./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_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_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/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 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 02:39:19,642 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 02:39:19,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 02:39:19,652 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 02:39:19,652 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 02:39:19,653 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 02:39:19,654 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 02:39:19,655 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 02:39:19,656 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 02:39:19,657 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 02:39:19,657 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 02:39:19,658 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 02:39:19,659 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 02:39:19,659 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 02:39:19,660 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 02:39:19,661 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 02:39:19,661 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 02:39:19,663 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 02:39:19,664 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 02:39:19,665 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 02:39:19,666 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 02:39:19,667 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 02:39:19,669 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 02:39:19,669 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 02:39:19,669 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 02:39:19,670 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 02:39:19,671 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 02:39:19,671 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 02:39:19,672 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 02:39:19,673 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 02:39:19,673 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 02:39:19,674 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 02:39:19,674 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 02:39:19,674 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 02:39:19,675 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 02:39:19,675 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 02:39:19,676 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 02:39:19,687 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 02:39:19,687 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 02:39:19,688 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 02:39:19,688 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 02:39:19,688 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 02:39:19,688 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 02:39:19,689 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 02:39:19,689 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 02:39:19,689 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 02:39:19,689 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 02:39:19,689 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 02:39:19,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 02:39:19,690 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 02:39:19,690 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 02:39:19,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 02:39:19,690 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 02:39:19,690 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 02:39:19,690 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 02:39:19,690 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 02:39:19,691 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 02:39:19,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 02:39:19,691 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 02:39:19,691 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 02:39:19,691 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 02:39:19,691 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 02:39:19,692 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 02:39:19,692 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 02:39:19,692 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 02:39:19,693 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_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/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 -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2018-11-10 02:39:19,716 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 02:39:19,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 02:39:19,726 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 02:39:19,727 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 02:39:19,727 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 02:39:19,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-11-10 02:39:19,763 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/data/7932e199c/f301738e11dd45cf8d15cab0b4a06ca7/FLAG021de692a [2018-11-10 02:39:20,157 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 02:39:20,157 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-11-10 02:39:20,161 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/data/7932e199c/f301738e11dd45cf8d15cab0b4a06ca7/FLAG021de692a [2018-11-10 02:39:20,171 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/data/7932e199c/f301738e11dd45cf8d15cab0b4a06ca7 [2018-11-10 02:39:20,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 02:39:20,175 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 02:39:20,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 02:39:20,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 02:39:20,177 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 02:39:20,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc2202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20, skipping insertion in model container [2018-11-10 02:39:20,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 02:39:20,194 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 02:39:20,280 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:39:20,283 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 02:39:20,291 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 02:39:20,300 INFO L193 MainTranslator]: Completed translation [2018-11-10 02:39:20,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20 WrapperNode [2018-11-10 02:39:20,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 02:39:20,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 02:39:20,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 02:39:20,301 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 02:39:20,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 02:39:20,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 02:39:20,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 02:39:20,327 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 02:39:20,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... [2018-11-10 02:39:20,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 02:39:20,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 02:39:20,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 02:39:20,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 02:39:20,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:20,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 02:39:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 02:39:20,516 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 02:39:20,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:39:20 BoogieIcfgContainer [2018-11-10 02:39:20,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 02:39:20,517 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 02:39:20,517 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 02:39:20,520 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 02:39:20,521 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 02:39:20,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 02:39:20" (1/3) ... [2018-11-10 02:39:20,522 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4877abff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 02:39:20, skipping insertion in model container [2018-11-10 02:39:20,522 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 02:39:20,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:39:20" (2/3) ... [2018-11-10 02:39:20,522 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4877abff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 02:39:20, skipping insertion in model container [2018-11-10 02:39:20,522 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 02:39:20,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:39:20" (3/3) ... [2018-11-10 02:39:20,523 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-11-10 02:39:20,572 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 02:39:20,573 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 02:39:20,573 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 02:39:20,573 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 02:39:20,573 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 02:39:20,573 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 02:39:20,574 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 02:39:20,574 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 02:39:20,574 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 02:39:20,586 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-10 02:39:20,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:20,604 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 02:39:20,605 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 02:39:20,610 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 02:39:20,610 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 02:39:20,611 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 02:39:20,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-10 02:39:20,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:20,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 02:39:20,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 02:39:20,612 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 02:39:20,612 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 02:39:20,617 INFO L793 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-11-10 02:39:20,617 INFO L795 eck$LassoCheckResult]: Loop: 5#L18-2true assume true; 6#L17-1true assume !!(main_~x~0 != main_~K~0); 8#L18true assume !(main_~x~0 > main_~K~0);main_~x~0 := main_~x~0 + 1; 5#L18-2true [2018-11-10 02:39:20,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:20,621 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 02:39:20,622 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:20,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:20,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:20,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:20,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:20,681 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-11-10 02:39:20,682 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:20,682 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:20,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:20,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:20,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:20,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:20,694 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-10 02:39:20,694 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:20,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:20,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:20,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:20,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:20,753 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:20,754 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:20,754 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:20,754 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:20,754 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 02:39:20,754 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:20,754 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:20,754 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:20,754 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 02:39:20,755 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:20,755 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:20,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:20,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:20,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:20,879 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:20,879 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:20,885 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:20,885 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:20,906 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:20,906 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_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:20,909 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:20,909 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:20,926 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:20,926 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_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:20,929 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:20,929 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:20,947 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 02:39:20,947 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:21,114 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 02:39:21,115 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:21,115 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:21,116 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:21,116 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:21,116 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 02:39:21,116 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,116 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:21,116 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:21,116 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 02:39:21,116 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:21,116 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:21,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,205 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:21,209 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 02:39:21,211 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:21,212 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:21,212 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:21,212 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:21,212 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:21,215 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 02:39:21,215 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 02:39:21,223 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 02:39:21,223 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:21,224 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:21,224 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:21,224 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:21,224 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:21,227 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 02:39:21,227 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 02:39:21,234 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 02:39:21,235 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:21,235 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:21,235 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 02:39:21,236 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:21,236 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:21,236 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:21,237 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 02:39:21,237 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 02:39:21,243 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 02:39:21,248 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 02:39:21,248 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 02:39:21,250 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 02:39:21,250 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 02:39:21,250 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 02:39:21,251 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~K~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 02:39:21,252 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 02:39:21,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:21,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:21,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:21,314 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 [2018-11-10 02:39:21,315 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2018-11-10 02:39:21,341 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 6 states. [2018-11-10 02:39:21,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 02:39:21,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 02:39:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-11-10 02:39:21,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-10 02:39:21,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:21,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-10 02:39:21,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:21,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-10 02:39:21,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:21,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-11-10 02:39:21,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:21,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 11 states and 14 transitions. [2018-11-10 02:39:21,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-10 02:39:21,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-10 02:39:21,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-11-10 02:39:21,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 02:39:21,352 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-10 02:39:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-11-10 02:39:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-10 02:39:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-10 02:39:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-11-10 02:39:21,368 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-10 02:39:21,368 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-11-10 02:39:21,368 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 02:39:21,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-11-10 02:39:21,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:21,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 02:39:21,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 02:39:21,369 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 02:39:21,369 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 02:39:21,369 INFO L793 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 75#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 76#L18-2 assume true; 84#L17-1 assume !!(main_~x~0 != main_~K~0); 85#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 82#L18-2 [2018-11-10 02:39:21,369 INFO L795 eck$LassoCheckResult]: Loop: 82#L18-2 assume true; 77#L17-1 assume !!(main_~x~0 != main_~K~0); 78#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := main_~x~0 + 1; 82#L18-2 [2018-11-10 02:39:21,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,369 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-11-10 02:39:21,369 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:21,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:21,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:21,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,375 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 2 times [2018-11-10 02:39:21,375 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:21,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:21,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:21,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-11-10 02:39:21,379 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:21,379 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:21,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,379 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 02:39:21,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:21,420 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 02:39:21,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 02:39:21,438 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:21,438 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:21,438 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:21,438 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:21,438 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 02:39:21,439 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,439 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:21,439 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:21,439 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 02:39:21,439 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:21,439 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:21,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,492 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:21,493 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,495 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:21,495 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:21,513 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:21,513 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_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,515 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:21,515 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:21,532 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:21,532 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_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,534 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:21,534 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,553 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 02:39:21,553 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:21,716 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 02:39:21,717 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:21,717 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:21,717 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:21,717 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:21,718 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 02:39:21,718 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,718 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:21,718 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:21,718 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 02:39:21,718 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:21,718 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:21,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,774 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:21,774 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 02:39:21,775 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:21,776 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:21,776 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:21,776 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:21,776 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:21,777 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 02:39:21,778 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 02:39:21,783 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 02:39:21,783 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:21,784 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:21,784 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:21,784 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:21,784 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:21,787 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 02:39:21,788 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 02:39:21,795 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 02:39:21,796 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:21,797 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:21,797 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 02:39:21,797 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:21,798 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:21,798 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:21,798 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 02:39:21,798 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 02:39:21,802 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 02:39:21,805 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 02:39:21,806 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 02:39:21,806 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 02:39:21,806 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 02:39:21,806 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 02:39:21,806 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~K~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 02:39:21,807 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 02:39:21,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:21,828 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:21,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:21,833 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 [2018-11-10 02:39:21,833 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-10 02:39:21,841 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 17 states and 22 transitions. Complement of second has 5 states. [2018-11-10 02:39:21,842 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 [2018-11-10 02:39:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 02:39:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-10 02:39:21,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-10 02:39:21,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:21,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-10 02:39:21,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:21,843 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-10 02:39:21,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:21,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-11-10 02:39:21,844 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:21,845 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2018-11-10 02:39:21,845 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-10 02:39:21,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-10 02:39:21,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-11-10 02:39:21,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 02:39:21,845 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-10 02:39:21,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-11-10 02:39:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-10 02:39:21,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-10 02:39:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-11-10 02:39:21,847 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-11-10 02:39:21,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 02:39:21,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 02:39:21,850 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand 4 states. [2018-11-10 02:39:21,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:39:21,870 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2018-11-10 02:39:21,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 02:39:21,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2018-11-10 02:39:21,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:21,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 16 transitions. [2018-11-10 02:39:21,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 02:39:21,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-10 02:39:21,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2018-11-10 02:39:21,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 02:39:21,873 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-11-10 02:39:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2018-11-10 02:39:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 9. [2018-11-10 02:39:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-10 02:39:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-11-10 02:39:21,875 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-10 02:39:21,875 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-11-10 02:39:21,875 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 02:39:21,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2018-11-10 02:39:21,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:21,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 02:39:21,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 02:39:21,877 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 02:39:21,877 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 02:39:21,877 INFO L793 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 182#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 183#L18-2 assume true; 186#L17-1 [2018-11-10 02:39:21,877 INFO L795 eck$LassoCheckResult]: Loop: 186#L17-1 assume !!(main_~x~0 != main_~K~0); 189#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 185#L18-2 assume true; 186#L17-1 [2018-11-10 02:39:21,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,878 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-10 02:39:21,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:21,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:21,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:21,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 1 times [2018-11-10 02:39:21,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:21,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:21,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:21,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:21,889 INFO L82 PathProgramCache]: Analyzing trace with hash 889541472, now seen corresponding path program 2 times [2018-11-10 02:39:21,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:21,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:21,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 02:39:21,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:21,904 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:21,904 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:21,904 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:21,905 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:21,905 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 02:39:21,905 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,905 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:21,905 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:21,905 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 02:39:21,905 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:21,905 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:21,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:21,946 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:21,946 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,949 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:21,949 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:21,966 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:21,966 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,970 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:21,970 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:21,987 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:21,987 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:21,994 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:21,995 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,013 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 02:39:22,013 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:22,219 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 02:39:22,220 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:22,220 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:22,220 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:22,220 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:22,220 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 02:39:22,221 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,221 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:22,221 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:22,221 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 02:39:22,221 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:22,221 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:22,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,248 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:22,248 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 02:39:22,248 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:22,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:22,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:22,249 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:22,249 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:22,250 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 02:39:22,251 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 02:39:22,255 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 02:39:22,255 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:22,256 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:22,256 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 02:39:22,256 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:22,256 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:22,256 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:22,257 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 02:39:22,257 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 02:39:22,261 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 02:39:22,264 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 02:39:22,265 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 02:39:22,265 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 02:39:22,265 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 02:39:22,266 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 02:39:22,266 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [2018-11-10 02:39:22,267 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 02:39:22,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:22,315 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 02:39:22,315 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-11-10 02:39:22,323 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 19 states and 21 transitions. Complement of second has 5 states. [2018-11-10 02:39:22,323 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 [2018-11-10 02:39:22,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 02:39:22,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-10 02:39:22,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-10 02:39:22,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 02:39:22,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-10 02:39:22,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2018-11-10 02:39:22,325 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:22,326 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 12 transitions. [2018-11-10 02:39:22,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-10 02:39:22,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-10 02:39:22,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2018-11-10 02:39:22,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 02:39:22,326 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-11-10 02:39:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2018-11-10 02:39:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-11-10 02:39:22,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-10 02:39:22,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-11-10 02:39:22,327 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-10 02:39:22,327 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-11-10 02:39:22,328 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 02:39:22,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-11-10 02:39:22,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 02:39:22,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 02:39:22,328 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 02:39:22,328 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-10 02:39:22,329 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 02:39:22,329 INFO L793 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 249#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 250#L18-2 assume true; 251#L17-1 assume !!(main_~x~0 != main_~K~0); 255#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := main_~x~0 + 1; 252#L18-2 assume true; 253#L17-1 [2018-11-10 02:39:22,329 INFO L795 eck$LassoCheckResult]: Loop: 253#L17-1 assume !!(main_~x~0 != main_~K~0); 254#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 257#L18-2 assume true; 253#L17-1 [2018-11-10 02:39:22,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:22,329 INFO L82 PathProgramCache]: Analyzing trace with hash 889541534, now seen corresponding path program 2 times [2018-11-10 02:39:22,329 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:22,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:22,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:22,330 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 02:39:22,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:22,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:22,334 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 2 times [2018-11-10 02:39:22,334 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:22,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:22,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:22,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 02:39:22,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 02:39:22,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:22,338 INFO L82 PathProgramCache]: Analyzing trace with hash 383635077, now seen corresponding path program 2 times [2018-11-10 02:39:22,338 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 02:39:22,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 02:39:22,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:22,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 02:39:22,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 02:39:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:22,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 02:39:22,356 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 02:39:22,362 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-10 02:39:22,366 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 02:39:22,367 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 02:39:22,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:22,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 02:39:22,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-10 02:39:22,402 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:22,402 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:22,402 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:22,402 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:22,402 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 02:39:22,402 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,402 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:22,402 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:22,402 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 02:39:22,402 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:22,402 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:22,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,450 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:22,450 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,453 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:22,453 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:22,470 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:22,470 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,473 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:22,473 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:22,489 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 02:39:22,489 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,492 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 02:39:22,493 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dc7d828f-0cf4-4af6-955a-1c7f151b4c14/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,510 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 02:39:22,510 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 02:39:22,729 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 02:39:22,730 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 02:39:22,731 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 02:39:22,731 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 02:39:22,731 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 02:39:22,731 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 02:39:22,731 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 02:39:22,731 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 02:39:22,731 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 02:39:22,731 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-10 02:39:22,731 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 02:39:22,731 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 02:39:22,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 02:39:22,766 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 02:39:22,766 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 02:39:22,767 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:22,767 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:22,767 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:22,767 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:22,767 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:22,768 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 02:39:22,769 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 02:39:22,772 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 02:39:22,772 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:22,772 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:22,772 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:22,772 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:22,772 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:22,773 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-10 02:39:22,773 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-10 02:39:22,775 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 02:39:22,775 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 02:39:22,775 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 02:39:22,775 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 02:39:22,775 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 02:39:22,775 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 02:39:22,776 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 02:39:22,776 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 02:39:22,776 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 02:39:22,778 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 02:39:22,781 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-10 02:39:22,781 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 02:39:22,782 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 02:39:22,782 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 02:39:22,782 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 02:39:22,783 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~K~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-10 02:39:22,783 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 02:39:22,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:22,827 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 02:39:22,828 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-10 02:39:22,832 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-11-10 02:39:22,832 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 [2018-11-10 02:39:22,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 02:39:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-10 02:39:22,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 02:39:22,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,833 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 02:39:22,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:22,853 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 02:39:22,853 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-10 02:39:22,857 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-11-10 02:39:22,858 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 [2018-11-10 02:39:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 02:39:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-10 02:39:22,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 02:39:22,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,858 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 02:39:22,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 02:39:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,867 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 02:39:22,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 02:39:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 02:39:22,876 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 02:39:22,876 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-10 02:39:22,882 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2018-11-10 02:39:22,882 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 [2018-11-10 02:39:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 02:39:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-11-10 02:39:22,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 02:39:22,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 02:39:22,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-10 02:39:22,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 02:39:22,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2018-11-10 02:39:22,884 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 02:39:22,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2018-11-10 02:39:22,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 02:39:22,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 02:39:22,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 02:39:22,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 02:39:22,885 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 02:39:22,885 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 02:39:22,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 02:39:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 02:39:22,885 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-11-10 02:39:22,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 02:39:22,886 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-10 02:39:22,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 02:39:22,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-10 02:39:22,886 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 02:39:22,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 02:39:22,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 02:39:22,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 02:39:22,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 02:39:22,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 02:39:22,886 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 02:39:22,887 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 02:39:22,887 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 02:39:22,887 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 02:39:22,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 02:39:22,887 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 02:39:22,887 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 02:39:22,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 02:39:22 BoogieIcfgContainer [2018-11-10 02:39:22,892 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 02:39:22,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 02:39:22,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 02:39:22,893 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 02:39:22,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 02:39:20" (3/4) ... [2018-11-10 02:39:22,895 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 02:39:22,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 02:39:22,896 INFO L168 Benchmark]: Toolchain (without parser) took 2721.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 959.1 MB in the beginning and 857.4 MB in the end (delta: 101.7 MB). Peak memory consumption was 230.7 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:22,897 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:39:22,897 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.86 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:22,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.02 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:39:22,898 INFO L168 Benchmark]: Boogie Preprocessor took 13.91 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 940.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:22,898 INFO L168 Benchmark]: RCFGBuilder took 176.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:22,899 INFO L168 Benchmark]: BuchiAutomizer took 2374.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 857.4 MB in the end (delta: 260.3 MB). Peak memory consumption was 260.3 MB. Max. memory is 11.5 GB. [2018-11-10 02:39:22,899 INFO L168 Benchmark]: Witness Printer took 3.18 ms. Allocated memory is still 1.2 GB. Free memory is still 857.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 02:39:22,901 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.86 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.02 ms. Allocated memory is still 1.0 GB. Free memory is still 948.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.91 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 940.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 176.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2374.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 857.4 MB in the end (delta: 260.3 MB). Peak memory consumption was 260.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.18 ms. Allocated memory is still 1.2 GB. Free memory is still 857.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function K + -1 * x and consists of 4 locations. One deterministic module has affine ranking function K + -1 * x and consists of 3 locations. One deterministic module has affine ranking function x + -1 * K and consists of 3 locations. One nondeterministic module has affine ranking function -1 * K + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 37 SDtfs, 33 SDslu, 10 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax199 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...