./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/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 f9de9875f09e594325a645528f016ce12ac5c646 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 19:02:22,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 19:02:22,359 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 19:02:22,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 19:02:22,365 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 19:02:22,365 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 19:02:22,366 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 19:02:22,367 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 19:02:22,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 19:02:22,368 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 19:02:22,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 19:02:22,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 19:02:22,369 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 19:02:22,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 19:02:22,370 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 19:02:22,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 19:02:22,371 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 19:02:22,372 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 19:02:22,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 19:02:22,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 19:02:22,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 19:02:22,375 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 19:02:22,376 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 19:02:22,376 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 19:02:22,376 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 19:02:22,377 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 19:02:22,377 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 19:02:22,378 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 19:02:22,378 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 19:02:22,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 19:02:22,379 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 19:02:22,379 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 19:02:22,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 19:02:22,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 19:02:22,380 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 19:02:22,380 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 19:02:22,381 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 19:02:22,388 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 19:02:22,388 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 19:02:22,389 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 19:02:22,389 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 19:02:22,390 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 19:02:22,390 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 19:02:22,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 19:02:22,391 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 19:02:22,391 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 19:02:22,392 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 19:02:22,392 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 19:02:22,392 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 19:02:22,392 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 19:02:22,392 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_b78c9306-a393-413d-899b-661ac5e2f012/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 -> f9de9875f09e594325a645528f016ce12ac5c646 [2018-12-08 19:02:22,409 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 19:02:22,415 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 19:02:22,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 19:02:22,418 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 19:02:22,418 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 19:02:22,419 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c [2018-12-08 19:02:22,455 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/data/697e50258/6207b2746fb74bcb86f3c399f799fd75/FLAG5d045fb84 [2018-12-08 19:02:22,847 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 19:02:22,847 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c [2018-12-08 19:02:22,851 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/data/697e50258/6207b2746fb74bcb86f3c399f799fd75/FLAG5d045fb84 [2018-12-08 19:02:22,860 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/data/697e50258/6207b2746fb74bcb86f3c399f799fd75 [2018-12-08 19:02:22,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 19:02:22,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 19:02:22,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 19:02:22,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 19:02:22,865 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 19:02:22,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:22,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd2551a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22, skipping insertion in model container [2018-12-08 19:02:22,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:22,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 19:02:22,881 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 19:02:22,964 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:02:22,967 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 19:02:22,975 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:02:22,983 INFO L195 MainTranslator]: Completed translation [2018-12-08 19:02:22,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22 WrapperNode [2018-12-08 19:02:22,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 19:02:22,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 19:02:22,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 19:02:22,984 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 19:02:22,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:22,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 19:02:23,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 19:02:23,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 19:02:23,002 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 19:02:23,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... [2018-12-08 19:02:23,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 19:02:23,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 19:02:23,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 19:02:23,013 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 19:02:23,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 19:02:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 19:02:23,152 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 19:02:23,152 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-08 19:02:23,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:02:23 BoogieIcfgContainer [2018-12-08 19:02:23,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 19:02:23,153 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 19:02:23,153 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 19:02:23,155 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 19:02:23,156 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 19:02:23,156 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 07:02:22" (1/3) ... [2018-12-08 19:02:23,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12c53b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 07:02:23, skipping insertion in model container [2018-12-08 19:02:23,156 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 19:02:23,157 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:02:22" (2/3) ... [2018-12-08 19:02:23,157 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@12c53b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 07:02:23, skipping insertion in model container [2018-12-08 19:02:23,157 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 19:02:23,157 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:02:23" (3/3) ... [2018-12-08 19:02:23,158 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c [2018-12-08 19:02:23,191 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 19:02:23,192 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 19:02:23,192 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 19:02:23,192 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 19:02:23,192 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 19:02:23,192 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 19:02:23,192 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 19:02:23,192 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 19:02:23,192 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 19:02:23,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-08 19:02:23,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 19:02:23,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 19:02:23,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 19:02:23,218 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 19:02:23,218 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 19:02:23,218 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 19:02:23,218 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-08 19:02:23,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 19:02:23,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 19:02:23,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 19:02:23,219 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 19:02:23,219 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 19:02:23,224 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~d~0;havoc main_~x~0;havoc main_~y~0;havoc main_~d~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~d~0 := main_#t~nondet2;havoc main_#t~nondet2; 7#L21-2true [2018-12-08 19:02:23,224 INFO L796 eck$LassoCheckResult]: Loop: 7#L21-2true assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 3#L21true assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1;main_~d~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L21-2true [2018-12-08 19:02:23,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,228 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-08 19:02:23,229 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:23,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:23,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,262 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:23,262 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-08 19:02:23,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:23,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:23,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:23,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,298 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-08 19:02:23,298 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:23,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:23,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:23,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,342 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:23,343 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:23,343 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:23,343 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:23,343 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 19:02:23,343 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,343 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:23,343 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:23,343 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 19:02:23,343 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:23,343 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:23,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,430 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:23,430 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,433 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:23,433 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:23,461 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:23,461 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,464 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:23,464 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:23,481 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:23,482 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,484 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:23,485 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,501 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 19:02:23,502 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:23,518 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 19:02:23,519 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:23,519 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:23,519 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:23,519 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:23,519 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 19:02:23,519 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,519 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:23,519 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:23,519 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 19:02:23,519 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:23,519 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:23,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,575 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:23,578 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 19:02:23,579 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:23,580 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:23,580 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:23,580 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:23,580 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:23,582 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 19:02:23,583 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 19:02:23,587 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:23,587 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:23,588 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:23,588 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:23,588 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:23,588 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:23,589 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 19:02:23,589 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 19:02:23,593 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:23,594 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:23,594 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:23,594 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:23,595 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:23,595 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:23,595 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:23,595 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:23,595 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:23,598 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 19:02:23,600 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 19:02:23,600 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 19:02:23,601 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 19:02:23,602 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 19:02:23,602 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 19:02:23,602 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-08 19:02:23,603 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 19:02:23,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:23,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:23,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:23,648 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:23,649 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-12-08 19:02:23,675 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 8 states. [2018-12-08 19:02:23,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:23,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:23,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-12-08 19:02:23,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-08 19:02:23,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:23,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 19:02:23,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:23,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-08 19:02:23,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:23,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-12-08 19:02:23,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 19:02:23,682 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-12-08 19:02:23,683 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-08 19:02:23,683 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-08 19:02:23,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-12-08 19:02:23,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 19:02:23,684 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 19:02:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-12-08 19:02:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-08 19:02:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 19:02:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-08 19:02:23,699 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 19:02:23,699 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 19:02:23,699 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 19:02:23,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-08 19:02:23,699 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 19:02:23,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 19:02:23,700 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 19:02:23,700 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 19:02:23,700 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 19:02:23,700 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~d~0;havoc main_~x~0;havoc main_~y~0;havoc main_~d~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~d~0 := main_#t~nondet2;havoc main_#t~nondet2; 72#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 67#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~y~0 := main_~y~0 - 1;main_~d~0 := main_~d~0 - 1; 68#L21-2 [2018-12-08 19:02:23,700 INFO L796 eck$LassoCheckResult]: Loop: 68#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 73#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1;main_~d~0 := main_#t~nondet4;havoc main_#t~nondet4; 68#L21-2 [2018-12-08 19:02:23,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,700 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-12-08 19:02:23,700 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:23,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:23,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:23,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-12-08 19:02:23,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:23,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:23,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:23,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,712 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-12-08 19:02:23,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:23,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:23,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:23,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:23,741 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:23,742 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:23,742 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:23,742 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:23,742 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 19:02:23,742 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,742 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:23,742 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:23,742 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 19:02:23,742 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:23,742 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:23,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,800 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:23,800 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,802 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:23,802 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:23,817 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:23,817 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,820 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:23,820 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:23,823 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:23,823 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=4, ULTIMATE.start_main_~d~0=4} Honda state: {ULTIMATE.start_main_#t~nondet4=4, ULTIMATE.start_main_~d~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,838 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:23,838 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:23,840 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:23,840 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=7} Honda state: {ULTIMATE.start_main_#t~nondet3=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,855 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:23,855 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,879 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 19:02:23,879 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:23,895 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 19:02:23,896 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:23,896 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:23,896 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:23,896 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:23,896 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 19:02:23,896 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:23,896 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:23,896 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:23,896 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 19:02:23,896 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:23,896 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:23,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:23,950 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:23,950 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 19:02:23,951 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:23,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:23,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:23,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:23,952 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:23,953 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 19:02:23,953 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 19:02:23,956 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:23,957 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:23,957 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:23,957 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:23,958 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:23,958 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:23,958 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:23,958 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:23,958 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:23,961 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:23,962 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:23,962 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:23,963 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:23,963 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:23,963 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 19:02:23,963 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:23,963 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 19:02:23,963 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:23,966 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:23,967 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:23,967 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:23,967 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:23,968 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:23,968 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:23,968 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:23,968 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:23,968 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:23,971 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 19:02:23,974 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 19:02:23,974 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 19:02:23,974 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 19:02:23,974 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 19:02:23,975 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 19:02:23,975 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-08 19:02:23,975 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 19:02:23,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:23,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:23,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,005 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,005 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 19:02:24,016 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2018-12-08 19:02:24,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 19:02:24,017 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 19:02:24,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 19:02:24,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-12-08 19:02:24,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-12-08 19:02:24,019 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 19:02:24,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-12-08 19:02:24,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-08 19:02:24,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 19:02:24,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-12-08 19:02:24,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 19:02:24,020 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 19:02:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-12-08 19:02:24,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-08 19:02:24,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-08 19:02:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-12-08 19:02:24,022 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 19:02:24,022 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 19:02:24,022 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 19:02:24,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2018-12-08 19:02:24,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 19:02:24,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 19:02:24,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 19:02:24,023 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-12-08 19:02:24,023 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 19:02:24,023 INFO L794 eck$LassoCheckResult]: Stem: 125#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~d~0;havoc main_~x~0;havoc main_~y~0;havoc main_~d~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~d~0 := main_#t~nondet2;havoc main_#t~nondet2; 126#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 121#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~y~0 := main_~y~0 - 1;main_~d~0 := main_~d~0 - 1; 122#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 129#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~y~0 := main_~y~0 - 1;main_~d~0 := main_~d~0 - 1; 127#L21-2 [2018-12-08 19:02:24,023 INFO L796 eck$LassoCheckResult]: Loop: 127#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 128#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1;main_~d~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L21-2 [2018-12-08 19:02:24,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,023 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2018-12-08 19:02:24,023 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:24,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-12-08 19:02:24,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2018-12-08 19:02:24,039 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,040 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,070 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:24,070 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:24,070 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:24,070 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:24,071 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 19:02:24,071 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,071 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:24,071 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:24,071 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 19:02:24,071 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:24,071 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:24,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,080 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,124 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:24,124 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,127 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,127 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,130 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:24,130 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=7} Honda state: {ULTIMATE.start_main_#t~nondet3=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,145 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,145 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,159 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:24,159 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,162 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,162 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,165 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:24,165 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=4, ULTIMATE.start_main_~d~0=4} Honda state: {ULTIMATE.start_main_#t~nondet4=4, ULTIMATE.start_main_~d~0=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,180 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,180 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,194 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:24,194 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,197 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,197 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,212 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 19:02:24,212 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,215 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,215 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,231 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 19:02:24,231 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,247 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 19:02:24,247 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:24,248 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:24,248 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:24,248 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:24,248 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 19:02:24,248 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,248 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:24,248 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:24,248 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 19:02:24,248 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:24,248 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:24,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,294 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:24,294 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 19:02:24,295 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,295 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,295 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:24,295 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,295 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 19:02:24,295 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,295 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 19:02:24,296 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:24,297 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:24,297 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,298 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,298 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,298 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,298 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,299 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 19:02:24,299 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 19:02:24,302 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:24,302 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,302 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,303 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:24,303 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,303 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,303 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,303 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:24,303 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:24,306 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:24,306 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,306 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,306 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:24,307 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,307 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,307 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,307 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:24,307 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:24,308 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:24,308 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,308 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,308 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,308 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,308 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,309 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 19:02:24,309 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 19:02:24,310 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:24,310 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,310 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,310 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:24,311 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,311 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,311 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,311 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:24,311 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:24,313 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 19:02:24,314 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 19:02:24,314 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 19:02:24,314 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 19:02:24,314 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 19:02:24,314 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 19:02:24,314 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-08 19:02:24,314 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 19:02:24,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,337 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,337 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 19:02:24,342 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-12-08 19:02:24,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 19:02:24,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 19:02:24,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,343 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 19:02:24,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,362 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,362 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 19:02:24,367 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-12-08 19:02:24,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 19:02:24,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 19:02:24,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,368 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 19:02:24,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,387 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,387 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 19:02:24,393 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2018-12-08 19:02:24,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-08 19:02:24,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 19:02:24,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-08 19:02:24,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,394 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-08 19:02:24,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2018-12-08 19:02:24,395 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 19:02:24,395 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2018-12-08 19:02:24,395 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-08 19:02:24,395 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 19:02:24,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-12-08 19:02:24,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 19:02:24,395 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-12-08 19:02:24,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-12-08 19:02:24,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2018-12-08 19:02:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 19:02:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2018-12-08 19:02:24,396 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-12-08 19:02:24,396 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-12-08 19:02:24,396 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 19:02:24,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2018-12-08 19:02:24,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 19:02:24,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 19:02:24,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 19:02:24,397 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 19:02:24,397 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 19:02:24,397 INFO L794 eck$LassoCheckResult]: Stem: 272#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~d~0;havoc main_~x~0;havoc main_~y~0;havoc main_~d~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~d~0 := main_#t~nondet2;havoc main_#t~nondet2; 269#L21-2 [2018-12-08 19:02:24,397 INFO L796 eck$LassoCheckResult]: Loop: 269#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 268#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~y~0 := main_~y~0 - 1;main_~d~0 := main_~d~0 - 1; 269#L21-2 [2018-12-08 19:02:24,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,397 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-12-08 19:02:24,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2018-12-08 19:02:24,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,404 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2018-12-08 19:02:24,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:24,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,427 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:24,428 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:24,428 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:24,428 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:24,428 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 19:02:24,428 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,428 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:24,428 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:24,428 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 19:02:24,428 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:24,428 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:24,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,482 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:24,482 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,483 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,484 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,499 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 19:02:24,499 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,515 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 19:02:24,516 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:24,516 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:24,516 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:24,516 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:24,516 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 19:02:24,516 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,516 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:24,516 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:24,516 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 19:02:24,516 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:24,517 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:24,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,589 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:24,589 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 19:02:24,590 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,590 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,590 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:24,590 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,591 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,591 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,591 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:24,591 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:24,593 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 19:02:24,594 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 19:02:24,594 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 19:02:24,594 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 19:02:24,594 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 19:02:24,594 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 19:02:24,594 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~d~0) = 1*ULTIMATE.start_main_~d~0 Supporting invariants [] [2018-12-08 19:02:24,595 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 19:02:24,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,603 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,611 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,611 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-08 19:02:24,616 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 5 states. [2018-12-08 19:02:24,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2018-12-08 19:02:24,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-08 19:02:24,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 19:02:24,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-08 19:02:24,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2018-12-08 19:02:24,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 19:02:24,618 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2018-12-08 19:02:24,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-08 19:02:24,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-08 19:02:24,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2018-12-08 19:02:24,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 19:02:24,618 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-12-08 19:02:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2018-12-08 19:02:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-12-08 19:02:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-08 19:02:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2018-12-08 19:02:24,619 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2018-12-08 19:02:24,619 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2018-12-08 19:02:24,619 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 19:02:24,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2018-12-08 19:02:24,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 19:02:24,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 19:02:24,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 19:02:24,620 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-12-08 19:02:24,620 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 19:02:24,620 INFO L794 eck$LassoCheckResult]: Stem: 318#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~d~0;havoc main_~x~0;havoc main_~y~0;havoc main_~d~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~d~0 := main_#t~nondet2;havoc main_#t~nondet2; 319#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 320#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1;main_~d~0 := main_#t~nondet4;havoc main_#t~nondet4; 321#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 314#L21 [2018-12-08 19:02:24,620 INFO L796 eck$LassoCheckResult]: Loop: 314#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~y~0 := main_~y~0 - 1;main_~d~0 := main_~d~0 - 1; 315#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 314#L21 [2018-12-08 19:02:24,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,621 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-12-08 19:02:24,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-12-08 19:02:24,625 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,626 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,628 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 3 times [2018-12-08 19:02:24,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,629 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,651 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:24,651 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:24,651 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:24,651 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:24,651 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 19:02:24,651 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,651 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:24,651 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:24,651 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-08 19:02:24,651 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:24,651 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:24,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,700 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:24,700 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,701 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:24,701 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,717 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 19:02:24,717 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:24,768 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 19:02:24,769 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:24,769 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:24,770 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:24,770 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:24,770 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 19:02:24,770 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,770 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:24,770 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:24,770 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration5_Loop [2018-12-08 19:02:24,770 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:24,770 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:24,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,815 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:24,815 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 19:02:24,816 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,816 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,816 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,816 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,816 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,817 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 19:02:24,817 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 19:02:24,818 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 19:02:24,818 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:24,818 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:24,818 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:24,818 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:24,818 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:24,818 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:24,818 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:24,819 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:24,820 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 19:02:24,821 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 19:02:24,821 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 19:02:24,821 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 19:02:24,822 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 19:02:24,822 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 19:02:24,822 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~d~0) = 1*ULTIMATE.start_main_~d~0 Supporting invariants [] [2018-12-08 19:02:24,822 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 19:02:24,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,842 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,842 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-12-08 19:02:24,850 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2018-12-08 19:02:24,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-12-08 19:02:24,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 19:02:24,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,851 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 19:02:24,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,868 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,868 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-12-08 19:02:24,877 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2018-12-08 19:02:24,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-12-08 19:02:24,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 19:02:24,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,878 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 19:02:24,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:24,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:24,897 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-08 19:02:24,897 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-12-08 19:02:24,905 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 13 states and 19 transitions. Complement of second has 4 states. [2018-12-08 19:02:24,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 19:02:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-08 19:02:24,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-08 19:02:24,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-08 19:02:24,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-08 19:02:24,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:24,907 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2018-12-08 19:02:24,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-12-08 19:02:24,908 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 11 states and 16 transitions. [2018-12-08 19:02:24,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-12-08 19:02:24,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-12-08 19:02:24,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-12-08 19:02:24,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 19:02:24,908 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 19:02:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-12-08 19:02:24,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2018-12-08 19:02:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 19:02:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-08 19:02:24,910 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 19:02:24,910 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 19:02:24,910 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 19:02:24,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-08 19:02:24,910 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-08 19:02:24,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 19:02:24,911 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 19:02:24,911 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-12-08 19:02:24,911 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-12-08 19:02:24,911 INFO L794 eck$LassoCheckResult]: Stem: 445#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0, main_~d~0;havoc main_~x~0;havoc main_~y~0;havoc main_~d~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~d~0 := main_#t~nondet2;havoc main_#t~nondet2; 446#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 443#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1;main_~d~0 := main_#t~nondet4;havoc main_#t~nondet4; 444#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 441#L21 [2018-12-08 19:02:24,911 INFO L796 eck$LassoCheckResult]: Loop: 441#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5;main_~y~0 := main_~y~0 - 1;main_~d~0 := main_~d~0 - 1; 442#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 443#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1;main_~d~0 := main_#t~nondet4;havoc main_#t~nondet4; 444#L21-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~d~0 > 0); 441#L21 [2018-12-08 19:02:24,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,911 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 3 times [2018-12-08 19:02:24,911 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,912 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2018-12-08 19:02:24,917 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 19:02:24,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:24,923 INFO L82 PathProgramCache]: Analyzing trace with hash 602329151, now seen corresponding path program 4 times [2018-12-08 19:02:24,923 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:02:24,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:02:24,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:02:24,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:02:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:02:24,967 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:24,967 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:24,967 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:24,968 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:24,968 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 19:02:24,968 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:24,968 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:24,968 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:24,968 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-08 19:02:24,968 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:24,968 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:24,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:24,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:25,015 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:25,015 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:25,016 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 19:02:25,017 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b78c9306-a393-413d-899b-661ac5e2f012/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:25,032 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 19:02:25,032 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 19:02:25,071 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 19:02:25,072 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 19:02:25,073 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 19:02:25,073 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 19:02:25,073 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 19:02:25,073 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 19:02:25,073 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 19:02:25,073 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 19:02:25,073 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 19:02:25,073 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7a_true-termination_true-no-overflow.c_Iteration6_Loop [2018-12-08 19:02:25,073 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 19:02:25,073 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 19:02:25,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:25,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:25,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:25,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:25,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:25,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 19:02:25,120 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 19:02:25,120 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 19:02:25,121 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-08 19:02:25,121 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 19:02:25,121 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 19:02:25,121 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 19:02:25,121 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 19:02:25,122 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 19:02:25,122 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 19:02:25,122 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 19:02:25,124 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 19:02:25,125 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 19:02:25,125 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 19:02:25,126 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 19:02:25,126 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 19:02:25,126 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 19:02:25,126 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 19:02:25,126 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 19:02:25,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:02:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:25,141 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:02:25,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:02:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:02:25,167 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-08 19:02:25,167 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-12-08 19:02:25,177 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 20 states and 29 transitions. Complement of second has 6 states. [2018-12-08 19:02:25,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 19:02:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 19:02:25,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-12-08 19:02:25,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-08 19:02:25,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:25,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2018-12-08 19:02:25,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:25,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2018-12-08 19:02:25,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 19:02:25,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 29 transitions. [2018-12-08 19:02:25,179 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 19:02:25,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2018-12-08 19:02:25,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 19:02:25,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 19:02:25,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 19:02:25,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 19:02:25,179 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 19:02:25,179 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 19:02:25,179 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 19:02:25,179 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-08 19:02:25,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 19:02:25,180 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 19:02:25,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 19:02:25,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 07:02:25 BoogieIcfgContainer [2018-12-08 19:02:25,184 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 19:02:25,184 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 19:02:25,184 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 19:02:25,184 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 19:02:25,184 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:02:23" (3/4) ... [2018-12-08 19:02:25,187 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 19:02:25,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 19:02:25,187 INFO L168 Benchmark]: Toolchain (without parser) took 2325.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 218.6 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -85.1 MB). Peak memory consumption was 133.5 MB. Max. memory is 11.5 GB. [2018-12-08 19:02:25,188 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:02:25,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 120.61 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-08 19:02:25,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.05 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:02:25,189 INFO L168 Benchmark]: Boogie Preprocessor took 10.57 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-08 19:02:25,189 INFO L168 Benchmark]: RCFGBuilder took 140.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-08 19:02:25,189 INFO L168 Benchmark]: BuchiAutomizer took 2030.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.4 MB). Peak memory consumption was 151.0 MB. Max. memory is 11.5 GB. [2018-12-08 19:02:25,190 INFO L168 Benchmark]: Witness Printer took 2.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:02:25,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 120.61 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.05 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.57 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 140.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2030.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 63.4 MB). Peak memory consumption was 151.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function d and consists of 3 locations. One deterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function d and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 41 SDtfs, 27 SDslu, 8 SDs, 0 SdLazy, 57 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax147 hnf100 lsp27 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq157 hnf93 smp100 dnf100 smp100 tf113 neg100 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...