2true [2018-12-02 21:59:18,145 INFO L796 eck$LassoCheckResult]: Loop: 13#L27-2true assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 5#L27true assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := 1 + main_~y~0; 13#L27-2true [2018-12-02 21:59:18,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:18,149 INFO L82 PathProgramCache]: Analyzing trace with hash 29742506, now seen corresponding path program 1 times [2018-12-02 21:59:18,150 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:18,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:18,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:18,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:18,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1931, now seen corresponding path program 1 times [2018-12-02 21:59:18,224 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:18,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:18,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,225 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:18,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:18,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1482221836, now seen corresponding path program 1 times [2018-12-02 21:59:18,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:18,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:18,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:18,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,271 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:18,272 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:18,272 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:18,272 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:18,273 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:59:18,273 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,273 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:18,273 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:18,273 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-02 21:59:18,273 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:18,274 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:18,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,361 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:18,361 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,364 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:18,365 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:18,387 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:18,387 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_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,390 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:18,391 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:18,415 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:18,415 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_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,418 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:18,418 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,434 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:59:18,435 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:18,609 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:59:18,611 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:18,611 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:18,611 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:18,611 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:18,611 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:59:18,611 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,611 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:18,611 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:18,611 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-12-02 21:59:18,611 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:18,612 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:18,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,656 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:18,659 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:59:18,660 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:18,660 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:18,661 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:18,661 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:18,661 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:18,663 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:59:18,663 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:59:18,667 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:18,668 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:18,668 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:18,668 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:18,668 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:18,668 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:18,669 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:59:18,669 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:59:18,673 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:18,673 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:18,673 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:18,673 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:18,674 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:18,674 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:18,674 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:18,674 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:59:18,674 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:18,678 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:59:18,681 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 21:59:18,681 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 21:59:18,682 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:59:18,682 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 21:59:18,682 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:59:18,682 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~x~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-12-02 21:59:18,683 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 21:59:18,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:18,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:18,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:59:18,741 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 21:59:18,742 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 3 states. [2018-12-02 21:59:18,770 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 3 states. Result 31 states and 42 transitions. Complement of second has 8 states. [2018-12-02 21:59:18,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-02 21:59:18,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 21:59:18,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-12-02 21:59:18,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-02 21:59:18,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:18,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-02 21:59:18,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:18,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-02 21:59:18,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:18,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 42 transitions. [2018-12-02 21:59:18,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 21:59:18,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 12 states and 15 transitions. [2018-12-02 21:59:18,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-12-02 21:59:18,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-12-02 21:59:18,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2018-12-02 21:59:18,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:59:18,779 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-12-02 21:59:18,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2018-12-02 21:59:18,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-02 21:59:18,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 21:59:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2018-12-02 21:59:18,795 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-12-02 21:59:18,795 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-12-02 21:59:18,795 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-02 21:59:18,795 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 15 transitions. [2018-12-02 21:59:18,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-02 21:59:18,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:59:18,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:59:18,796 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:59:18,796 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-02 21:59:18,796 INFO L794 eck$LassoCheckResult]: Stem: 94#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 95#L22 assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 99#L23 assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 100#L24 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 101#L25 assume !!(main_~y~0 <= 1073741823); 103#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 96#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 92#L31 [2018-12-02 21:59:18,796 INFO L796 eck$LassoCheckResult]: Loop: 92#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 93#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 102#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 92#L31 [2018-12-02 21:59:18,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:18,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1482221843, now seen corresponding path program 1 times [2018-12-02 21:59:18,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:18,797 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:18,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:18,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:18,806 INFO L82 PathProgramCache]: Analyzing trace with hash 67272, now seen corresponding path program 1 times [2018-12-02 21:59:18,806 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:18,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:18,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:18,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:18,811 INFO L82 PathProgramCache]: Analyzing trace with hash -312117156, now seen corresponding path program 1 times [2018-12-02 21:59:18,811 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:18,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:18,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:18,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:18,845 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:18,845 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:18,845 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:18,846 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:18,846 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:59:18,846 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,846 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:18,846 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:18,846 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-12-02 21:59:18,846 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:18,846 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:18,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:18,900 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:18,901 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,902 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:18,903 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:18,926 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:18,927 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_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,930 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:18,930 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:18,933 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:18,933 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-1} Honda state: {ULTIMATE.start_main_#t~nondet4=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,948 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:18,948 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:18,963 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:18,963 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:18,966 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:18,966 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/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 [2018-12-02 21:59:18,985 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:59:18,985 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:31,904 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-12-02 21:59:31,912 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:31,912 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:31,912 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:31,912 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:31,913 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:59:31,913 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:31,913 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:31,913 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:31,913 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-12-02 21:59:31,913 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:31,913 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:31,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:31,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:31,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:31,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:31,985 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:31,986 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:59:31,986 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:31,987 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:31,987 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:31,987 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:31,987 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:31,988 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:59:31,988 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:59:31,990 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:31,991 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:31,991 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:31,991 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:31,991 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:31,991 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-02 21:59:31,991 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:31,992 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-02 21:59:31,992 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:31,994 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:31,994 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:31,995 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:31,995 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:31,995 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:31,995 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:31,996 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:59:31,996 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:59:32,000 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:32,000 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:32,001 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,001 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:32,001 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,001 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:32,001 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:32,002 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:59:32,002 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:32,008 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:32,008 INFO L497 LassoAnalysis]: Using template '2-nested'. [2018-12-02 21:59:32,009 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:32,009 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,010 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,010 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:32,010 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-02 21:59:32,011 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-12-02 21:59:32,012 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-12-02 21:59:32,014 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:32,014 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:32,014 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,015 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:32,015 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,015 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-02 21:59:32,015 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-02 21:59:32,015 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:59:32,015 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:32,019 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:32,019 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 [2018-12-02 21:59:32,019 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,020 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,020 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:32,020 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-02 21:59:32,021 INFO L402 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2018-12-02 21:59:32,021 INFO L403 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2018-12-02 21:59:32,026 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:32,026 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:32,027 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,027 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:32,027 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,028 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:32,028 INFO L207 nArgumentSynthesizer]: 3 template conjuncts. [2018-12-02 21:59:32,028 INFO L402 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2018-12-02 21:59:32,029 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:32,038 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:59:32,045 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-02 21:59:32,045 INFO L444 ModelExtractionUtils]: 7 out of 13 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 21:59:32,046 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:59:32,046 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 21:59:32,046 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:59:32,046 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 2*ULTIMATE.start_main_~z~0 f1 = 2*ULTIMATE.start_main_~tx~0 + 2*ULTIMATE.start_main_~z~0 + 2147483647 Supporting invariants [] [2018-12-02 21:59:32,047 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 21:59:32,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:32,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:32,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:59:32,180 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-02 21:59:32,180 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-12-02 21:59:32,259 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 15 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 17 states and 22 transitions. Complement of second has 6 states. [2018-12-02 21:59:32,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-02 21:59:32,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-02 21:59:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-12-02 21:59:32,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 3 letters. [2018-12-02 21:59:32,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:32,260 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 10 letters. Loop has 3 letters. [2018-12-02 21:59:32,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:32,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 7 letters. Loop has 6 letters. [2018-12-02 21:59:32,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:32,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-12-02 21:59:32,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:59:32,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2018-12-02 21:59:32,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-12-02 21:59:32,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-12-02 21:59:32,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-12-02 21:59:32,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:59:32,263 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-12-02 21:59:32,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-12-02 21:59:32,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-12-02 21:59:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-02 21:59:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2018-12-02 21:59:32,264 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2018-12-02 21:59:32,264 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2018-12-02 21:59:32,264 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-02 21:59:32,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2018-12-02 21:59:32,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:59:32,265 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:59:32,265 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:59:32,266 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 21:59:32,266 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:59:32,266 INFO L794 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 184#L22 assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 188#L23 assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 189#L24 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 190#L25 assume !!(main_~y~0 <= 1073741823); 192#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 193#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 179#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 181#L27-2 [2018-12-02 21:59:32,266 INFO L796 eck$LassoCheckResult]: Loop: 181#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 185#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := 1 + main_~y~0; 181#L27-2 [2018-12-02 21:59:32,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1295763161, now seen corresponding path program 2 times [2018-12-02 21:59:32,266 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:32,266 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:32,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:32,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1931, now seen corresponding path program 2 times [2018-12-02 21:59:32,277 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:32,277 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:32,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,278 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:59:32,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,282 INFO L82 PathProgramCache]: Analyzing trace with hash -312117149, now seen corresponding path program 1 times [2018-12-02 21:59:32,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:32,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:32,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:59:32,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,303 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:32,303 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:32,303 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:32,303 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:32,303 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:59:32,303 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:32,303 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:32,303 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:32,303 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-02 21:59:32,303 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:32,303 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:32,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,309 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,341 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:32,341 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:32,343 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:32,343 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:32,345 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:32,345 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:32,360 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:32,360 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:32,375 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:32,376 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:32,379 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:32,379 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:32,393 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 21:59:32,393 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/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 [2018-12-02 21:59:32,396 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:32,397 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/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 [2018-12-02 21:59:32,413 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:59:32,413 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:32,581 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:59:32,583 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:32,584 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:32,584 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:32,584 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:32,584 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:59:32,584 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:32,584 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:32,584 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:32,584 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-12-02 21:59:32,584 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:32,584 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:32,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,620 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:32,620 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:59:32,620 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:32,621 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,621 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:32,621 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,621 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:32,621 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:32,621 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:59:32,621 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:32,622 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:32,622 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:32,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,623 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,623 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:32,623 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:32,623 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 21:59:32,623 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 21:59:32,626 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 21:59:32,626 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:32,626 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:32,627 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:32,627 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:32,627 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:32,627 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:32,627 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:59:32,627 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:32,629 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:59:32,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 21:59:32,631 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 21:59:32,632 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:59:32,632 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 21:59:32,632 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:59:32,632 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-12-02 21:59:32,633 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 21:59:32,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:32,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:32,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:32,649 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:59:32,661 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 21:59:32,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-02 21:59:32,669 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 22 states and 29 transitions. Complement of second has 5 states. [2018-12-02 21:59:32,669 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 [2018-12-02 21:59:32,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 21:59:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-12-02 21:59:32,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-02 21:59:32,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:32,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-02 21:59:32,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:32,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 4 letters. [2018-12-02 21:59:32,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:32,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2018-12-02 21:59:32,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:59:32,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 18 states and 23 transitions. [2018-12-02 21:59:32,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-12-02 21:59:32,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-12-02 21:59:32,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 23 transitions. [2018-12-02 21:59:32,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 21:59:32,671 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-12-02 21:59:32,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 23 transitions. [2018-12-02 21:59:32,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-12-02 21:59:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-12-02 21:59:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2018-12-02 21:59:32,673 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-12-02 21:59:32,673 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 23 transitions. [2018-12-02 21:59:32,673 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-02 21:59:32,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 23 transitions. [2018-12-02 21:59:32,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 21:59:32,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 21:59:32,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 21:59:32,674 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1] [2018-12-02 21:59:32,674 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 21:59:32,674 INFO L794 eck$LassoCheckResult]: Stem: 272#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~z~0, main_~tx~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~tx~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~tx~0 := main_#t~nondet3;havoc main_#t~nondet3; 273#L22 assume !!(-1073741823 <= main_~tx~0 && main_~tx~0 <= 1073741823); 276#L23 assume !!(-1073741823 <= main_~z~0 && main_~z~0 <= 1073741823); 277#L24 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 278#L25 assume !!(main_~y~0 <= 1073741823); 280#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 281#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 267#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 268#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 282#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~tx~0 := main_~x~0;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 269#L31 assume !!(-1073741823 <= main_~x~0 && main_~x~0 <= 1073741823); 271#L27-2 [2018-12-02 21:59:32,674 INFO L796 eck$LassoCheckResult]: Loop: 271#L27-2 assume !!(main_~x~0 >= main_~y~0 && main_~x~0 <= main_~tx~0 + main_~z~0); 274#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := 1 + main_~y~0; 271#L27-2 [2018-12-02 21:59:32,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1085697206, now seen corresponding path program 3 times [2018-12-02 21:59:32,674 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:32,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:32,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 21:59:32,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1931, now seen corresponding path program 3 times [2018-12-02 21:59:32,686 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:32,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:32,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,687 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:59:32,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash 322038932, now seen corresponding path program 2 times [2018-12-02 21:59:32,690 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 21:59:32,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 21:59:32,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,691 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 21:59:32,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 21:59:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 21:59:32,716 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:32,716 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:32,716 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:32,716 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:32,716 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 21:59:32,716 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:32,716 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:32,716 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:32,716 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-12-02 21:59:32,717 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:32,717 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:32,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,725 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:32,771 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:32,771 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/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 [2018-12-02 21:59:32,773 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 21:59:32,773 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_edadc799-e75b-416f-b6a3-0f5eabf16250/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 [2018-12-02 21:59:32,790 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 21:59:32,791 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 21:59:33,005 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 21:59:33,007 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 21:59:33,007 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 21:59:33,007 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 21:59:33,007 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 21:59:33,007 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 21:59:33,007 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 21:59:33,007 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 21:59:33,007 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 21:59:33,007 INFO L131 ssoRankerPreferences]: Filename of dumped script: aaron3_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-12-02 21:59:33,007 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 21:59:33,008 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 21:59:33,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:33,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:33,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:33,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 21:59:33,074 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 21:59:33,074 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 21:59:33,074 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 21:59:33,074 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 21:59:33,074 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 21:59:33,074 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 21:59:33,075 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 21:59:33,075 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 21:59:33,075 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 21:59:33,075 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 21:59:33,076 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 21:59:33,078 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 21:59:33,078 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 21:59:33,078 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 21:59:33,078 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 21:59:33,078 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 21:59:33,078 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-12-02 21:59:33,078 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 21:59:33,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:33,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:33,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:59:33,108 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 21:59:33,108 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-12-02 21:59:33,115 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 5 states. [2018-12-02 21:59:33,116 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 [2018-12-02 21:59:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 21:59:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-12-02 21:59:33,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 11 letters. Loop has 2 letters. [2018-12-02 21:59:33,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:33,116 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 21:59:33,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:33,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:33,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:59:33,135 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 [2018-12-02 21:59:33,135 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-12-02 21:59:33,141 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 20 states and 25 transitions. Complement of second has 5 states. [2018-12-02 21:59:33,141 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 [2018-12-02 21:59:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 21:59:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-12-02 21:59:33,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 11 letters. Loop has 2 letters. [2018-12-02 21:59:33,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:33,142 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 21:59:33,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 21:59:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:33,157 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 21:59:33,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 21:59:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 21:59:33,165 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 [2018-12-02 21:59:33,165 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-12-02 21:59:33,172 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 23 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 23 states and 29 transitions. Complement of second has 4 states. [2018-12-02 21:59:33,172 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 [2018-12-02 21:59:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 21:59:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2018-12-02 21:59:33,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 11 letters. Loop has 2 letters. [2018-12-02 21:59:33,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:33,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2018-12-02 21:59:33,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:33,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 11 letters. Loop has 4 letters. [2018-12-02 21:59:33,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 21:59:33,173 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 29 transitions. [2018-12-02 21:59:33,174 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 21:59:33,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2018-12-02 21:59:33,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 21:59:33,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 21:59:33,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 21:59:33,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 21:59:33,175 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:59:33,175 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:59:33,175 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 21:59:33,175 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-02 21:59:33,175 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-02 21:59:33,175 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 21:59:33,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-02 21:59:33,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 09:59:33 BoogieIcfgContainer [2018-12-02 21:59:33,179 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-02 21:59:33,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 21:59:33,180 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 21:59:33,180 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 21:59:33,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:59:18" (3/4) ... [2018-12-02 21:59:33,182 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 21:59:33,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 21:59:33,183 INFO L168 Benchmark]: Toolchain (without parser) took 15425.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 204.5 MB). Free memory was 957.1 MB in the beginning and 1.2 GB in the end (delta: -203.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 11.5 GB. [2018-12-02 21:59:33,184 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:59:33,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.00 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:59:33,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:59:33,184 INFO L168 Benchmark]: Boogie Preprocessor took 39.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:59:33,185 INFO L168 Benchmark]: RCFGBuilder took 123.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2018-12-02 21:59:33,185 INFO L168 Benchmark]: BuchiAutomizer took 15119.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -52.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2018-12-02 21:59:33,186 INFO L168 Benchmark]: Witness Printer took 2.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 21:59:33,188 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.00 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.42 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 123.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 15119.51 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -52.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.84 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + -2 * y + 1 and consists of 5 locations. One deterministic module has 2-nested ranking function (if 2 * z > 0 then 1 else 0), (if 2 * z > 0 then 2 * z else 2 * tx + 2 * z + 2147483647) and consists of 4 locations. One deterministic module has affine ranking function -2 * y + 2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * y + 2 * x + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 14.5s. 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 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 60 SDtfs, 60 SDslu, 8 SDs, 0 SdLazy, 39 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax159 hnf100 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 5ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 13.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...