./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.08_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.08_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 06:11:28,418 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:11:28,420 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:11:28,430 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:11:28,431 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:11:28,432 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:11:28,432 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:11:28,434 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:11:28,435 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:11:28,438 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:11:28,439 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:11:28,439 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:11:28,439 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:11:28,440 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:11:28,441 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:11:28,441 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:11:28,442 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:11:28,450 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:11:28,453 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:11:28,456 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:11:28,458 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:11:28,461 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:11:28,463 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:11:28,465 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:11:28,465 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:11:28,466 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:11:28,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:11:28,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:11:28,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:11:28,468 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:11:28,468 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:11:28,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:11:28,469 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:11:28,469 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:11:28,469 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:11:28,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:11:28,470 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:11:28,482 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:11:28,482 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:11:28,483 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:11:28,483 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:11:28,483 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:11:28,484 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:11:28,484 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:11:28,484 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:11:28,484 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:11:28,484 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:11:28,484 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:11:28,484 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:11:28,485 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:11:28,485 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:11:28,485 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:11:28,485 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:11:28,485 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:11:28,485 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:11:28,485 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:11:28,486 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:11:28,486 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:11:28,486 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:11:28,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:11:28,486 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:11:28,486 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:11:28,486 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:11:28,487 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:11:28,489 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:11:28,490 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_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 -> 8d821d1d8ee2aa872e0bf75fb913cf046d5ff3f8 [2018-10-27 06:11:28,518 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:11:28,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:11:28,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:11:28,538 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:11:28,538 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:11:28,538 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/c.08_true-termination_true-no-overflow.c [2018-10-27 06:11:28,577 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/data/73dd9b952/8b32dde319c54fa38d0b1f29e241541e/FLAGf61713e4f [2018-10-27 06:11:28,946 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:11:28,947 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/sv-benchmarks/c/termination-restricted-15/c.08_true-termination_true-no-overflow.c [2018-10-27 06:11:28,952 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/data/73dd9b952/8b32dde319c54fa38d0b1f29e241541e/FLAGf61713e4f [2018-10-27 06:11:28,962 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/bin-2019/uautomizer/data/73dd9b952/8b32dde319c54fa38d0b1f29e241541e [2018-10-27 06:11:28,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:11:28,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:11:28,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:28,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:11:28,970 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:11:28,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:28" (1/1) ... [2018-10-27 06:11:28,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336b396f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:28, skipping insertion in model container [2018-10-27 06:11:28,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:28" (1/1) ... [2018-10-27 06:11:28,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:11:28,990 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:11:29,101 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:29,104 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:11:29,113 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:29,122 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:11:29,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29 WrapperNode [2018-10-27 06:11:29,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:29,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:29,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:11:29,123 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:11:29,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:29,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:11:29,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:11:29,150 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:11:29,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... [2018-10-27 06:11:29,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:11:29,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:11:29,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:11:29,165 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:11:29,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:29,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:11:29,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:11:29,473 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:11:29,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:29 BoogieIcfgContainer [2018-10-27 06:11:29,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:11:29,475 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:11:29,475 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:11:29,479 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:11:29,480 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:29,480 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:11:28" (1/3) ... [2018-10-27 06:11:29,481 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d4c7aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:29, skipping insertion in model container [2018-10-27 06:11:29,481 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:29,481 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:29" (2/3) ... [2018-10-27 06:11:29,482 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d4c7aa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:29, skipping insertion in model container [2018-10-27 06:11:29,482 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:29,482 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:29" (3/3) ... [2018-10-27 06:11:29,485 INFO L375 chiAutomizerObserver]: Analyzing ICFG c.08_true-termination_true-no-overflow.c [2018-10-27 06:11:29,536 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:11:29,536 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:11:29,536 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:11:29,537 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:11:29,537 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:11:29,537 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:11:29,537 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:11:29,537 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:11:29,537 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:11:29,550 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:11:29,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:29,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:29,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:29,576 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:11:29,576 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:11:29,576 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:11:29,577 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2018-10-27 06:11:29,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:29,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:29,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:29,578 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:11:29,578 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:11:29,586 INFO L793 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 8#L10-3true [2018-10-27 06:11:29,587 INFO L795 eck$LassoCheckResult]: Loop: 8#L10-3true assume true; 12#L10-1true assume !!(main_~i~0 >= 0);main_~j~0 := 0; 13#L12-3true assume !true; 10#L12-4true main_~i~0 := main_~i~0 - 1; 8#L10-3true [2018-10-27 06:11:29,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:29,592 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:11:29,594 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:29,595 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:29,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:29,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:29,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1114569, now seen corresponding path program 1 times [2018-10-27 06:11:29,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:29,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:29,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:29,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:29,720 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 06:11:29,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:11:29,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:11:29,727 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:11:29,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 06:11:29,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 06:11:29,745 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2018-10-27 06:11:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:29,754 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-27 06:11:29,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:11:29,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-10-27 06:11:29,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:29,761 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-10-27 06:11:29,763 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:11:29,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-10-27 06:11:29,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-10-27 06:11:29,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:29,766 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:11:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-10-27 06:11:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-10-27 06:11:29,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-10-27 06:11:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-10-27 06:11:29,790 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:11:29,790 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-10-27 06:11:29,790 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:11:29,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-10-27 06:11:29,792 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:29,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:29,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:29,792 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:11:29,792 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:29,793 INFO L793 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 30#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 31#L10-3 [2018-10-27 06:11:29,793 INFO L795 eck$LassoCheckResult]: Loop: 31#L10-3 assume true; 36#L10-1 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 35#L12-3 assume true; 33#L12-1 assume !(main_~j~0 <= main_~i~0 - 1); 34#L12-4 main_~i~0 := main_~i~0 - 1; 31#L10-3 [2018-10-27 06:11:29,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:29,793 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2018-10-27 06:11:29,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:29,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:29,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:29,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:29,800 INFO L82 PathProgramCache]: Analyzing trace with hash 34543791, now seen corresponding path program 1 times [2018-10-27 06:11:29,800 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:29,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:29,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,802 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:11:29,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1805983277, now seen corresponding path program 1 times [2018-10-27 06:11:29,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:29,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:29,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:29,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:29,987 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:29,988 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:29,988 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:29,988 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:29,989 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:29,989 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:29,989 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:29,989 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:29,989 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:11:29,989 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:29,989 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:30,012 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 06:11:30,031 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 06:11:30,047 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 06:11:30,249 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:30,250 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:30,254 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:30,254 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:30,285 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:30,285 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_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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) [2018-10-27 06:11:30,296 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:30,296 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:30,324 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:30,324 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_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:30,327 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:30,328 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:30,352 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:30,352 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:30,377 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:30,378 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:30,378 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:30,378 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:30,378 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:30,378 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:30,378 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:30,379 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:30,379 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:30,379 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:11:30,379 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:30,379 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:30,380 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 06:11:30,395 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 06:11:30,415 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 06:11:30,632 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-27 06:11:30,708 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:30,711 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:30,712 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 06:11:30,713 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:30,714 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:30,714 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:30,714 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:30,717 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:11:30,717 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:11:30,724 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:30,725 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 06:11:30,725 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:30,726 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:30,726 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:30,726 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:30,729 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:11:30,729 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:11:30,737 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:30,738 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 06:11:30,739 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:30,739 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:30,739 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:30,739 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:30,740 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:30,740 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:30,741 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:30,749 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:30,753 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:11:30,753 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-10-27 06:11:30,755 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:30,756 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:30,756 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:30,756 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2018-10-27 06:11:30,757 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:30,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:30,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:30,841 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:30,902 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 06:11:30,904 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 06:11:30,905 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 4 states. [2018-10-27 06:11:30,973 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2018-10-27 06:11:30,973 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 06:11:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:30,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-10-27 06:11:30,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 5 letters. [2018-10-27 06:11:30,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:30,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 5 letters. [2018-10-27 06:11:30,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:30,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 10 letters. [2018-10-27 06:11:30,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:30,978 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 15 transitions. [2018-10-27 06:11:30,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:11:30,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 11 states and 14 transitions. [2018-10-27 06:11:30,980 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-10-27 06:11:30,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-10-27 06:11:30,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-10-27 06:11:30,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:30,980 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:11:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-10-27 06:11:30,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-27 06:11:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-27 06:11:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-10-27 06:11:30,982 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:11:30,982 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:11:30,982 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:11:30,982 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-10-27 06:11:30,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:11:30,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:30,983 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:30,983 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-10-27 06:11:30,983 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:11:30,983 INFO L793 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 93#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 94#L10-3 assume true; 101#L10-1 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 97#L12-3 [2018-10-27 06:11:30,983 INFO L795 eck$LassoCheckResult]: Loop: 97#L12-3 assume true; 96#L12-1 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := main_~j~0 + 1; 97#L12-3 [2018-10-27 06:11:30,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:30,984 INFO L82 PathProgramCache]: Analyzing trace with hash 925641, now seen corresponding path program 1 times [2018-10-27 06:11:30,984 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:30,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:30,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:30,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:30,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:30,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:30,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 1 times [2018-10-27 06:11:30,994 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:30,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:30,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:30,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:30,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:31,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:31,001 INFO L82 PathProgramCache]: Analyzing trace with hash 889541519, now seen corresponding path program 1 times [2018-10-27 06:11:31,001 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:31,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:31,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:31,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:31,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:31,045 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:31,045 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:31,045 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:31,045 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:31,046 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:31,046 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:31,046 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:31,046 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:31,046 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:11:31,046 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:31,046 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:31,047 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 06:11:31,058 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 06:11:31,060 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 06:11:31,103 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:31,103 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:31,106 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:31,106 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:31,122 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:31,122 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_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:31,125 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:31,126 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:31,142 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:31,142 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_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:31,147 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:31,147 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:31,166 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:31,166 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:31,352 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:31,353 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:31,353 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:31,354 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:31,354 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:31,354 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:31,354 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:31,354 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:31,354 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:31,354 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:11:31,354 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:31,354 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:31,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:31,363 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 06:11:31,365 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 06:11:31,655 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-27 06:11:31,656 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:31,656 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:31,656 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 06:11:31,657 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:31,657 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:31,658 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:31,658 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:31,659 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:11:31,659 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:11:31,666 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:31,667 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 06:11:31,668 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:31,668 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:31,668 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:31,668 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:31,670 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:11:31,670 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:11:31,678 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:31,678 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 06:11:31,683 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:31,683 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:31,683 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:31,684 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:31,684 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:31,684 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:31,684 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:31,693 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:31,699 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:11:31,703 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:31,703 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:31,703 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:31,703 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:31,704 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-10-27 06:11:31,704 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:31,804 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:31,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:31,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:31,823 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:31,824 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 06:11:31,824 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:11:31,824 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-10-27 06:11:31,898 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 28 states and 34 transitions. Complement of second has 5 states. [2018-10-27 06:11:31,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:11:31,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-10-27 06:11:31,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2018-10-27 06:11:31,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:31,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-10-27 06:11:31,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:31,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 4 letters. [2018-10-27 06:11:31,901 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:31,901 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 34 transitions. [2018-10-27 06:11:31,902 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:11:31,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 19 states and 23 transitions. [2018-10-27 06:11:31,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:11:31,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-10-27 06:11:31,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 23 transitions. [2018-10-27 06:11:31,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:31,903 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 23 transitions. [2018-10-27 06:11:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 23 transitions. [2018-10-27 06:11:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-10-27 06:11:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-27 06:11:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2018-10-27 06:11:31,906 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:11:31,906 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2018-10-27 06:11:31,906 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:11:31,906 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2018-10-27 06:11:31,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:11:31,907 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:31,907 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:31,907 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2018-10-27 06:11:31,908 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:11:31,908 INFO L793 eck$LassoCheckResult]: Stem: 172#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 170#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~i~0, main_~j~0;havoc main_~c~0;havoc main_~i~0;havoc main_~j~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~j~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 171#L10-3 assume true; 177#L10-1 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 176#L12-3 assume true; 184#L12-1 assume !(main_~j~0 <= main_~i~0 - 1); 181#L12-4 main_~i~0 := main_~i~0 - 1; 178#L10-3 assume true; 179#L10-1 assume !!(main_~i~0 >= 0);main_~j~0 := 0; 174#L12-3 [2018-10-27 06:11:31,908 INFO L795 eck$LassoCheckResult]: Loop: 174#L12-3 assume true; 173#L12-1 assume !!(main_~j~0 <= main_~i~0 - 1);main_~j~0 := main_~j~0 + 1; 174#L12-3 [2018-10-27 06:11:31,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:31,908 INFO L82 PathProgramCache]: Analyzing trace with hash 383141811, now seen corresponding path program 2 times [2018-10-27 06:11:31,908 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:31,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:31,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:31,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:31,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:31,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:11:31,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 06:11:31,948 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:11:31,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:31,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1479, now seen corresponding path program 2 times [2018-10-27 06:11:31,949 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:31,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:31,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:31,950 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:11:31,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:31,980 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:31,980 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:31,980 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:31,981 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:31,981 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:31,981 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:31,981 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:31,981 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:31,981 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:11:31,981 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:31,981 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:31,982 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 06:11:31,990 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 06:11:31,993 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 06:11:32,049 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:32,049 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:32,052 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:32,052 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_82c1f64d-bfad-4e5b-8e12-fc5a4df08105/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 06:11:32,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:32,077 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:32,283 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:32,285 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:32,285 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:32,285 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:32,285 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:32,285 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:32,285 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:32,285 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:32,285 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:32,285 INFO L131 ssoRankerPreferences]: Filename of dumped script: c.08_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:11:32,286 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:32,286 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:32,287 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 06:11:32,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:32,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:32,375 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:32,375 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:32,375 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 06:11:32,376 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:32,376 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:32,376 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:32,376 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:32,376 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:32,377 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:32,377 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:32,383 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:32,388 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:11:32,390 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:32,390 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:32,391 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:32,391 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:32,391 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-10-27 06:11:32,392 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:32,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:32,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:32,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:32,437 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 06:11:32,437 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:11:32,438 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-10-27 06:11:32,461 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-10-27 06:11:32,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:11:32,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-10-27 06:11:32,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-10-27 06:11:32,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:32,463 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:11:32,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:32,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:32,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:32,485 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 06:11:32,485 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:11:32,485 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-10-27 06:11:32,508 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 25 states and 29 transitions. Complement of second has 5 states. [2018-10-27 06:11:32,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:11:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-10-27 06:11:32,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2018-10-27 06:11:32,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:32,510 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:11:32,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:32,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:32,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:32,567 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 06:11:32,567 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 1 loop predicates [2018-10-27 06:11:32,568 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-10-27 06:11:32,579 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 24 states and 29 transitions. Complement of second has 4 states. [2018-10-27 06:11:32,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:11:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2018-10-27 06:11:32,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 2 letters. [2018-10-27 06:11:32,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:32,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 11 letters. Loop has 2 letters. [2018-10-27 06:11:32,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:32,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 9 letters. Loop has 4 letters. [2018-10-27 06:11:32,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:32,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 29 transitions. [2018-10-27 06:11:32,584 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:32,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2018-10-27 06:11:32,584 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:11:32,584 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:11:32,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:11:32,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:32,584 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:32,584 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:32,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 06:11:32,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 06:11:32,589 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-10-27 06:11:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:32,589 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-10-27 06:11:32,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:11:32,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-10-27 06:11:32,589 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:32,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 06:11:32,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:11:32,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:11:32,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:11:32,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:32,590 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:32,590 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:32,590 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:32,590 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:11:32,590 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:11:32,591 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:32,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:11:32,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:11:32 BoogieIcfgContainer [2018-10-27 06:11:32,600 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:11:32,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:11:32,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:11:32,601 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:11:32,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:29" (3/4) ... [2018-10-27 06:11:32,610 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:11:32,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:11:32,611 INFO L168 Benchmark]: Toolchain (without parser) took 3645.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 955.8 MB in the beginning and 928.3 MB in the end (delta: 27.5 MB). Peak memory consumption was 165.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:32,613 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 06:11:32,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.55 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 944.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:32,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.27 ms. Allocated memory is still 1.0 GB. Free memory is still 944.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:32,616 INFO L168 Benchmark]: Boogie Preprocessor took 14.89 ms. Allocated memory is still 1.0 GB. Free memory was 944.9 MB in the beginning and 942.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:32,617 INFO L168 Benchmark]: RCFGBuilder took 309.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 942.2 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:32,617 INFO L168 Benchmark]: BuchiAutomizer took 3125.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.3 MB in the end (delta: 198.6 MB). Peak memory consumption was 198.6 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:32,618 INFO L168 Benchmark]: Witness Printer took 9.69 ms. Allocated memory is still 1.2 GB. Free memory is still 928.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:32,621 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 155.55 ms. Allocated memory is still 1.0 GB. Free memory was 955.8 MB in the beginning and 944.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.27 ms. Allocated memory is still 1.0 GB. Free memory is still 944.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.89 ms. Allocated memory is still 1.0 GB. Free memory was 944.9 MB in the beginning and 942.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 309.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 942.2 MB in the beginning and 1.1 GB in the end (delta: -184.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3125.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.3 MB in the end (delta: 198.6 MB). Peak memory consumption was 198.6 MB. Max. memory is 11.5 GB. * Witness Printer took 9.69 ms. Allocated memory is still 1.2 GB. Free memory is still 928.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One nondeterministic module has affine ranking function -1 * j + i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 2.3s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 44 SDtfs, 34 SDslu, 9 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax187 hnf98 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp96 dnf100 smp100 tf110 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...