./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_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_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/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 df3ddc93bc6339292c9158119f1fdb949bb8842d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 03:49:12,474 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 03:49:12,475 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 03:49:12,481 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 03:49:12,481 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 03:49:12,482 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 03:49:12,482 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 03:49:12,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 03:49:12,484 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 03:49:12,484 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 03:49:12,485 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 03:49:12,485 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 03:49:12,485 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 03:49:12,486 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 03:49:12,487 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 03:49:12,487 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 03:49:12,487 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 03:49:12,488 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 03:49:12,489 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 03:49:12,490 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 03:49:12,490 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 03:49:12,491 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 03:49:12,492 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 03:49:12,492 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 03:49:12,492 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 03:49:12,493 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 03:49:12,493 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 03:49:12,494 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 03:49:12,494 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 03:49:12,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 03:49:12,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 03:49:12,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 03:49:12,495 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 03:49:12,495 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 03:49:12,496 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 03:49:12,496 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 03:49:12,496 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-02 03:49:12,504 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 03:49:12,504 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 03:49:12,505 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 03:49:12,505 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 03:49:12,505 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 03:49:12,505 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-02 03:49:12,505 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-02 03:49:12,505 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-02 03:49:12,505 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-02 03:49:12,505 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-02 03:49:12,505 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-02 03:49:12,506 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 03:49:12,506 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-02 03:49:12,506 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 03:49:12,507 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 03:49:12,507 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-02 03:49:12,507 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 03:49:12,507 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 03:49:12,507 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-02 03:49:12,507 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-02 03:49:12,508 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_4577dd75-0e99-4438-80a1-6c50237e0398/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 -> df3ddc93bc6339292c9158119f1fdb949bb8842d [2018-12-02 03:49:12,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 03:49:12,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 03:49:12,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 03:49:12,533 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 03:49:12,534 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 03:49:12,534 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2018-12-02 03:49:12,568 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/data/5e25b295a/d6d7fb7ebad04d0785e33d02494ff069/FLAG5b093e6d7 [2018-12-02 03:49:12,997 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 03:49:12,997 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2018-12-02 03:49:13,001 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/data/5e25b295a/d6d7fb7ebad04d0785e33d02494ff069/FLAG5b093e6d7 [2018-12-02 03:49:13,009 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/data/5e25b295a/d6d7fb7ebad04d0785e33d02494ff069 [2018-12-02 03:49:13,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 03:49:13,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 03:49:13,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 03:49:13,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 03:49:13,015 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 03:49:13,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13, skipping insertion in model container [2018-12-02 03:49:13,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 03:49:13,029 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 03:49:13,108 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 03:49:13,110 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 03:49:13,118 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 03:49:13,125 INFO L195 MainTranslator]: Completed translation [2018-12-02 03:49:13,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13 WrapperNode [2018-12-02 03:49:13,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 03:49:13,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 03:49:13,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 03:49:13,126 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 03:49:13,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 03:49:13,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 03:49:13,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 03:49:13,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 03:49:13,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... [2018-12-02 03:49:13,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 03:49:13,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 03:49:13,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 03:49:13,155 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 03:49:13,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 03:49:13,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 03:49:13,288 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 03:49:13,288 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-02 03:49:13,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:49:13 BoogieIcfgContainer [2018-12-02 03:49:13,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 03:49:13,289 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-02 03:49:13,289 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-02 03:49:13,292 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-02 03:49:13,293 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 03:49:13,293 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 03:49:13" (1/3) ... [2018-12-02 03:49:13,294 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b9f34a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 03:49:13, skipping insertion in model container [2018-12-02 03:49:13,294 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 03:49:13,294 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:49:13" (2/3) ... [2018-12-02 03:49:13,295 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b9f34a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 03:49:13, skipping insertion in model container [2018-12-02 03:49:13,295 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 03:49:13,295 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:49:13" (3/3) ... [2018-12-02 03:49:13,296 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c [2018-12-02 03:49:13,338 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 03:49:13,338 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-02 03:49:13,339 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-02 03:49:13,339 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-02 03:49:13,339 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 03:49:13,339 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 03:49:13,339 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-02 03:49:13,339 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 03:49:13,339 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-02 03:49:13,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-02 03:49:13,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:13,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 03:49:13,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 03:49:13,363 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-02 03:49:13,363 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 03:49:13,363 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-02 03:49:13,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-02 03:49:13,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:13,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 03:49:13,364 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 03:49:13,364 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-02 03:49:13,364 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 03:49:13,369 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 3#L17-2true [2018-12-02 03:49:13,369 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_~x~0); 5#L17true assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 3#L17-2true [2018-12-02 03:49:13,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:13,373 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-02 03:49:13,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:13,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:13,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,407 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:13,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:13,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-02 03:49:13,430 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:13,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:13,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:13,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-02 03:49:13,438 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:13,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:13,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:13,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,480 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:13,480 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:13,481 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:13,481 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:13,481 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 03:49:13,481 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,481 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:13,481 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:13,481 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-02 03:49:13,481 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:13,481 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:13,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,554 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:13,554 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,557 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:13,558 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:13,576 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 03:49:13,576 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_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,579 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:13,579 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:13,595 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 03:49:13,595 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_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,598 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:13,599 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,616 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 03:49:13,616 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:13,633 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 03:49:13,634 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:13,634 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:13,634 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:13,634 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:13,634 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 03:49:13,634 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,634 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:13,634 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:13,634 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-02 03:49:13,634 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:13,634 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:13,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,672 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:13,675 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 03:49:13,676 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:13,677 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:13,677 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:13,678 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:13,678 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:13,680 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 03:49:13,680 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 03:49:13,686 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 03:49:13,686 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:13,686 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:13,686 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:13,686 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:13,687 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:13,688 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 03:49:13,688 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 03:49:13,692 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 03:49:13,693 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:13,693 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:13,693 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 03:49:13,693 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:13,694 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:13,694 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:13,694 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 03:49:13,694 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 03:49:13,697 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 03:49:13,699 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 03:49:13,699 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 03:49:13,700 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 03:49:13,700 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 03:49:13,700 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 03:49:13,701 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-02 03:49:13,701 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 03:49:13,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:13,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:13,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:13,739 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 03:49:13,740 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-12-02 03:49:13,764 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2018-12-02 03:49:13,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 03:49:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 03:49:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-12-02 03:49:13,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-02 03:49:13,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:13,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-02 03:49:13,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:13,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-02 03:49:13,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:13,768 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-12-02 03:49:13,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:13,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-12-02 03:49:13,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-02 03:49:13,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-02 03:49:13,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-12-02 03:49:13,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 03:49:13,773 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-02 03:49:13,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-12-02 03:49:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-02 03:49:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-02 03:49:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-02 03:49:13,789 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-02 03:49:13,789 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-02 03:49:13,789 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-02 03:49:13,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-02 03:49:13,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:13,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 03:49:13,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 03:49:13,790 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-02 03:49:13,790 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 03:49:13,790 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L17-2 assume !!(0 != main_~x~0); 67#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 63#L17-2 [2018-12-02 03:49:13,790 INFO L796 eck$LassoCheckResult]: Loop: 63#L17-2 assume !!(0 != main_~x~0); 64#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 63#L17-2 [2018-12-02 03:49:13,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-12-02 03:49:13,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:13,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:13,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:13,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:13,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-12-02 03:49:13,796 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:13,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:13,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:13,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:13,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:13,800 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-12-02 03:49:13,800 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:13,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:13,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,801 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 03:49:13,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:13,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 03:49:13,826 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 03:49:13,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:13,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:13,860 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-02 03:49:13,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-12-02 03:49:13,871 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:13,871 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:13,871 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:13,871 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:13,872 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 03:49:13,872 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,872 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:13,872 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:13,872 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-02 03:49:13,872 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:13,872 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:13,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,904 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:13,904 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,906 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:13,906 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:13,931 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 03:49:13,931 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_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,933 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:13,933 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:13,957 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 03:49:13,957 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,960 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:13,960 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,976 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 03:49:13,976 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:13,992 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 03:49:13,993 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:13,993 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:13,994 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:13,994 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:13,994 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 03:49:13,994 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:13,994 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:13,994 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:13,994 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-02 03:49:13,994 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:13,994 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:13,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:13,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,027 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:14,027 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 03:49:14,027 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:14,028 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:14,028 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:14,028 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:14,028 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:14,029 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 03:49:14,029 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 03:49:14,032 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 03:49:14,032 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:14,033 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:14,033 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:14,033 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:14,033 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:14,034 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 03:49:14,034 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 03:49:14,038 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 03:49:14,038 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:14,039 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:14,039 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 03:49:14,040 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:14,040 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:14,040 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:14,040 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 03:49:14,041 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 03:49:14,044 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 03:49:14,046 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 03:49:14,047 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 03:49:14,047 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 03:49:14,047 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 03:49:14,047 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 03:49:14,047 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-02 03:49:14,048 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 03:49:14,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:14,061 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 03:49:14,061 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-02 03:49:14,067 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. [2018-12-02 03:49:14,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 03:49:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 03:49:14,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-02 03:49:14,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-02 03:49:14,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-02 03:49:14,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-12-02 03:49:14,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-12-02 03:49:14,069 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:14,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-12-02 03:49:14,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-02 03:49:14,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-02 03:49:14,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-12-02 03:49:14,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 03:49:14,070 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-02 03:49:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-12-02 03:49:14,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-02 03:49:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-02 03:49:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-12-02 03:49:14,071 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-02 03:49:14,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 03:49:14,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 03:49:14,073 INFO L87 Difference]: Start difference. First operand 11 states and 16 transitions. Second operand 4 states. [2018-12-02 03:49:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 03:49:14,092 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2018-12-02 03:49:14,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 03:49:14,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-12-02 03:49:14,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:14,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2018-12-02 03:49:14,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-02 03:49:14,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-02 03:49:14,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2018-12-02 03:49:14,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 03:49:14,094 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-12-02 03:49:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2018-12-02 03:49:14,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-12-02 03:49:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-02 03:49:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-12-02 03:49:14,095 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-02 03:49:14,095 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-12-02 03:49:14,095 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-02 03:49:14,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-12-02 03:49:14,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:14,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 03:49:14,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 03:49:14,095 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 03:49:14,095 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 03:49:14,096 INFO L794 eck$LassoCheckResult]: Stem: 157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 158#L17-2 assume !!(0 != main_~x~0); 154#L17 [2018-12-02 03:49:14,096 INFO L796 eck$LassoCheckResult]: Loop: 154#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 153#L17-2 assume !!(0 != main_~x~0); 154#L17 [2018-12-02 03:49:14,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-12-02 03:49:14,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:14,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:14,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:14,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-12-02 03:49:14,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:14,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:14,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:14,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 2 times [2018-12-02 03:49:14,103 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:14,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:14,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 03:49:14,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,114 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:14,114 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:14,114 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:14,114 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:14,114 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 03:49:14,115 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,115 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:14,115 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:14,115 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-02 03:49:14,115 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:14,115 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:14,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,169 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:14,169 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:14,171 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:14,194 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 03:49:14,194 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_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,197 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:14,197 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,218 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 03:49:14,218 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:14,287 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 03:49:14,288 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:14,288 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:14,288 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:14,288 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:14,288 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 03:49:14,288 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,288 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:14,288 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:14,288 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-02 03:49:14,288 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:14,289 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:14,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,341 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:14,341 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 03:49:14,341 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:14,342 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:14,342 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:14,342 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:14,342 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:14,343 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 03:49:14,343 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 03:49:14,345 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 03:49:14,345 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:14,346 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:14,346 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 03:49:14,346 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:14,346 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-02 03:49:14,346 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:14,347 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-02 03:49:14,347 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 03:49:14,350 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 03:49:14,352 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 03:49:14,352 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 03:49:14,353 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 03:49:14,353 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 03:49:14,353 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 03:49:14,353 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-12-02 03:49:14,353 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 03:49:14,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:14,379 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 03:49:14,379 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-12-02 03:49:14,385 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 11 states and 13 transitions. Complement of second has 5 states. [2018-12-02 03:49:14,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 03:49:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 03:49:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-02 03:49:14,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-02 03:49:14,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 03:49:14,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,386 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-02 03:49:14,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2018-12-02 03:49:14,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:14,387 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2018-12-02 03:49:14,387 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-02 03:49:14,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-12-02 03:49:14,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2018-12-02 03:49:14,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 03:49:14,388 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-12-02 03:49:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2018-12-02 03:49:14,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-12-02 03:49:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-02 03:49:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-12-02 03:49:14,389 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-02 03:49:14,389 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-02 03:49:14,389 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-02 03:49:14,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-12-02 03:49:14,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 03:49:14,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 03:49:14,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 03:49:14,390 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-12-02 03:49:14,390 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 03:49:14,390 INFO L794 eck$LassoCheckResult]: Stem: 207#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0; 203#L17-2 assume !!(0 != main_~x~0); 204#L17 assume main_~x~0 > 0;main_~x~0 := main_~x~0 - 1; 205#L17-2 assume !!(0 != main_~x~0); 206#L17 [2018-12-02 03:49:14,390 INFO L796 eck$LassoCheckResult]: Loop: 206#L17 assume !(main_~x~0 > 0);main_~x~0 := 1 + main_~x~0; 208#L17-2 assume !!(0 != main_~x~0); 206#L17 [2018-12-02 03:49:14,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,391 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-12-02 03:49:14,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:14,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:14,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 03:49:14,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-12-02 03:49:14,396 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:14,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:14,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 03:49:14,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 03:49:14,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,399 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 2 times [2018-12-02 03:49:14,399 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 03:49:14,399 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 03:49:14,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,400 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 03:49:14,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 03:49:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:14,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 03:49:14,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 03:49:14,430 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:14,430 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:14,430 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:14,430 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:14,430 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 03:49:14,430 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,430 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:14,430 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:14,430 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-02 03:49:14,430 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:14,430 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:14,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,486 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:14,487 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,490 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:14,490 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:14,505 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 03:49:14,505 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,507 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 03:49:14,508 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4577dd75-0e99-4438-80a1-6c50237e0398/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,524 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 03:49:14,524 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 03:49:14,582 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 03:49:14,583 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 03:49:14,583 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 03:49:14,583 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 03:49:14,584 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 03:49:14,584 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 03:49:14,584 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 03:49:14,584 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 03:49:14,584 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 03:49:14,584 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-02 03:49:14,584 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 03:49:14,584 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 03:49:14,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 03:49:14,642 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 03:49:14,642 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 03:49:14,643 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:14,643 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:14,643 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:14,643 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 03:49:14,643 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:14,644 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 03:49:14,644 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 03:49:14,646 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 03:49:14,646 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 03:49:14,646 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 03:49:14,647 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 03:49:14,647 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 03:49:14,647 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-02 03:49:14,647 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 03:49:14,647 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-02 03:49:14,647 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 03:49:14,649 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 03:49:14,651 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 03:49:14,651 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-02 03:49:14,651 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 03:49:14,651 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 03:49:14,651 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 03:49:14,652 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-12-02 03:49:14,652 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 03:49:14,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:14,673 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 03:49:14,674 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-02 03:49:14,676 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-12-02 03:49:14,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-02 03:49:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 03:49:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-02 03:49:14,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 03:49:14,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,677 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 03:49:14,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,692 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:14,702 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 03:49:14,702 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-02 03:49:14,705 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 7 states and 8 transitions. Complement of second has 3 states. [2018-12-02 03:49:14,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-12-02 03:49:14,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 03:49:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2 transitions. [2018-12-02 03:49:14,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 2 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 03:49:14,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,707 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 03:49:14,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 03:49:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 03:49:14,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 03:49:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 03:49:14,728 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-02 03:49:14,728 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-02 03:49:14,733 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 4 states. [2018-12-02 03:49:14,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 03:49:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 03:49:14,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-02 03:49:14,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 03:49:14,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-02 03:49:14,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-02 03:49:14,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 03:49:14,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2018-12-02 03:49:14,735 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 03:49:14,735 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2018-12-02 03:49:14,735 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 03:49:14,735 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 03:49:14,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 03:49:14,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 03:49:14,736 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 03:49:14,736 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 03:49:14,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 03:49:14,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-02 03:49:14,736 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-12-02 03:49:14,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 03:49:14,736 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-02 03:49:14,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 03:49:14,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-02 03:49:14,736 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 03:49:14,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 03:49:14,736 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 03:49:14,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 03:49:14,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 03:49:14,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 03:49:14,737 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 03:49:14,737 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 03:49:14,737 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 03:49:14,737 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-02 03:49:14,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-02 03:49:14,737 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 03:49:14,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-02 03:49:14,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 03:49:14 BoogieIcfgContainer [2018-12-02 03:49:14,741 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-02 03:49:14,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 03:49:14,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 03:49:14,741 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 03:49:14,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:49:13" (3/4) ... [2018-12-02 03:49:14,744 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 03:49:14,744 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 03:49:14,744 INFO L168 Benchmark]: Toolchain (without parser) took 1732.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 954.4 MB in the beginning and 819.8 MB in the end (delta: 134.6 MB). Peak memory consumption was 256.2 MB. Max. memory is 11.5 GB. [2018-12-02 03:49:14,745 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 03:49:14,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 113.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 946.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-02 03:49:14,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.85 ms. Allocated memory is still 1.0 GB. Free memory was 946.2 MB in the beginning and 943.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 03:49:14,747 INFO L168 Benchmark]: Boogie Preprocessor took 10.38 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 03:49:14,747 INFO L168 Benchmark]: RCFGBuilder took 134.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -164.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-12-02 03:49:14,748 INFO L168 Benchmark]: BuchiAutomizer took 1451.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 819.8 MB in the end (delta: 288.2 MB). Peak memory consumption was 288.2 MB. Max. memory is 11.5 GB. [2018-12-02 03:49:14,748 INFO L168 Benchmark]: Witness Printer took 2.65 ms. Allocated memory is still 1.2 GB. Free memory is still 819.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 03:49:14,750 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 113.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 946.2 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.85 ms. Allocated memory is still 1.0 GB. Free memory was 946.2 MB in the beginning and 943.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.38 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 134.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -164.4 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1451.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 819.8 MB in the end (delta: 288.2 MB). Peak memory consumption was 288.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.65 ms. Allocated memory is still 1.2 GB. Free memory is still 819.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 1 and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 20 SDtfs, 18 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax200 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp100 dnf132 smp89 tf110 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...