./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:06:16,434 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:06:16,437 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:06:16,448 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:06:16,448 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:06:16,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:06:16,450 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:06:16,451 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:06:16,454 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:06:16,455 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:06:16,456 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:06:16,456 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:06:16,457 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:06:16,457 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:06:16,458 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:06:16,459 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:06:16,459 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:06:16,467 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:06:16,468 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:06:16,469 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:06:16,470 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:06:16,471 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:06:16,475 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:06:16,476 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:06:16,476 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:06:16,476 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:06:16,477 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:06:16,478 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:06:16,478 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:06:16,479 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:06:16,479 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:06:16,480 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:06:16,482 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:06:16,482 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:06:16,483 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:06:16,483 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:06:16,484 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:06:16,498 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:06:16,499 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:06:16,499 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:06:16,500 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:06:16,502 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:06:16,503 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:06:16,503 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:06:16,503 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:06:16,503 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:06:16,503 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:06:16,503 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:06:16,503 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:06:16,504 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:06:16,505 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:06:16,505 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:06:16,505 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:06:16,505 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:06:16,505 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:06:16,505 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:06:16,505 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:06:16,506 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:06:16,506 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_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a661b9ed427d2e9174ef6e6cb1f5d6d0ab8d9e2 [2018-10-27 06:06:16,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:06:16,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:06:16,560 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:06:16,562 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:06:16,562 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:06:16,562 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-10-27 06:06:16,613 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/data/2fbde497a/4da6df2bd7d446df8f6603b2f18c1ca6/FLAGadf341d35 [2018-10-27 06:06:16,950 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:06:16,951 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-10-27 06:06:16,956 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/data/2fbde497a/4da6df2bd7d446df8f6603b2f18c1ca6/FLAGadf341d35 [2018-10-27 06:06:16,968 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/data/2fbde497a/4da6df2bd7d446df8f6603b2f18c1ca6 [2018-10-27 06:06:16,971 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:06:16,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:06:16,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:16,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:06:16,978 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:06:16,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:16" (1/1) ... [2018-10-27 06:06:16,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a3fe71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:16, skipping insertion in model container [2018-10-27 06:06:16,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:06:16" (1/1) ... [2018-10-27 06:06:16,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:06:17,003 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:06:17,127 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:17,129 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:06:17,139 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:06:17,150 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:06:17,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17 WrapperNode [2018-10-27 06:06:17,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:06:17,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:17,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:06:17,151 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:06:17,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:06:17,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:06:17,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:06:17,177 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:06:17,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... [2018-10-27 06:06:17,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:06:17,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:06:17,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:06:17,192 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:06:17,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:06:17,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:06:17,449 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:06:17,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:17 BoogieIcfgContainer [2018-10-27 06:06:17,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:06:17,451 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:06:17,451 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:06:17,454 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:06:17,455 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:17,455 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:06:16" (1/3) ... [2018-10-27 06:06:17,457 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a5d60cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:17, skipping insertion in model container [2018-10-27 06:06:17,457 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:17,457 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:06:17" (2/3) ... [2018-10-27 06:06:17,457 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a5d60cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:06:17, skipping insertion in model container [2018-10-27 06:06:17,457 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:06:17,457 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:17" (3/3) ... [2018-10-27 06:06:17,459 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c [2018-10-27 06:06:17,513 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:06:17,513 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:06:17,513 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:06:17,513 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:06:17,514 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:06:17,514 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:06:17,514 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:06:17,514 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:06:17,514 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:06:17,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:06:17,548 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:17,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:17,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:17,555 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:17,555 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:17,555 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:06:17,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:06:17,556 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:17,557 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:17,557 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:17,557 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:06:17,557 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:17,565 INFO L793 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2018-10-27 06:06:17,565 INFO L795 eck$LassoCheckResult]: Loop: 5#L18-2true assume true; 6#L17-1true assume !!(main_~x~0 != main_~K~0); 8#L18true assume !(main_~x~0 > main_~K~0);main_~x~0 := main_~x~0 + 1; 5#L18-2true [2018-10-27 06:06:17,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:17,571 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:06:17,573 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:17,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:17,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:17,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:17,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:17,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:17,668 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-10-27 06:06:17,669 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:17,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:17,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:17,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:17,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:17,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:17,689 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-10-27 06:06:17,689 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:17,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:17,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:17,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:17,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:17,814 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-27 06:06:17,871 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:17,872 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:17,872 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:17,872 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:17,872 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:17,873 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:17,873 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:17,873 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:17,873 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:06:17,873 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:17,873 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:17,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:17,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:17,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:18,043 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:18,044 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/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) [2018-10-27 06:06:18,057 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:18,057 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:18,083 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:18,083 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:18,090 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:18,090 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:18,108 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:18,108 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:18,111 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:18,111 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:18,130 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:18,130 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:18,301 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:18,302 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:18,302 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:18,302 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:18,302 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:18,302 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:18,302 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:18,302 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:18,302 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:18,303 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:06:18,303 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:18,303 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:18,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:18,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:18,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:18,465 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 06:06:18,614 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:18,619 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:18,620 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:18,622 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:18,622 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:18,622 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:18,623 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:18,627 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:18,628 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:18,637 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:18,638 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:18,638 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:18,638 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:18,639 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:18,639 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:18,641 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:18,642 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:18,653 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:18,653 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:18,655 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:18,655 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:18,655 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:18,656 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:18,656 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:18,657 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:18,657 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:18,663 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:18,670 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:06:18,671 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:18,673 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:18,673 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:18,673 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:18,674 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~K~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:18,675 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:18,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:18,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:18,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:18,791 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:06:18,793 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2018-10-27 06:06:18,877 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 6 states. [2018-10-27 06:06:18,880 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 [2018-10-27 06:06:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:06:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2018-10-27 06:06:18,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 3 letters. [2018-10-27 06:06:18,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:18,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:06:18,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:18,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 6 letters. [2018-10-27 06:06:18,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:18,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-10-27 06:06:18,890 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:18,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 11 states and 14 transitions. [2018-10-27 06:06:18,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-10-27 06:06:18,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-10-27 06:06:18,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2018-10-27 06:06:18,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:18,897 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:06:18,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2018-10-27 06:06:18,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-27 06:06:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-27 06:06:18,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-10-27 06:06:18,921 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:06:18,921 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2018-10-27 06:06:18,921 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:06:18,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2018-10-27 06:06:18,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:18,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:18,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:18,922 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:06:18,922 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:18,922 INFO L793 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 75#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 76#L18-2 assume true; 84#L17-1 assume !!(main_~x~0 != main_~K~0); 85#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 82#L18-2 [2018-10-27 06:06:18,923 INFO L795 eck$LassoCheckResult]: Loop: 82#L18-2 assume true; 77#L17-1 assume !!(main_~x~0 != main_~K~0); 78#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := main_~x~0 + 1; 82#L18-2 [2018-10-27 06:06:18,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:18,923 INFO L82 PathProgramCache]: Analyzing trace with hash 28694886, now seen corresponding path program 1 times [2018-10-27 06:06:18,923 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:18,923 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:18,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:18,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:18,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:18,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:18,932 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 2 times [2018-10-27 06:06:18,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:18,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:18,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:18,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:18,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:18,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:18,941 INFO L82 PathProgramCache]: Analyzing trace with hash 150863077, now seen corresponding path program 1 times [2018-10-27 06:06:18,941 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:18,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:18,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:18,942 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:18,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:19,012 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:06:19,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 06:06:19,044 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:19,044 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:19,044 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:19,044 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:19,044 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:19,044 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:19,045 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:19,045 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:19,045 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:06:19,045 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:19,045 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:19,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:19,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:19,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:19,233 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:19,233 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 06:06:19,238 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:19,238 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:19,259 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:19,259 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:19,264 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:19,264 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:19,284 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:19,284 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:19,292 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:19,293 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:19,318 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:19,318 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:19,517 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:19,519 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:19,519 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:19,519 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:19,519 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:19,519 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:19,519 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:19,519 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:19,519 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:19,520 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:06:19,520 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:19,520 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:19,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:19,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:19,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:19,664 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 06:06:19,960 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:19,961 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:19,961 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:19,962 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:19,962 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:19,962 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:19,962 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:19,964 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:19,965 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:19,970 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:19,971 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:19,971 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:19,971 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:19,971 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:19,971 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:19,973 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:19,973 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:19,981 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:19,981 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:19,983 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:19,983 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:19,983 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:19,983 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:19,983 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:19,984 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:19,984 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:19,987 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:19,992 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:06:19,992 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:19,993 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:19,993 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:19,993 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:19,993 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~K~0 - 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:19,994 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:20,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:20,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:20,099 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:20,099 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-10-27 06:06:20,099 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-10-27 06:06:20,115 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 17 states and 22 transitions. Complement of second has 5 states. [2018-10-27 06:06:20,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-10-27 06:06:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-10-27 06:06:20,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 3 letters. [2018-10-27 06:06:20,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:20,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2018-10-27 06:06:20,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:20,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 6 letters. [2018-10-27 06:06:20,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:20,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2018-10-27 06:06:20,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:20,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 22 transitions. [2018-10-27 06:06:20,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-10-27 06:06:20,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:06:20,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2018-10-27 06:06:20,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:20,119 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-10-27 06:06:20,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2018-10-27 06:06:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-27 06:06:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-27 06:06:20,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2018-10-27 06:06:20,122 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2018-10-27 06:06:20,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:06:20,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:06:20,125 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand 4 states. [2018-10-27 06:06:20,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:06:20,140 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2018-10-27 06:06:20,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 06:06:20,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2018-10-27 06:06:20,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:20,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 16 transitions. [2018-10-27 06:06:20,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-10-27 06:06:20,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:06:20,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2018-10-27 06:06:20,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:20,143 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2018-10-27 06:06:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2018-10-27 06:06:20,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 9. [2018-10-27 06:06:20,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 06:06:20,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-10-27 06:06:20,144 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-27 06:06:20,145 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2018-10-27 06:06:20,145 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:06:20,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2018-10-27 06:06:20,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:20,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:20,145 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:20,146 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:06:20,146 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:20,146 INFO L793 eck$LassoCheckResult]: Stem: 184#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 182#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 183#L18-2 assume true; 186#L17-1 [2018-10-27 06:06:20,146 INFO L795 eck$LassoCheckResult]: Loop: 186#L17-1 assume !!(main_~x~0 != main_~K~0); 189#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 185#L18-2 assume true; 186#L17-1 [2018-10-27 06:06:20,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,146 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-10-27 06:06:20,147 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:20,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:20,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:20,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,151 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 1 times [2018-10-27 06:06:20,151 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:20,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:20,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:20,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash 889541472, now seen corresponding path program 2 times [2018-10-27 06:06:20,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:20,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:20,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:06:20,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,195 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:20,195 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:20,195 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:20,195 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:20,195 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:20,196 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,196 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:20,196 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:20,196 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:06:20,196 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:20,196 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:20,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,284 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:20,285 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,288 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:20,288 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:20,311 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:20,311 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,317 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:20,318 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:20,335 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:20,335 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,343 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:20,343 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,362 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:20,362 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:20,570 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:20,571 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:20,571 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:20,571 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:20,571 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:20,571 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:20,571 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,572 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:20,572 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:20,572 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:06:20,572 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:20,572 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:20,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,622 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:20,622 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:20,622 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:20,623 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:20,623 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:20,623 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:20,623 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:20,624 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:20,624 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:20,630 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:20,631 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:20,631 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:20,631 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:20,632 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:20,632 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:20,632 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:20,632 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:20,633 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:20,636 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:20,642 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:06:20,642 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:20,642 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:20,642 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:20,642 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:20,642 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~K~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~K~0 Supporting invariants [] [2018-10-27 06:06:20,643 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:20,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:20,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:20,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:20,748 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:06:20,748 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-10-27 06:06:20,756 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 19 states and 21 transitions. Complement of second has 5 states. [2018-10-27 06:06:20,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-10-27 06:06:20,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2018-10-27 06:06:20,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:20,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-10-27 06:06:20,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:20,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2018-10-27 06:06:20,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:20,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 21 transitions. [2018-10-27 06:06:20,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:20,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 11 states and 12 transitions. [2018-10-27 06:06:20,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-10-27 06:06:20,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-10-27 06:06:20,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2018-10-27 06:06:20,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:06:20,761 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-27 06:06:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2018-10-27 06:06:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-10-27 06:06:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-27 06:06:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-10-27 06:06:20,762 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-27 06:06:20,762 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-27 06:06:20,762 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:06:20,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2018-10-27 06:06:20,762 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-10-27 06:06:20,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:06:20,763 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:06:20,763 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-10-27 06:06:20,763 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-10-27 06:06:20,763 INFO L793 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 249#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~K~0, main_~x~0;havoc main_~K~0;havoc main_~x~0;main_~K~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_#t~nondet1;havoc main_#t~nondet1; 250#L18-2 assume true; 251#L17-1 assume !!(main_~x~0 != main_~K~0); 255#L18 assume !(main_~x~0 > main_~K~0);main_~x~0 := main_~x~0 + 1; 252#L18-2 assume true; 253#L17-1 [2018-10-27 06:06:20,763 INFO L795 eck$LassoCheckResult]: Loop: 253#L17-1 assume !!(main_~x~0 != main_~K~0); 254#L18 assume main_~x~0 > main_~K~0;main_~x~0 := main_~x~0 - 1; 257#L18-2 assume true; 253#L17-1 [2018-10-27 06:06:20,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,763 INFO L82 PathProgramCache]: Analyzing trace with hash 889541534, now seen corresponding path program 2 times [2018-10-27 06:06:20,764 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:20,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:20,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:20,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 2 times [2018-10-27 06:06:20,769 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:20,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:20,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,770 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:20,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:06:20,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:20,774 INFO L82 PathProgramCache]: Analyzing trace with hash 383635077, now seen corresponding path program 2 times [2018-10-27 06:06:20,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:06:20,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:06:20,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:06:20,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:06:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:20,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:06:20,803 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:06:20,811 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-27 06:06:20,817 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-27 06:06:20,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-27 06:06:20,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:20,854 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:06:20,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-27 06:06:20,871 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:20,871 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:20,871 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:20,871 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:20,871 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:06:20,871 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,871 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:20,871 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:20,872 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:06:20,872 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:20,872 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:20,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,884 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:20,987 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:20,988 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:20,992 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:20,992 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:21,009 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:21,009 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:21,013 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:21,014 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:21,034 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:06:21,034 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:21,037 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:06:21,038 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_06545c69-04ba-4c90-8956-3e8cb6f973f8/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:21,058 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:06:21,058 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:06:21,281 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:06:21,282 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:06:21,282 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:06:21,283 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:06:21,283 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:06:21,283 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:06:21,283 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:06:21,283 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:06:21,283 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:06:21,283 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8a-modified_true-termination_true-no-overflow.c_Iteration4_Loop [2018-10-27 06:06:21,283 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:06:21,283 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:06:21,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:21,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:21,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:06:21,378 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:06:21,378 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:06:21,378 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:21,379 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:21,379 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:21,379 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:21,379 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:21,380 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:21,380 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:21,383 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:21,383 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:21,387 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:21,387 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:21,387 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:21,387 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:21,388 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-10-27 06:06:21,388 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-10-27 06:06:21,391 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:06:21,391 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:06:21,392 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:06:21,392 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:06:21,392 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:06:21,392 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:06:21,392 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:06:21,393 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:06:21,393 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:06:21,395 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:06:21,402 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:06:21,402 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:06:21,402 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:06:21,403 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:06:21,403 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:06:21,403 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~K~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~K~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-10-27 06:06:21,403 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:06:21,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:21,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:21,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:21,452 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:06:21,452 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-10-27 06:06:21,459 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-10-27 06:06:21,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:21,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-10-27 06:06:21,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-10-27 06:06:21,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:21,461 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:21,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:21,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:21,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:21,494 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:06:21,494 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-10-27 06:06:21,499 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 12 states and 13 transitions. Complement of second has 5 states. [2018-10-27 06:06:21,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-10-27 06:06:21,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 3 letters. [2018-10-27 06:06:21,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:21,502 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:06:21,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:06:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:21,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:06:21,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:06:21,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:06:21,533 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:06:21,533 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-10-27 06:06:21,543 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 10 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 14 states and 15 transitions. Complement of second has 6 states. [2018-10-27 06:06:21,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-10-27 06:06:21,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:06:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2018-10-27 06:06:21,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-10-27 06:06:21,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:21,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-10-27 06:06:21,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:21,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2018-10-27 06:06:21,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:06:21,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 15 transitions. [2018-10-27 06:06:21,547 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:21,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2018-10-27 06:06:21,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:06:21,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:06:21,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:06:21,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:21,548 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:21,548 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:21,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:06:21,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:06:21,549 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2018-10-27 06:06:21,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:06:21,549 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-10-27 06:06:21,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:06:21,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-10-27 06:06:21,550 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:21,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 06:06:21,550 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:06:21,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:06:21,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:06:21,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:06:21,550 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:21,550 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:21,550 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:06:21,551 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:06:21,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:06:21,551 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:06:21,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:06:21,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:06:21 BoogieIcfgContainer [2018-10-27 06:06:21,559 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:06:21,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:06:21,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:06:21,560 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:06:21,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:06:17" (3/4) ... [2018-10-27 06:06:21,566 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:06:21,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:06:21,567 INFO L168 Benchmark]: Toolchain (without parser) took 4595.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 955.8 MB in the beginning and 895.2 MB in the end (delta: 60.6 MB). Peak memory consumption was 211.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:21,568 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:21,568 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.79 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:21,569 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.15 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:21,569 INFO L168 Benchmark]: Boogie Preprocessor took 14.77 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:21,570 INFO L168 Benchmark]: RCFGBuilder took 258.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:21,570 INFO L168 Benchmark]: BuchiAutomizer took 4108.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.2 MB in the end (delta: 245.4 MB). Peak memory consumption was 245.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:06:21,571 INFO L168 Benchmark]: Witness Printer took 6.72 ms. Allocated memory is still 1.2 GB. Free memory is still 895.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:06:21,579 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 175.79 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.15 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.77 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 258.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -202.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4108.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.2 MB in the end (delta: 245.4 MB). Peak memory consumption was 245.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.72 ms. Allocated memory is still 1.2 GB. Free memory is still 895.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function K + -1 * x and consists of 4 locations. One deterministic module has affine ranking function K + -1 * x and consists of 3 locations. One deterministic module has affine ranking function x + -1 * K and consists of 3 locations. One nondeterministic module has affine ranking function -1 * K + x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 37 SDtfs, 33 SDslu, 10 SDs, 0 SdLazy, 42 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax199 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...