./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 687269bb6882b72a3d48999f1e5c55a1d5283a94 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:06:02,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:06:02,848 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:06:02,860 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:06:02,861 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:06:02,863 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:06:02,866 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:06:02,868 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:06:02,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:06:02,873 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:06:02,875 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:06:02,875 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:06:02,876 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:06:02,878 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:06:02,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:06:02,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:06:02,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:06:02,888 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:06:02,889 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:06:02,890 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:06:02,891 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:06:02,894 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:06:02,897 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:06:02,899 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:06:02,899 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:06:02,900 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:06:02,901 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:06:02,901 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:06:02,902 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:06:02,902 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:06:02,903 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:06:02,903 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:06:02,906 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:06:02,906 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:06:02,907 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:06:02,908 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:06:02,910 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:06:02,925 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:06:02,926 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:06:02,927 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:06:02,928 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:06:02,928 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:06:02,928 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:06:02,929 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:06:02,929 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:06:02,929 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:06:02,930 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:06:02,930 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:06:02,930 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:06:02,930 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:06:02,930 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:06:02,930 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:06:02,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:06:02,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:06:02,931 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:06:02,931 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:06:02,931 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:06:02,931 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:06:02,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:06:02,931 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:06:02,931 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:06:02,931 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:06:02,931 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:06:02,932 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:06:02,932 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:06:02,932 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_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 -> 687269bb6882b72a3d48999f1e5c55a1d5283a94 [2018-10-27 06:06:02,966 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:06:02,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:06:02,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:06:02,978 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:06:02,978 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:06:02,979 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 06:06:03,020 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/data/ac8ce5ca1/55038ac376e6489b9c82c5b6cb61e522/FLAG678dc78f0 [2018-10-27 06:06:03,416 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:06:03,417 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 06:06:03,423 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/data/ac8ce5ca1/55038ac376e6489b9c82c5b6cb61e522/FLAG678dc78f0 [2018-10-27 06:06:03,438 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/data/ac8ce5ca1/55038ac376e6489b9c82c5b6cb61e522 [2018-10-27 06:06:03,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:06:03,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:06:03,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:03,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:06:03,447 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:06:03,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03, skipping insertion in model container [2018-10-27 06:06:03,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:06:03,477 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:06:03,619 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:03,622 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:06:03,636 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:03,647 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:06:03,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03 WrapperNode [2018-10-27 06:06:03,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:03,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:03,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:06:03,650 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:06:03,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:03,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:06:03,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:06:03,677 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:06:03,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... [2018-10-27 06:06:03,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:06:03,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:06:03,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:06:03,699 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:06:03,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:06:03,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:06:04,145 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:06:04,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:04 BoogieIcfgContainer [2018-10-27 06:06:04,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:06:04,146 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:06:04,146 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:06:04,149 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:06:04,150 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:04,150 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:06:03" (1/3) ... [2018-10-27 06:06:04,152 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@391f8c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:04, skipping insertion in model container [2018-10-27 06:06:04,152 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:04,152 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:03" (2/3) ... [2018-10-27 06:06:04,153 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@391f8c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:04, skipping insertion in model container [2018-10-27 06:06:04,153 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:04,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:04" (3/3) ... [2018-10-27 06:06:04,154 INFO L375 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c [2018-10-27 06:06:04,206 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:06:04,206 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:06:04,206 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:06:04,206 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:06:04,207 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:06:04,207 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:06:04,207 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:06:04,207 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:06:04,207 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:06:04,220 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-10-27 06:06:04,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:06:04,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:04,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:04,278 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:04,278 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:04,279 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:06:04,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-10-27 06:06:04,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:06:04,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:04,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:04,282 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:04,282 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:04,296 INFO L793 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L25-2true [2018-10-27 06:06:04,296 INFO L795 eck$LassoCheckResult]: Loop: 10#L25-2true assume true; 11#L24-1true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 15#L25true assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 3#L26true assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 13#L26-2true main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L25-2true [2018-10-27 06:06:04,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:04,301 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:06:04,303 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:04,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:04,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:04,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:04,400 INFO L82 PathProgramCache]: Analyzing trace with hash 34542764, now seen corresponding path program 1 times [2018-10-27 06:06:04,400 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:04,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:04,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:04,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:04,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1805982250, now seen corresponding path program 1 times [2018-10-27 06:06:04,423 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:04,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:04,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:04,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:04,559 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:04,560 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:04,560 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:04,560 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:04,561 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:04,561 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:04,561 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:04,561 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:04,561 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-10-27 06:06:04,561 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:04,562 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:04,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:04,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:04,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:04,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:04,856 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:04,856 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:04,861 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:04,861 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:04,881 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:04,881 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:04,886 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:04,887 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:04,905 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:04,905 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:04,909 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:04,909 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:04,930 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:04,931 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:04,982 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:04,983 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:04,984 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:04,984 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:04,984 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:04,984 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:04,985 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:04,985 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:04,985 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:04,985 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-10-27 06:06:04,985 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:04,985 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:04,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,232 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:05,235 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:05,236 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 [2018-10-27 06:06:05,237 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:05,238 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:05,238 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:05,238 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:05,241 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:05,242 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:05,249 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:05,249 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 [2018-10-27 06:06:05,250 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:05,250 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:05,251 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:05,251 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:05,251 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:05,252 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:05,252 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:05,261 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:05,265 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:05,265 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:05,267 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:05,267 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:05,267 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:05,267 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:05,268 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:05,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:05,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:05,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:05,371 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 [2018-10-27 06:06:05,372 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states. Second operand 5 states. [2018-10-27 06:06:05,444 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states.. Second operand 5 states. Result 43 states and 55 transitions. Complement of second has 8 states. [2018-10-27 06:06:05,445 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 [2018-10-27 06:06:05,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:06:05,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2018-10-27 06:06:05,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 5 letters. [2018-10-27 06:06:05,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:05,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 7 letters. Loop has 5 letters. [2018-10-27 06:06:05,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:05,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 10 letters. [2018-10-27 06:06:05,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:05,450 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-10-27 06:06:05,452 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-10-27 06:06:05,456 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 25 states and 33 transitions. [2018-10-27 06:06:05,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-10-27 06:06:05,457 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-10-27 06:06:05,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 33 transitions. [2018-10-27 06:06:05,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:05,458 INFO L705 BuchiCegarLoop]: Abstraction has 25 states and 33 transitions. [2018-10-27 06:06:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 33 transitions. [2018-10-27 06:06:05,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2018-10-27 06:06:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 06:06:05,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2018-10-27 06:06:05,478 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-10-27 06:06:05,478 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2018-10-27 06:06:05,478 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:06:05,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2018-10-27 06:06:05,479 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-10-27 06:06:05,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:05,479 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:05,480 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:06:05,480 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:05,480 INFO L793 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 108#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 109#L25-2 assume true; 122#L24-1 [2018-10-27 06:06:05,480 INFO L795 eck$LassoCheckResult]: Loop: 122#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 126#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 110#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 111#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 121#L25-2 assume true; 122#L24-1 [2018-10-27 06:06:05,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:05,480 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-10-27 06:06:05,480 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:05,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:05,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:05,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:05,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:05,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 40178176, now seen corresponding path program 1 times [2018-10-27 06:06:05,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:05,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:05,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:05,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:05,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:05,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:05,494 INFO L82 PathProgramCache]: Analyzing trace with hash 150876830, now seen corresponding path program 1 times [2018-10-27 06:06:05,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:05,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:05,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:05,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:05,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:05,555 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:05,556 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:05,556 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:05,556 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:05,556 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:05,556 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:05,556 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:05,556 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:05,556 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-10-27 06:06:05,557 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:05,557 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:05,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,764 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:06:05,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:05,987 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:05,987 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:05,991 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:05,991 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,008 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,008 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,011 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,011 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,032 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,032 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,036 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,037 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,075 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:06,075 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,097 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:06,098 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:06,098 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:06,098 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:06,099 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:06,099 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:06,099 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,099 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:06,099 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:06,099 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-10-27 06:06:06,099 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:06,099 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:06,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,202 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:06,202 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:06,202 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 [2018-10-27 06:06:06,203 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:06,203 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:06,203 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:06,203 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:06,205 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:06,205 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:06,212 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:06,212 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 [2018-10-27 06:06:06,213 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:06,213 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:06,213 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:06,213 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:06,214 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:06,215 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:06,223 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:06,223 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 [2018-10-27 06:06:06,224 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:06,224 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:06,224 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:06,225 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:06,225 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:06,225 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:06,226 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:06,234 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:06,239 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:06,239 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:06,240 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:06,240 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:06,240 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:06,240 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:06,241 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:06,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:06,336 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:06,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:06,368 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 [2018-10-27 06:06:06,369 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 10 Second operand 4 states. [2018-10-27 06:06:06,384 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 38 states and 52 transitions. Complement of second has 7 states. [2018-10-27 06:06:06,385 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 [2018-10-27 06:06:06,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-10-27 06:06:06,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 5 letters. [2018-10-27 06:06:06,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:06,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 8 letters. Loop has 5 letters. [2018-10-27 06:06:06,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:06,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 3 letters. Loop has 10 letters. [2018-10-27 06:06:06,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:06,388 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 52 transitions. [2018-10-27 06:06:06,390 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:06:06,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 41 transitions. [2018-10-27 06:06:06,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-10-27 06:06:06,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-10-27 06:06:06,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 41 transitions. [2018-10-27 06:06:06,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:06,391 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-10-27 06:06:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 41 transitions. [2018-10-27 06:06:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2018-10-27 06:06:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-27 06:06:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2018-10-27 06:06:06,393 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2018-10-27 06:06:06,393 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2018-10-27 06:06:06,394 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:06:06,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 35 transitions. [2018-10-27 06:06:06,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:06:06,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:06,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:06,395 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:06,395 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:06,395 INFO L793 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 217#L25-2 assume true; 236#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 229#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 223#L33 [2018-10-27 06:06:06,395 INFO L795 eck$LassoCheckResult]: Loop: 223#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 214#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 215#L25-2 assume true; 235#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 234#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 223#L33 [2018-10-27 06:06:06,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,396 INFO L82 PathProgramCache]: Analyzing trace with hash 28694895, now seen corresponding path program 1 times [2018-10-27 06:06:06,396 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:06,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:06,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:06,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,401 INFO L82 PathProgramCache]: Analyzing trace with hash 54493901, now seen corresponding path program 1 times [2018-10-27 06:06:06,402 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:06,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:06,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:06,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:06,409 INFO L82 PathProgramCache]: Analyzing trace with hash -771858913, now seen corresponding path program 1 times [2018-10-27 06:06:06,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:06,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:06,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:06,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:06,457 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:06,458 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:06,458 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:06,458 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:06,458 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:06,458 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,458 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:06,458 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:06,458 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-10-27 06:06:06,459 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:06,459 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:06,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,593 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:06,593 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,596 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,596 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,600 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,600 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,617 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,617 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,633 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,633 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,637 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,637 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,662 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:06,662 INFO L446 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_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,665 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:06,665 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:06,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:06,683 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:06,781 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:06,782 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:06,782 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:06,783 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:06,783 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:06,783 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:06,783 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:06,783 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:06,783 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:06,783 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-10-27 06:06:06,783 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:06,783 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:06,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:06,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,057 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:07,057 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:07,059 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 [2018-10-27 06:06:07,060 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,060 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:07,060 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,061 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:07,061 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,061 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:07,061 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:07,063 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:07,063 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 [2018-10-27 06:06:07,063 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,064 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,064 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:07,064 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,065 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:07,065 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:07,073 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:07,073 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 [2018-10-27 06:06:07,074 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,074 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,074 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:07,074 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,077 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:07,077 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:07,079 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:07,079 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 [2018-10-27 06:06:07,080 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,080 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:07,080 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,080 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:07,080 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,081 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:07,081 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:07,088 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:07,098 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:07,099 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:07,099 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:07,099 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:07,099 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:07,099 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:07,100 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:07,112 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:07,116 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:07,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:07,133 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 [2018-10-27 06:06:07,133 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-10-27 06:06:07,162 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 41 states and 58 transitions. Complement of second has 7 states. [2018-10-27 06:06:07,163 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 [2018-10-27 06:06:07,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:07,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-10-27 06:06:07,163 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 5 letters. [2018-10-27 06:06:07,163 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:07,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 10 letters. Loop has 5 letters. [2018-10-27 06:06:07,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:07,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 10 letters. [2018-10-27 06:06:07,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:07,164 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 58 transitions. [2018-10-27 06:06:07,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:06:07,167 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 34 states and 47 transitions. [2018-10-27 06:06:07,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-10-27 06:06:07,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-10-27 06:06:07,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-10-27 06:06:07,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:07,169 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-10-27 06:06:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-10-27 06:06:07,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2018-10-27 06:06:07,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-10-27 06:06:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2018-10-27 06:06:07,172 INFO L728 BuchiCegarLoop]: Abstraction has 32 states and 44 transitions. [2018-10-27 06:06:07,172 INFO L608 BuchiCegarLoop]: Abstraction has 32 states and 44 transitions. [2018-10-27 06:06:07,173 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:06:07,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 44 transitions. [2018-10-27 06:06:07,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:06:07,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:07,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:07,174 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:07,174 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:07,174 INFO L793 eck$LassoCheckResult]: Stem: 346#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 340#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 341#L25-2 assume true; 362#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 353#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 347#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 338#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 339#L25-2 assume true; 360#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 358#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 342#L26 [2018-10-27 06:06:07,174 INFO L795 eck$LassoCheckResult]: Loop: 342#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 343#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 337#L25-2 assume true; 361#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 359#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 342#L26 [2018-10-27 06:06:07,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash -770011880, now seen corresponding path program 1 times [2018-10-27 06:06:07,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:07,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:07,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:07,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,182 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,182 INFO L82 PathProgramCache]: Analyzing trace with hash 45914084, now seen corresponding path program 2 times [2018-10-27 06:06:07,182 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:07,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:07,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:07,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,188 INFO L82 PathProgramCache]: Analyzing trace with hash 863084845, now seen corresponding path program 1 times [2018-10-27 06:06:07,188 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:07,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:07,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,189 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:07,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,213 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:07,213 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:07,213 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:07,213 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:07,213 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:07,213 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,214 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:07,214 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:07,214 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-10-27 06:06:07,214 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:07,214 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:07,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,272 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:07,272 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:07,277 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,277 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,280 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,280 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:07,297 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,297 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,312 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,313 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/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 [2018-10-27 06:06:07,315 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,315 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,331 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:07,331 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,335 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:07,335 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,357 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:07,357 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:07,473 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:07,474 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:07,474 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:07,474 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:07,474 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:07,474 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:07,474 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,475 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:07,475 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:07,475 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-10-27 06:06:07,475 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:07,475 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:07,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,631 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:06:07,675 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:07,675 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:07,676 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 [2018-10-27 06:06:07,676 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,676 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:07,676 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,677 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:07,677 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,677 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:06:07,677 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:07,683 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:07,684 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 [2018-10-27 06:06:07,684 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,684 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,684 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:07,684 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,686 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:07,686 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:07,692 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:07,692 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 [2018-10-27 06:06:07,693 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,693 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,693 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:07,693 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,694 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:07,694 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:07,699 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:07,700 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 [2018-10-27 06:06:07,700 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:07,700 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:07,701 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:07,701 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:07,701 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:07,701 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:07,702 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:07,709 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:07,712 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:07,712 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:07,713 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:07,713 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:07,713 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:07,713 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:07,713 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:07,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:07,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:07,750 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:07,770 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 [2018-10-27 06:06:07,770 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 44 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-10-27 06:06:07,811 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 44 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 109 states and 146 transitions. Complement of second has 7 states. [2018-10-27 06:06:07,815 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 [2018-10-27 06:06:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:07,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2018-10-27 06:06:07,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2018-10-27 06:06:07,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:07,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:06:07,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:07,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 10 letters. Loop has 10 letters. [2018-10-27 06:06:07,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:07,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 146 transitions. [2018-10-27 06:06:07,819 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-10-27 06:06:07,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 75 states and 100 transitions. [2018-10-27 06:06:07,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2018-10-27 06:06:07,820 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2018-10-27 06:06:07,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 100 transitions. [2018-10-27 06:06:07,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:07,821 INFO L705 BuchiCegarLoop]: Abstraction has 75 states and 100 transitions. [2018-10-27 06:06:07,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states and 100 transitions. [2018-10-27 06:06:07,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 57. [2018-10-27 06:06:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-27 06:06:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2018-10-27 06:06:07,826 INFO L728 BuchiCegarLoop]: Abstraction has 57 states and 78 transitions. [2018-10-27 06:06:07,826 INFO L608 BuchiCegarLoop]: Abstraction has 57 states and 78 transitions. [2018-10-27 06:06:07,826 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:06:07,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 78 transitions. [2018-10-27 06:06:07,828 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2018-10-27 06:06:07,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:07,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:07,828 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:07,828 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:07,829 INFO L793 eck$LassoCheckResult]: Stem: 558#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 551#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 552#L25-2 assume true; 589#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 586#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 583#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 549#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 550#L25-2 assume true; 588#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 584#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 585#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 554#L26-2 [2018-10-27 06:06:07,829 INFO L795 eck$LassoCheckResult]: Loop: 554#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 569#L25-2 assume true; 566#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 567#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 553#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 554#L26-2 [2018-10-27 06:06:07,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1899435516, now seen corresponding path program 1 times [2018-10-27 06:06:07,829 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:07,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:07,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:07,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,840 INFO L82 PathProgramCache]: Analyzing trace with hash 49137376, now seen corresponding path program 2 times [2018-10-27 06:06:07,840 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:07,840 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:07,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:07,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1043084741, now seen corresponding path program 1 times [2018-10-27 06:06:07,858 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:07,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:07,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,860 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:07,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:07,937 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:07,937 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:07,937 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:07,937 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:07,937 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:07,937 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:07,937 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:07,938 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:07,938 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-10-27 06:06:07,938 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:07,938 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:07,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:07,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,003 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:08,004 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,012 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:08,012 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:08,033 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:08,033 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,038 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:08,038 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:08,056 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:08,056 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,060 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:08,060 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:08,064 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:08,064 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,081 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:08,081 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,103 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:08,103 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:08,130 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:08,131 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:08,132 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:08,132 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:08,132 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:08,132 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:08,132 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,132 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:08,132 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:08,132 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-10-27 06:06:08,132 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:08,132 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:08,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,237 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:08,237 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:08,237 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 [2018-10-27 06:06:08,238 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,238 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,239 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,239 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,240 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:08,240 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:08,242 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,243 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 [2018-10-27 06:06:08,243 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,243 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:08,247 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,247 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:08,248 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,248 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:06:08,248 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:08,251 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,254 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 [2018-10-27 06:06:08,254 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,254 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,255 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,255 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,256 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:08,256 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:08,260 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,264 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 [2018-10-27 06:06:08,265 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,265 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:08,265 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,265 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,265 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,266 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:08,266 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:08,273 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:08,277 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:08,277 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:08,277 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:08,277 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:08,277 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:08,278 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:08,278 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:08,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:08,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:08,312 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:08,331 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 [2018-10-27 06:06:08,331 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 57 states and 78 transitions. cyclomatic complexity: 28 Second operand 4 states. [2018-10-27 06:06:08,362 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 57 states and 78 transitions. cyclomatic complexity: 28. Second operand 4 states. Result 143 states and 195 transitions. Complement of second has 7 states. [2018-10-27 06:06:08,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-10-27 06:06:08,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 5 letters. [2018-10-27 06:06:08,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:08,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 5 letters. [2018-10-27 06:06:08,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:08,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 10 letters. [2018-10-27 06:06:08,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:08,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 195 transitions. [2018-10-27 06:06:08,367 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2018-10-27 06:06:08,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 114 states and 153 transitions. [2018-10-27 06:06:08,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-10-27 06:06:08,369 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2018-10-27 06:06:08,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 153 transitions. [2018-10-27 06:06:08,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:08,369 INFO L705 BuchiCegarLoop]: Abstraction has 114 states and 153 transitions. [2018-10-27 06:06:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 153 transitions. [2018-10-27 06:06:08,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2018-10-27 06:06:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-10-27 06:06:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 130 transitions. [2018-10-27 06:06:08,376 INFO L728 BuchiCegarLoop]: Abstraction has 94 states and 130 transitions. [2018-10-27 06:06:08,376 INFO L608 BuchiCegarLoop]: Abstraction has 94 states and 130 transitions. [2018-10-27 06:06:08,376 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:06:08,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states and 130 transitions. [2018-10-27 06:06:08,377 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2018-10-27 06:06:08,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:08,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:08,378 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:08,378 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:08,378 INFO L793 eck$LassoCheckResult]: Stem: 828#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 823#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 824#L25-2 assume true; 864#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 909#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 908#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 906#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 905#L25-2 assume true; 904#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 903#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 898#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 902#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 901#L25-2 assume true; 892#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 893#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 896#L26 [2018-10-27 06:06:08,378 INFO L795 eck$LassoCheckResult]: Loop: 896#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 837#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 820#L25-2 assume true; 890#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 891#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 896#L26 [2018-10-27 06:06:08,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1372736639, now seen corresponding path program 2 times [2018-10-27 06:06:08,378 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:08,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:08,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:08,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash 45914084, now seen corresponding path program 3 times [2018-10-27 06:06:08,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:08,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:08,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,389 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:08,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1954780634, now seen corresponding path program 3 times [2018-10-27 06:06:08,396 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:08,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:08,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,397 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:08,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:08,437 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:08,437 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:08,437 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:08,437 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:08,437 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:08,437 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,437 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:08,437 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:08,437 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-10-27 06:06:08,437 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:08,438 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:08,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,533 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:08,533 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,537 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:08,537 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:08,557 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:08,557 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,561 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:08,561 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:08,581 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:08,581 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,586 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:08,586 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,612 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:08,612 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:08,735 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:08,736 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:08,736 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:08,736 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:08,737 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:08,737 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:08,737 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:08,737 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:08,737 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:08,737 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-10-27 06:06:08,737 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:08,737 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:08,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:08,790 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:08,790 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:08,791 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 [2018-10-27 06:06:08,791 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,792 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,792 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,792 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,793 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:08,793 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:08,801 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,802 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 [2018-10-27 06:06:08,802 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,802 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,802 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,803 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,807 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:08,807 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:08,809 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:08,810 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 [2018-10-27 06:06:08,810 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:08,810 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:08,810 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:08,811 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:08,811 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:08,811 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:08,816 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:08,820 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:08,823 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:08,824 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:08,824 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:08,824 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:08,824 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:08,824 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:08,825 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:08,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:08,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:08,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:08,953 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 [2018-10-27 06:06:08,953 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 130 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-10-27 06:06:08,993 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 130 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 190 states and 257 transitions. Complement of second has 7 states. [2018-10-27 06:06:08,995 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 [2018-10-27 06:06:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2018-10-27 06:06:08,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:06:08,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:08,996 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:09,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:09,023 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:09,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:09,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:09,040 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:09,041 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 130 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-10-27 06:06:09,201 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 130 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 200 states and 268 transitions. Complement of second has 9 states. [2018-10-27 06:06:09,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:09,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2018-10-27 06:06:09,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:06:09,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:09,202 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:09,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:09,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:09,238 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:09,252 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:09,253 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 130 transitions. cyclomatic complexity: 48 Second operand 4 states. [2018-10-27 06:06:09,273 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 130 transitions. cyclomatic complexity: 48. Second operand 4 states. Result 231 states and 321 transitions. Complement of second has 9 states. [2018-10-27 06:06:09,274 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 [2018-10-27 06:06:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2018-10-27 06:06:09,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:06:09,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:09,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 20 letters. Loop has 5 letters. [2018-10-27 06:06:09,276 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:09,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2018-10-27 06:06:09,276 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:09,276 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 231 states and 321 transitions. [2018-10-27 06:06:09,278 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2018-10-27 06:06:09,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 231 states to 150 states and 205 transitions. [2018-10-27 06:06:09,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-10-27 06:06:09,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2018-10-27 06:06:09,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 205 transitions. [2018-10-27 06:06:09,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:09,284 INFO L705 BuchiCegarLoop]: Abstraction has 150 states and 205 transitions. [2018-10-27 06:06:09,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 205 transitions. [2018-10-27 06:06:09,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 93. [2018-10-27 06:06:09,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-10-27 06:06:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 128 transitions. [2018-10-27 06:06:09,291 INFO L728 BuchiCegarLoop]: Abstraction has 93 states and 128 transitions. [2018-10-27 06:06:09,291 INFO L608 BuchiCegarLoop]: Abstraction has 93 states and 128 transitions. [2018-10-27 06:06:09,291 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-10-27 06:06:09,291 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 128 transitions. [2018-10-27 06:06:09,292 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 31 [2018-10-27 06:06:09,292 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:09,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:09,293 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:09,293 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:09,293 INFO L793 eck$LassoCheckResult]: Stem: 1775#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1768#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 1769#L25-2 assume true; 1812#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1789#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 1776#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 1766#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1767#L25-2 assume true; 1814#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1805#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 1770#L26 [2018-10-27 06:06:09,293 INFO L795 eck$LassoCheckResult]: Loop: 1770#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 1771#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 1824#L25-2 assume true; 1818#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1815#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 1804#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 1808#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 1807#L25-2 assume true; 1806#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 1803#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 1770#L26 [2018-10-27 06:06:09,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash -770011880, now seen corresponding path program 2 times [2018-10-27 06:06:09,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:09,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:09,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,294 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:09,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1803485608, now seen corresponding path program 1 times [2018-10-27 06:06:09,302 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:09,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:09,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:09,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1696291503, now seen corresponding path program 1 times [2018-10-27 06:06:09,312 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:09,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:09,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:09,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,464 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2018-10-27 06:06:09,498 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:09,498 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:09,498 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:09,498 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:09,498 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:09,498 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,498 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:09,498 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:09,498 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-10-27 06:06:09,498 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:09,498 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:09,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,558 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:09,559 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,562 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,563 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,565 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,565 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,582 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,582 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,598 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,598 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,601 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,601 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,619 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:09,619 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,622 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:09,622 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 33 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 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:09,646 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:09,765 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:09,766 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:09,766 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:09,766 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:09,766 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:09,767 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:09,767 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:09,767 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:09,767 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:09,767 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-10-27 06:06:09,767 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:09,767 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:09,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:09,833 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:09,833 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:09,834 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 [2018-10-27 06:06:09,834 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,834 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:09,834 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,835 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:09,835 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,835 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:09,835 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:09,836 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:09,836 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 [2018-10-27 06:06:09,836 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,836 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,837 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:09,837 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,837 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:09,837 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:09,839 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:09,840 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 [2018-10-27 06:06:09,840 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,840 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,840 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:09,840 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,841 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:09,841 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:09,842 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:09,843 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 [2018-10-27 06:06:09,843 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:09,843 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:09,843 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:09,843 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:09,843 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:09,844 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:09,844 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:09,847 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:09,850 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:09,850 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:09,850 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:09,850 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:09,850 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:09,851 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:09,851 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:09,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:09,880 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:09,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:09,909 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-10-27 06:06:09,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 128 transitions. cyclomatic complexity: 44 Second operand 5 states. [2018-10-27 06:06:09,963 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 128 transitions. cyclomatic complexity: 44. Second operand 5 states. Result 262 states and 370 transitions. Complement of second has 12 states. [2018-10-27 06:06:09,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:09,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:06:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2018-10-27 06:06:09,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 10 letters. Loop has 10 letters. [2018-10-27 06:06:09,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:09,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 20 letters. Loop has 10 letters. [2018-10-27 06:06:09,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:09,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 10 letters. Loop has 20 letters. [2018-10-27 06:06:09,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:09,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 262 states and 370 transitions. [2018-10-27 06:06:09,968 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 37 [2018-10-27 06:06:09,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 262 states to 250 states and 357 transitions. [2018-10-27 06:06:09,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2018-10-27 06:06:09,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 47 [2018-10-27 06:06:09,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 250 states and 357 transitions. [2018-10-27 06:06:09,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:09,971 INFO L705 BuchiCegarLoop]: Abstraction has 250 states and 357 transitions. [2018-10-27 06:06:09,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states and 357 transitions. [2018-10-27 06:06:09,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 207. [2018-10-27 06:06:09,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-10-27 06:06:09,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 299 transitions. [2018-10-27 06:06:09,979 INFO L728 BuchiCegarLoop]: Abstraction has 207 states and 299 transitions. [2018-10-27 06:06:09,979 INFO L608 BuchiCegarLoop]: Abstraction has 207 states and 299 transitions. [2018-10-27 06:06:09,979 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-10-27 06:06:09,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 207 states and 299 transitions. [2018-10-27 06:06:09,981 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 33 [2018-10-27 06:06:09,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:09,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:09,981 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:09,981 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:09,982 INFO L793 eck$LassoCheckResult]: Stem: 2227#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 2220#L25-2 assume true; 2296#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 2295#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 2294#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 2293#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 2291#L25-2 assume true; 2289#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 2256#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 2258#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 2222#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 2278#L25-2 assume true; 2276#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 2272#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 2266#L33 [2018-10-27 06:06:09,982 INFO L795 eck$LassoCheckResult]: Loop: 2266#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 2263#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 2262#L25-2 assume true; 2261#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 2259#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 2221#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 2222#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 2278#L25-2 assume true; 2276#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 2272#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 2266#L33 [2018-10-27 06:06:09,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,982 INFO L82 PathProgramCache]: Analyzing trace with hash 863084854, now seen corresponding path program 4 times [2018-10-27 06:06:09,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:09,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:09,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:09,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,989 INFO L82 PathProgramCache]: Analyzing trace with hash 976369992, now seen corresponding path program 1 times [2018-10-27 06:06:09,989 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:09,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:09,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,989 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:09,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:09,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:09,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1009228861, now seen corresponding path program 5 times [2018-10-27 06:06:09,994 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:09,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:09,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:09,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,056 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:10,056 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:10,056 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:10,056 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:10,056 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:10,057 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,057 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:10,057 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:10,057 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-10-27 06:06:10,057 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:10,057 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:10,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,115 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:10,115 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,118 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,118 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:10,135 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:10,135 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,138 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,138 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:10,141 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:10,141 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,158 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,158 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:10,175 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:10,175 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,178 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:10,179 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,198 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:10,198 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:10,308 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:10,309 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:10,309 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:10,309 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:10,309 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:10,309 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:10,309 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:10,309 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:10,309 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:10,310 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-10-27 06:06:10,310 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:10,310 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:10,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:10,597 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:10,597 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:10,598 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 [2018-10-27 06:06:10,598 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:10,598 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:10,598 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:10,598 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:10,599 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:10,599 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:10,601 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:10,601 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 [2018-10-27 06:06:10,601 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:10,601 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:10,601 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:10,602 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-10-27 06:06:10,602 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:10,602 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-10-27 06:06:10,602 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:10,603 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:10,603 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 [2018-10-27 06:06:10,603 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:10,603 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:10,615 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:10,615 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:10,616 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:10,616 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:10,616 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:10,618 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:10,625 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:10,625 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:10,625 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:10,626 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:10,626 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:10,626 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:10,626 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:10,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:10,708 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:10,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:10,774 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-10-27 06:06:10,774 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 207 states and 299 transitions. cyclomatic complexity: 110 Second operand 5 states. [2018-10-27 06:06:10,841 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 207 states and 299 transitions. cyclomatic complexity: 110. Second operand 5 states. Result 572 states and 834 transitions. Complement of second has 12 states. [2018-10-27 06:06:10,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:10,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:06:10,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 35 transitions. [2018-10-27 06:06:10,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 15 letters. Loop has 10 letters. [2018-10-27 06:06:10,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:10,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 25 letters. Loop has 10 letters. [2018-10-27 06:06:10,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:10,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 35 transitions. Stem has 15 letters. Loop has 20 letters. [2018-10-27 06:06:10,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:10,845 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 572 states and 834 transitions. [2018-10-27 06:06:10,851 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2018-10-27 06:06:10,853 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 572 states to 451 states and 639 transitions. [2018-10-27 06:06:10,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2018-10-27 06:06:10,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 70 [2018-10-27 06:06:10,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 451 states and 639 transitions. [2018-10-27 06:06:10,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:10,854 INFO L705 BuchiCegarLoop]: Abstraction has 451 states and 639 transitions. [2018-10-27 06:06:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states and 639 transitions. [2018-10-27 06:06:10,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 373. [2018-10-27 06:06:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 373 states. [2018-10-27 06:06:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 553 transitions. [2018-10-27 06:06:10,872 INFO L728 BuchiCegarLoop]: Abstraction has 373 states and 553 transitions. [2018-10-27 06:06:10,872 INFO L608 BuchiCegarLoop]: Abstraction has 373 states and 553 transitions. [2018-10-27 06:06:10,872 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-10-27 06:06:10,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 373 states and 553 transitions. [2018-10-27 06:06:10,874 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-10-27 06:06:10,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:10,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:10,875 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:10,878 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:10,878 INFO L793 eck$LassoCheckResult]: Stem: 3115#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3105#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3106#L25-2 assume true; 3240#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3294#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 3362#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3376#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3375#L25-2 assume true; 3374#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3372#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 3370#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 3175#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 3173#L25-2 assume true; 3171#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3165#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 3116#L33 assume !(main_~x~0 < main_~y~0);main_~x~0 := main_~y~0 - 1; 3107#L33-2 [2018-10-27 06:06:10,878 INFO L795 eck$LassoCheckResult]: Loop: 3107#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 3108#L25-2 assume true; 3119#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 3122#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 3431#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 3107#L33-2 [2018-10-27 06:06:10,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:10,879 INFO L82 PathProgramCache]: Analyzing trace with hash 985826727, now seen corresponding path program 6 times [2018-10-27 06:06:10,879 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:10,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:10,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:10,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:10,891 INFO L82 PathProgramCache]: Analyzing trace with hash 57449351, now seen corresponding path program 2 times [2018-10-27 06:06:10,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:10,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:10,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,894 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:10,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1102687649, now seen corresponding path program 2 times [2018-10-27 06:06:10,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:10,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:10,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:10,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:11,224 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 14 [2018-10-27 06:06:11,388 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 06:06:11,397 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:11,397 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:11,398 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:11,398 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:11,398 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:11,398 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,398 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:11,398 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:11,398 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-10-27 06:06:11,398 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:11,398 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:11,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,624 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 06:06:11,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,667 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:11,667 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,671 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:11,671 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:11,690 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:11,690 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,694 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:11,695 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:11,698 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:11,698 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,715 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:11,715 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,734 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:11,735 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:11,787 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:11,789 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:11,789 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:11,789 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:11,789 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:11,789 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:11,789 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:11,789 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:11,789 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:11,789 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration9_Loop [2018-10-27 06:06:11,789 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:11,789 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:11,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:11,964 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:11,964 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:11,964 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 [2018-10-27 06:06:11,967 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:11,967 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:11,967 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:11,968 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:11,968 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:11,968 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:11,970 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:11,971 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 [2018-10-27 06:06:11,971 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:11,971 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:11,971 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:11,971 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:11,972 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:11,972 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:11,972 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:11,972 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:11,973 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 [2018-10-27 06:06:11,973 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:11,973 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:11,973 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:11,973 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:11,973 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:11,973 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:11,974 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:11,975 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:11,976 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:11,977 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:11,977 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:11,977 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:11,977 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:11,977 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:11,977 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:11,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:12,013 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 [2018-10-27 06:06:12,013 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 373 states and 553 transitions. cyclomatic complexity: 211 Second operand 4 states. [2018-10-27 06:06:12,061 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 373 states and 553 transitions. cyclomatic complexity: 211. Second operand 4 states. Result 801 states and 1166 transitions. Complement of second has 7 states. [2018-10-27 06:06:12,063 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 [2018-10-27 06:06:12,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:12,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2018-10-27 06:06:12,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 16 letters. Loop has 5 letters. [2018-10-27 06:06:12,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:12,065 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:12,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,082 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:12,141 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 [2018-10-27 06:06:12,141 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 373 states and 553 transitions. cyclomatic complexity: 211 Second operand 4 states. [2018-10-27 06:06:12,159 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 373 states and 553 transitions. cyclomatic complexity: 211. Second operand 4 states. Result 822 states and 1197 transitions. Complement of second has 7 states. [2018-10-27 06:06:12,160 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 [2018-10-27 06:06:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:12,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2018-10-27 06:06:12,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 5 letters. [2018-10-27 06:06:12,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:12,161 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:12,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,219 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,226 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:12,241 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 [2018-10-27 06:06:12,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 373 states and 553 transitions. cyclomatic complexity: 211 Second operand 4 states. [2018-10-27 06:06:12,251 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 373 states and 553 transitions. cyclomatic complexity: 211. Second operand 4 states. Result 524 states and 754 transitions. Complement of second has 6 states. [2018-10-27 06:06:12,252 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 [2018-10-27 06:06:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:12,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2018-10-27 06:06:12,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 5 letters. [2018-10-27 06:06:12,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:12,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 21 letters. Loop has 5 letters. [2018-10-27 06:06:12,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:12,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 10 letters. [2018-10-27 06:06:12,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:12,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 524 states and 754 transitions. [2018-10-27 06:06:12,256 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-10-27 06:06:12,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 524 states to 461 states and 667 transitions. [2018-10-27 06:06:12,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-10-27 06:06:12,258 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2018-10-27 06:06:12,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 461 states and 667 transitions. [2018-10-27 06:06:12,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:12,259 INFO L705 BuchiCegarLoop]: Abstraction has 461 states and 667 transitions. [2018-10-27 06:06:12,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states and 667 transitions. [2018-10-27 06:06:12,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 418. [2018-10-27 06:06:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2018-10-27 06:06:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 598 transitions. [2018-10-27 06:06:12,270 INFO L728 BuchiCegarLoop]: Abstraction has 418 states and 598 transitions. [2018-10-27 06:06:12,270 INFO L608 BuchiCegarLoop]: Abstraction has 418 states and 598 transitions. [2018-10-27 06:06:12,270 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-10-27 06:06:12,270 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 418 states and 598 transitions. [2018-10-27 06:06:12,272 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-10-27 06:06:12,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:12,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:12,272 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:12,272 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:12,273 INFO L793 eck$LassoCheckResult]: Stem: 5864#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 5855#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5856#L25-2 assume true; 5953#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 5954#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 6131#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 6234#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 6235#L25-2 assume true; 6228#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 6229#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 6221#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 6015#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 6013#L25-2 assume true; 6012#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 5916#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 5884#L33 [2018-10-27 06:06:12,273 INFO L795 eck$LassoCheckResult]: Loop: 5884#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 5857#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 5858#L25-2 assume true; 5907#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 5904#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 5884#L33 [2018-10-27 06:06:12,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:12,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1256111864, now seen corresponding path program 1 times [2018-10-27 06:06:12,273 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:12,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:12,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:12,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:12,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:12,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:12,284 INFO L82 PathProgramCache]: Analyzing trace with hash 54493901, now seen corresponding path program 3 times [2018-10-27 06:06:12,284 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:12,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:12,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:12,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:12,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:12,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:12,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1318812106, now seen corresponding path program 2 times [2018-10-27 06:06:12,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:12,292 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:12,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:12,293 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:12,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:12,359 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:12,359 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:12,359 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:12,359 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:12,360 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:12,360 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:12,360 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:12,360 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:12,360 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-10-27 06:06:12,360 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:12,360 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:12,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,427 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:12,427 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:12,431 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:12,431 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 44 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 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:12,451 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:12,452 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:12,540 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:12,541 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:12,541 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:12,541 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:12,541 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:12,541 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:12,541 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:12,541 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:12,541 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:12,541 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-10-27 06:06:12,541 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:12,541 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:12,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:12,599 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:12,599 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:12,600 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 [2018-10-27 06:06:12,600 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:12,600 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:12,600 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:12,600 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:12,600 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:12,601 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:12,601 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:12,603 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:12,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:12,604 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:12,604 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:12,605 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:12,605 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:12,605 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:12,605 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:12,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:12,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:12,685 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 [2018-10-27 06:06:12,685 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 418 states and 598 transitions. cyclomatic complexity: 215 Second operand 4 states. [2018-10-27 06:06:12,705 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 418 states and 598 transitions. cyclomatic complexity: 215. Second operand 4 states. Result 577 states and 826 transitions. Complement of second has 7 states. [2018-10-27 06:06:12,707 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 [2018-10-27 06:06:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-10-27 06:06:12,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:06:12,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:12,708 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:13,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,069 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:13,222 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:13,222 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 418 states and 598 transitions. cyclomatic complexity: 215 Second operand 4 states. [2018-10-27 06:06:13,249 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 418 states and 598 transitions. cyclomatic complexity: 215. Second operand 4 states. Result 580 states and 819 transitions. Complement of second has 7 states. [2018-10-27 06:06:13,251 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 [2018-10-27 06:06:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-10-27 06:06:13,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:06:13,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:13,252 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:13,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,318 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:13,338 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:13,338 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 418 states and 598 transitions. cyclomatic complexity: 215 Second operand 4 states. [2018-10-27 06:06:13,364 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 418 states and 598 transitions. cyclomatic complexity: 215. Second operand 4 states. Result 641 states and 931 transitions. Complement of second has 8 states. [2018-10-27 06:06:13,367 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 [2018-10-27 06:06:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:13,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2018-10-27 06:06:13,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:06:13,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:13,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 20 letters. Loop has 5 letters. [2018-10-27 06:06:13,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:13,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 15 letters. Loop has 10 letters. [2018-10-27 06:06:13,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:13,369 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 641 states and 931 transitions. [2018-10-27 06:06:13,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:06:13,380 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 641 states to 451 states and 629 transitions. [2018-10-27 06:06:13,380 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-10-27 06:06:13,380 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-10-27 06:06:13,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 451 states and 629 transitions. [2018-10-27 06:06:13,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:13,381 INFO L705 BuchiCegarLoop]: Abstraction has 451 states and 629 transitions. [2018-10-27 06:06:13,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states and 629 transitions. [2018-10-27 06:06:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 377. [2018-10-27 06:06:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-10-27 06:06:13,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 533 transitions. [2018-10-27 06:06:13,391 INFO L728 BuchiCegarLoop]: Abstraction has 377 states and 533 transitions. [2018-10-27 06:06:13,391 INFO L608 BuchiCegarLoop]: Abstraction has 377 states and 533 transitions. [2018-10-27 06:06:13,391 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-10-27 06:06:13,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 377 states and 533 transitions. [2018-10-27 06:06:13,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:06:13,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:13,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:13,398 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:06:13,398 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:13,398 INFO L793 eck$LassoCheckResult]: Stem: 8306#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 8299#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8300#L25-2 assume true; 8341#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8351#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 8352#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 8407#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8405#L25-2 assume true; 8404#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8362#L25 assume !(main_#t~nondet2 != 0);havoc main_#t~nondet2; 8363#L33 assume main_~x~0 < main_~y~0;main_~x~0 := main_~x~0 - 1; 8349#L33-2 main_~y~0 := main_#t~nondet4;havoc main_#t~nondet4; 8350#L25-2 assume true; 8339#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8340#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 8326#L26 assume main_~x~0 < main_~y~0;main_~y~0 := main_~x~0 - 1; 8327#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8381#L25-2 assume true; 8380#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8376#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 8324#L26 [2018-10-27 06:06:13,398 INFO L795 eck$LassoCheckResult]: Loop: 8324#L26 assume !(main_~x~0 < main_~y~0);main_~y~0 := main_~y~0 - 1; 8325#L26-2 main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3; 8338#L25-2 assume true; 8337#L24-1 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8332#L25 assume main_#t~nondet2 != 0;havoc main_#t~nondet2; 8324#L26 [2018-10-27 06:06:13,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:13,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1453349994, now seen corresponding path program 1 times [2018-10-27 06:06:13,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:13,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:13,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:13,399 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:13,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:13,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:13,414 INFO L82 PathProgramCache]: Analyzing trace with hash 47761126, now seen corresponding path program 3 times [2018-10-27 06:06:13,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:13,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:13,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:13,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:13,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:13,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash -2126592995, now seen corresponding path program 2 times [2018-10-27 06:06:13,422 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:13,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:13,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:13,422 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:13,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:13,458 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:13,458 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:13,458 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:13,458 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:13,458 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:13,458 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:13,459 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:13,459 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:13,459 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration11_Loop [2018-10-27 06:06:13,459 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:13,459 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:13,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,525 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:13,525 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 45 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 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:13,528 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:13,528 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:13,545 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:13,545 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_21=0} Honda state: {v_rep~unnamed0~0~false_21=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:13,550 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:13,550 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2488e00e-ecf5-4b1f-b72f-0089f7116398/bin-2019/uautomizer/z3 Starting monitored process 47 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 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:13,568 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:13,569 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:13,655 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:13,656 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:13,656 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:13,656 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:13,656 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:13,656 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:13,656 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:13,656 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:13,656 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:13,656 INFO L131 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration11_Loop [2018-10-27 06:06:13,657 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:13,657 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:13,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:13,727 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:13,728 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:13,728 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 [2018-10-27 06:06:13,729 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:13,729 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:13,729 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:13,729 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:13,729 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:13,729 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:13,730 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:13,731 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 [2018-10-27 06:06:13,731 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:13,731 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:13,731 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:13,731 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:13,732 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:13,732 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:13,733 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:13,733 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 [2018-10-27 06:06:13,734 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:13,734 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:13,734 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:13,734 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:13,734 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:13,734 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:13,735 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:13,743 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:13,745 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:13,745 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:13,745 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:13,745 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:13,745 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:13,745 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-10-27 06:06:13,746 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:13,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,805 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:13,902 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 [2018-10-27 06:06:13,902 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 377 states and 533 transitions. cyclomatic complexity: 188 Second operand 4 states. [2018-10-27 06:06:13,921 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 377 states and 533 transitions. cyclomatic complexity: 188. Second operand 4 states. Result 542 states and 756 transitions. Complement of second has 7 states. [2018-10-27 06:06:13,921 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 [2018-10-27 06:06:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:13,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2018-10-27 06:06:13,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 20 letters. Loop has 5 letters. [2018-10-27 06:06:13,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:13,922 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:13,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:13,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:13,953 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:13,954 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 377 states and 533 transitions. cyclomatic complexity: 188 Second operand 4 states. [2018-10-27 06:06:13,969 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 377 states and 533 transitions. cyclomatic complexity: 188. Second operand 4 states. Result 551 states and 760 transitions. Complement of second has 7 states. [2018-10-27 06:06:13,971 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 [2018-10-27 06:06:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:13,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-10-27 06:06:13,971 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 20 letters. Loop has 5 letters. [2018-10-27 06:06:13,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:13,971 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:14,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:14,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:14,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:14,027 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-10-27 06:06:14,027 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 377 states and 533 transitions. cyclomatic complexity: 188 Second operand 4 states. [2018-10-27 06:06:14,057 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 377 states and 533 transitions. cyclomatic complexity: 188. Second operand 4 states. Result 641 states and 935 transitions. Complement of second has 8 states. [2018-10-27 06:06:14,059 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 [2018-10-27 06:06:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2018-10-27 06:06:14,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 20 letters. Loop has 5 letters. [2018-10-27 06:06:14,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:14,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 25 letters. Loop has 5 letters. [2018-10-27 06:06:14,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:14,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 20 letters. Loop has 10 letters. [2018-10-27 06:06:14,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:14,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 641 states and 935 transitions. [2018-10-27 06:06:14,064 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:14,064 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 641 states to 0 states and 0 transitions. [2018-10-27 06:06:14,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:06:14,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:06:14,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:06:14,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:14,065 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:14,065 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:14,065 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:14,065 INFO L442 BuchiCegarLoop]: ======== Iteration 12============ [2018-10-27 06:06:14,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:06:14,065 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:14,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:06:14,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:06:14 BoogieIcfgContainer [2018-10-27 06:06:14,079 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:06:14,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:06:14,081 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:06:14,081 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:06:14,082 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:04" (3/4) ... [2018-10-27 06:06:14,087 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:06:14,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:06:14,089 INFO L168 Benchmark]: Toolchain (without parser) took 10646.34 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 318.8 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -118.3 MB). Peak memory consumption was 200.5 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:14,089 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:14,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.44 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:14,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.90 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:14,094 INFO L168 Benchmark]: Boogie Preprocessor took 21.55 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:14,094 INFO L168 Benchmark]: RCFGBuilder took 447.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -215.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:14,094 INFO L168 Benchmark]: BuchiAutomizer took 9932.95 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.7 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 83.7 MB). Peak memory consumption was 228.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:14,095 INFO L168 Benchmark]: Witness Printer took 8.83 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:14,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.44 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.90 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.55 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 447.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 941.0 MB in the beginning and 1.2 GB in the end (delta: -215.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 9932.95 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 144.7 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 83.7 MB). Peak memory consumption was 228.4 MB. Max. memory is 11.5 GB. * Witness Printer took 8.83 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 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 11 terminating modules (0 trivial, 7 deterministic, 4 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 7 locations. One deterministic module has affine ranking function y and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.8s and 12 iterations. TraceHistogramMax:4. Analysis of lassos took 7.0s. Construction of modules took 0.3s. Büchi inclusion checks took 2.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 344 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 418 states and ocurred in iteration 9. Nontrivial modules had stage [7, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 284 SDtfs, 364 SDslu, 137 SDs, 0 SdLazy, 279 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT11 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax153 hnf98 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf92 smp100 dnf100 smp100 tf107 neg100 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 24 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...