./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/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 413fc6a41e04b7b618ff9ab274418b4a8dcf040d ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 10:44:21,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:44:21,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:44:21,077 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:44:21,077 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:44:21,078 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:44:21,078 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:44:21,079 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:44:21,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:44:21,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:44:21,081 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:44:21,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:44:21,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:44:21,083 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:44:21,084 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:44:21,085 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:44:21,086 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:44:21,087 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:44:21,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:44:21,090 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:44:21,091 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:44:21,092 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:44:21,093 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:44:21,094 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:44:21,094 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:44:21,094 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:44:21,095 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:44:21,095 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:44:21,096 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:44:21,096 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:44:21,096 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:44:21,097 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:44:21,097 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:44:21,097 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:44:21,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:44:21,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:44:21,099 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 10:44:21,110 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:44:21,110 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:44:21,111 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:44:21,111 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:44:21,112 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:44:21,112 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 10:44:21,112 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 10:44:21,112 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 10:44:21,112 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 10:44:21,112 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 10:44:21,112 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 10:44:21,113 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:44:21,113 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 10:44:21,113 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 10:44:21,113 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:44:21,113 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 10:44:21,113 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 10:44:21,114 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 10:44:21,114 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 10:44:21,114 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 10:44:21,114 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:44:21,114 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 10:44:21,114 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:44:21,115 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:44:21,115 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 10:44:21,115 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:44:21,115 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 10:44:21,115 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 10:44:21,116 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 10:44:21,116 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_91c47e9a-254c-4180-8153-9cc974aea484/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 -> 413fc6a41e04b7b618ff9ab274418b4a8dcf040d [2018-11-28 10:44:21,143 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:44:21,154 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:44:21,157 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:44:21,158 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:44:21,159 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:44:21,159 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c [2018-11-28 10:44:21,205 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/data/394c636a3/de6bad7c311b46efb85f7053defaa956/FLAG7d1326a30 [2018-11-28 10:44:21,546 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:44:21,546 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c [2018-11-28 10:44:21,550 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/data/394c636a3/de6bad7c311b46efb85f7053defaa956/FLAG7d1326a30 [2018-11-28 10:44:21,976 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/data/394c636a3/de6bad7c311b46efb85f7053defaa956 [2018-11-28 10:44:21,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:44:21,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 10:44:21,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:44:21,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:44:21,985 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:44:21,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:44:21" (1/1) ... [2018-11-28 10:44:21,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432cdfea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:21, skipping insertion in model container [2018-11-28 10:44:21,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:44:21" (1/1) ... [2018-11-28 10:44:21,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:44:22,008 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:44:22,120 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:44:22,123 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:44:22,135 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:44:22,145 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:44:22,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22 WrapperNode [2018-11-28 10:44:22,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:44:22,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 10:44:22,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 10:44:22,146 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 10:44:22,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,160 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,179 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 10:44:22,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:44:22,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:44:22,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:44:22,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... [2018-11-28 10:44:22,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:44:22,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:44:22,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:44:22,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:44:22,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:44:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:44:22,416 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:44:22,417 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 10:44:22,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:44:22 BoogieIcfgContainer [2018-11-28 10:44:22,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:44:22,417 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 10:44:22,418 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 10:44:22,420 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 10:44:22,421 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 10:44:22,421 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 10:44:21" (1/3) ... [2018-11-28 10:44:22,422 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23200d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 10:44:22, skipping insertion in model container [2018-11-28 10:44:22,422 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 10:44:22,422 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:44:22" (2/3) ... [2018-11-28 10:44:22,422 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23200d21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 10:44:22, skipping insertion in model container [2018-11-28 10:44:22,423 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 10:44:22,423 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:44:22" (3/3) ... [2018-11-28 10:44:22,424 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c [2018-11-28 10:44:22,467 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:44:22,467 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 10:44:22,468 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 10:44:22,468 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 10:44:22,468 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:44:22,468 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:44:22,468 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 10:44:22,468 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:44:22,468 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 10:44:22,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 10:44:22,497 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:22,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:44:22,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:44:22,502 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 10:44:22,502 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:44:22,502 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 10:44:22,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 10:44:22,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:22,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:44:22,503 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:44:22,504 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 10:44:22,504 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:44:22,509 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~M~0 > 0; 7#L19-2true [2018-11-28 10:44:22,509 INFO L796 eck$LassoCheckResult]: Loop: 7#L19-2true assume !!(main_~x~0 != main_~M~0); 9#L19true assume main_~x~0 > main_~M~0;main_~x~0 := 0; 7#L19-2true [2018-11-28 10:44:22,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-28 10:44:22,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:22,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:22,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:22,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:22,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:22,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:22,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-11-28 10:44:22,591 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:22,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:22,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:22,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:22,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:22,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:22,604 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-11-28 10:44:22,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:22,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:22,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:22,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:22,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:22,676 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:44:22,676 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:44:22,677 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:44:22,677 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:44:22,677 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 10:44:22,677 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:22,677 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:44:22,677 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:44:22,677 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 10:44:22,678 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:44:22,678 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:44:22,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:22,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:22,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:22,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:22,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:22,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:22,852 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:44:22,852 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:22,860 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:44:22,860 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:44:22,867 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:44:22,867 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:22,886 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:44:22,886 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:22,908 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 10:44:22,908 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:44:22,995 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 10:44:22,996 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:44:22,996 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:44:22,997 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:44:22,997 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:44:22,997 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 10:44:22,997 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:22,997 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:44:22,997 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:44:22,997 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 10:44:22,997 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:44:22,997 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:44:22,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,071 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:44:23,074 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 10:44:23,075 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 10:44:23,077 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:44:23,077 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:44:23,077 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:44:23,077 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:44:23,081 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:44:23,082 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:44:23,088 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:44:23,089 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 10:44:23,089 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:44:23,090 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:44:23,090 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:44:23,090 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:44:23,092 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:44:23,092 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:44:23,114 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 10:44:23,129 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 10:44:23,129 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 10:44:23,131 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 10:44:23,134 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 10:44:23,134 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 10:44:23,135 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~M~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~M~0 >= 0] [2018-11-28 10:44:23,139 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 10:44:23,200 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:23,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:23,224 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:44:23,239 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 10:44:23,241 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-28 10:44:23,303 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-11-28 10:44:23,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 10:44:23,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:44:23,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-28 10:44:23,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 10:44:23,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:23,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 10:44:23,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:23,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 10:44:23,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:23,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-28 10:44:23,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:23,314 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-11-28 10:44:23,315 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 10:44:23,315 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-28 10:44:23,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-11-28 10:44:23,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 10:44:23,316 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 10:44:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-11-28 10:44:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-28 10:44:23,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 10:44:23,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-11-28 10:44:23,336 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 10:44:23,336 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 10:44:23,337 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 10:44:23,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-11-28 10:44:23,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:23,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:44:23,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:44:23,338 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 10:44:23,338 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:44:23,338 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L17 assume main_~M~0 > 0; 88#L19-2 assume !!(main_~x~0 != main_~M~0); 87#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 83#L19-2 [2018-11-28 10:44:23,338 INFO L796 eck$LassoCheckResult]: Loop: 83#L19-2 assume !!(main_~x~0 != main_~M~0); 84#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 83#L19-2 [2018-11-28 10:44:23,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-11-28 10:44:23,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:23,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:23,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:23,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:23,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-11-28 10:44:23,347 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:23,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:23,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:23,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:23,353 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2018-11-28 10:44:23,353 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:23,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:23,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:44:23,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:44:23,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 10:44:23,402 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 10:44:23,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:23,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:44:23,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 10:44:23,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 10:44:23,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 10:44:23,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 10:44:23,458 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-28 10:44:23,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 10:44:23,477 INFO L93 Difference]: Finished difference Result 8 states and 10 transitions. [2018-11-28 10:44:23,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 10:44:23,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 10 transitions. [2018-11-28 10:44:23,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:23,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 10 transitions. [2018-11-28 10:44:23,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 10:44:23,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-28 10:44:23,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2018-11-28 10:44:23,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 10:44:23,479 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-28 10:44:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2018-11-28 10:44:23,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-28 10:44:23,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 10:44:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-28 10:44:23,481 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 10:44:23,481 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 10:44:23,481 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 10:44:23,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-28 10:44:23,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:23,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:44:23,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:44:23,481 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 10:44:23,481 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:44:23,482 INFO L794 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 124#L17 assume main_~M~0 > 0; 125#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2018-11-28 10:44:23,482 INFO L796 eck$LassoCheckResult]: Loop: 127#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 126#L19-2 assume !!(main_~x~0 != main_~M~0); 127#L19 [2018-11-28 10:44:23,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:23,482 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2018-11-28 10:44:23,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:23,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:23,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:23,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:23,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 1 times [2018-11-28 10:44:23,488 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:23,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:23,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:23,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:23,494 INFO L82 PathProgramCache]: Analyzing trace with hash 29684900, now seen corresponding path program 2 times [2018-11-28 10:44:23,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:23,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:44:23,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:23,516 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:44:23,516 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:44:23,517 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:44:23,517 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:44:23,517 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 10:44:23,517 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:23,517 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:44:23,517 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:44:23,517 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 10:44:23,517 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:44:23,517 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:44:23,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:23,624 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:44:23,624 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:23,639 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:44:23,639 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:44:23,659 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:44:23,659 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:23,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:44:23,664 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:44:23,683 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:44:23,683 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:23,691 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:44:23,691 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:23,719 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 10:44:23,719 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:44:25,380 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 10:44:25,382 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:44:25,383 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:44:25,383 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:44:25,383 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:44:25,383 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 10:44:25,383 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:25,383 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:44:25,383 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:44:25,383 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 10:44:25,383 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:44:25,383 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:44:25,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:25,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:25,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:25,436 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:44:25,436 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 10:44:25,437 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 10:44:25,437 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:44:25,438 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:44:25,438 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:44:25,438 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:44:25,439 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:44:25,440 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:44:25,442 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:44:25,443 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 10:44:25,443 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:44:25,443 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:44:25,444 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:44:25,444 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:44:25,445 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:44:25,445 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:44:25,454 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:44:25,455 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 10:44:25,455 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:44:25,455 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 10:44:25,456 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:44:25,456 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 10:44:25,456 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:44:25,457 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 10:44:25,457 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 10:44:25,461 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 10:44:25,464 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 10:44:25,465 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 10:44:25,465 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 10:44:25,466 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 10:44:25,466 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 10:44:25,466 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~M~0) = -2*ULTIMATE.start_main_~x~0 + 2*ULTIMATE.start_main_~M~0 + 1 Supporting invariants [] [2018-11-28 10:44:25,466 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 10:44:25,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:25,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:25,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:44:25,523 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 10:44:25,523 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 10:44:25,530 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 14 transitions. Complement of second has 5 states. [2018-11-28 10:44:25,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 10:44:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:44:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 10:44:25,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 10:44:25,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:25,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 10:44:25,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:25,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-28 10:44:25,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:25,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-11-28 10:44:25,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:25,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 9 transitions. [2018-11-28 10:44:25,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 10:44:25,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 10:44:25,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2018-11-28 10:44:25,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 10:44:25,533 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-28 10:44:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2018-11-28 10:44:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-28 10:44:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 10:44:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2018-11-28 10:44:25,535 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-28 10:44:25,535 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2018-11-28 10:44:25,535 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 10:44:25,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2018-11-28 10:44:25,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:44:25,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:44:25,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:44:25,536 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-28 10:44:25,536 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:44:25,536 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~M~0;havoc main_~x~0;havoc main_~M~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~M~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L17 assume main_~M~0 > 0; 180#L19-2 assume !!(main_~x~0 != main_~M~0); 181#L19 assume main_~x~0 > main_~M~0;main_~x~0 := 0; 182#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2018-11-28 10:44:25,536 INFO L796 eck$LassoCheckResult]: Loop: 183#L19 assume !(main_~x~0 > main_~M~0);main_~x~0 := 1 + main_~x~0; 184#L19-2 assume !!(main_~x~0 != main_~M~0); 183#L19 [2018-11-28 10:44:25,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2018-11-28 10:44:25,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:25,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:25,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:25,538 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:44:25,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:25,543 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:25,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2018-11-28 10:44:25,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:25,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:25,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:25,545 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:44:25,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:25,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:25,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 2 times [2018-11-28 10:44:25,548 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:44:25,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:44:25,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:25,549 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:44:25,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:44:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:44:25,575 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:44:25,575 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:44:25,575 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:44:25,575 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:44:25,575 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 10:44:25,575 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:25,575 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:44:25,575 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:44:25,575 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 10:44:25,575 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:44:25,576 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:44:25,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:25,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:25,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:25,652 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:44:25,652 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:25,655 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:44:25,655 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:44:25,674 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:44:25,675 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:25,678 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:44:25,679 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_91c47e9a-254c-4180-8153-9cc974aea484/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:25,703 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 10:44:25,703 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:44:27,744 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 10:44:27,747 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:44:27,747 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:44:27,748 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:44:27,748 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:44:27,748 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 10:44:27,748 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:44:27,748 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:44:27,748 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:44:27,748 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig8b_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 10:44:27,748 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:44:27,749 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:44:27,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:27,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:27,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:44:27,825 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:44:27,825 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 10:44:27,826 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 10:44:27,826 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:44:27,826 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 10:44:27,826 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:44:27,826 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 10:44:27,826 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:44:27,827 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 10:44:27,827 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 10:44:27,832 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 10:44:27,834 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 10:44:27,835 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 10:44:27,835 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 10:44:27,835 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 10:44:27,835 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 10:44:27,835 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~M~0, ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~M~0 - 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 10:44:27,836 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 10:44:27,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:27,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:27,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:44:27,872 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 10:44:27,872 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 10:44:27,876 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2018-11-28 10:44:27,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-28 10:44:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:44:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2018-11-28 10:44:27,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 10:44:27,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:27,877 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 10:44:27,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:27,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:27,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:27,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:44:27,905 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 10:44:27,905 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 10:44:27,908 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 8 states and 9 transitions. Complement of second has 3 states. [2018-11-28 10:44:27,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2018-11-28 10:44:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:44:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2018-11-28 10:44:27,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 10:44:27,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:27,909 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 10:44:27,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:44:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:27,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:44:27,922 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:44:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 10:44:27,932 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 10:44:27,932 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 10:44:27,941 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 9 states and 10 transitions. Complement of second has 4 states. [2018-11-28 10:44:27,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 10:44:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:44:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-28 10:44:27,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 10:44:27,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:27,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-28 10:44:27,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:27,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-28 10:44:27,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:44:27,944 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-11-28 10:44:27,945 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 10:44:27,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2018-11-28 10:44:27,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 10:44:27,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 10:44:27,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 10:44:27,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 10:44:27,946 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:44:27,946 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:44:27,946 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:44:27,948 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 10:44:27,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 10:44:27,948 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 10:44:27,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 10:44:27,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 10:44:27 BoogieIcfgContainer [2018-11-28 10:44:27,953 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 10:44:27,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:44:27,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:44:27,954 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:44:27,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:44:22" (3/4) ... [2018-11-28 10:44:27,958 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 10:44:27,958 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:44:27,958 INFO L168 Benchmark]: Toolchain (without parser) took 5979.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 952.2 MB in the beginning and 905.4 MB in the end (delta: 46.9 MB). Peak memory consumption was 204.2 MB. Max. memory is 11.5 GB. [2018-11-28 10:44:27,960 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:44:27,960 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.99 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-11-28 10:44:27,961 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.83 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:44:27,961 INFO L168 Benchmark]: Boogie Preprocessor took 14.39 ms. Allocated memory is still 1.0 GB. Free memory was 941.4 MB in the beginning and 938.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 10:44:27,962 INFO L168 Benchmark]: RCFGBuilder took 223.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 938.7 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 10:44:27,962 INFO L168 Benchmark]: BuchiAutomizer took 5536.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 905.4 MB in the end (delta: 233.6 MB). Peak memory consumption was 233.6 MB. Max. memory is 11.5 GB. [2018-11-28 10:44:27,963 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 1.2 GB. Free memory is still 905.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:44:27,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 164.99 ms. Allocated memory is still 1.0 GB. Free memory was 952.2 MB in the beginning and 941.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.83 ms. Allocated memory is still 1.0 GB. Free memory is still 941.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.39 ms. Allocated memory is still 1.0 GB. Free memory was 941.4 MB in the beginning and 938.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 938.7 MB in the beginning and 1.1 GB in the end (delta: -200.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5536.00 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 905.4 MB in the end (delta: 233.6 MB). Peak memory consumption was 233.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.98 ms. Allocated memory is still 1.2 GB. Free memory is still 905.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * M + x and consists of 4 locations. One deterministic module has affine ranking function -2 * x + 2 * M + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * M + -2 * x + 1 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 5.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 26 SDtfs, 23 SDslu, 3 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax196 hnf97 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf94 smp100 dnf143 smp85 tf104 neg95 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...