./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/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 32bit --witnessprinter.graph.data.programhash 73643ecf8e1581c13142517bcc63dc5d77c96d29 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 08:40:41,252 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 08:40:41,253 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 08:40:41,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 08:40:41,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 08:40:41,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 08:40:41,260 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 08:40:41,261 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 08:40:41,263 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 08:40:41,263 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 08:40:41,264 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 08:40:41,264 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 08:40:41,264 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 08:40:41,265 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 08:40:41,266 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 08:40:41,266 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 08:40:41,266 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 08:40:41,267 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 08:40:41,268 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 08:40:41,269 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 08:40:41,270 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 08:40:41,270 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 08:40:41,271 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 08:40:41,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 08:40:41,272 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 08:40:41,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 08:40:41,273 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 08:40:41,273 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 08:40:41,274 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 08:40:41,275 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 08:40:41,275 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 08:40:41,275 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 08:40:41,275 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 08:40:41,276 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 08:40:41,276 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 08:40:41,277 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 08:40:41,277 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-10 08:40:41,288 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 08:40:41,288 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 08:40:41,289 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 08:40:41,289 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 08:40:41,289 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 08:40:41,289 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 08:40:41,289 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 08:40:41,289 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 08:40:41,290 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 08:40:41,290 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 08:40:41,290 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 08:40:41,290 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 08:40:41,290 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 08:40:41,290 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 08:40:41,290 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 08:40:41,291 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 08:40:41,292 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 08:40:41,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 08:40:41,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 08:40:41,292 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 08:40:41,292 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 08:40:41,292 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 08:40:41,292 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 08:40:41,293 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 08:40:41,293 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_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73643ecf8e1581c13142517bcc63dc5d77c96d29 [2018-11-10 08:40:41,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 08:40:41,326 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 08:40:41,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 08:40:41,329 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 08:40:41,330 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 08:40:41,330 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/../../sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-10 08:40:41,371 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/data/9272bb9b1/410da2b63fa14217820b71dddf0d6a89/FLAG59879bd6e [2018-11-10 08:40:41,679 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 08:40:41,680 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/sv-benchmarks/c/loops/terminator_02_false-unreach-call_true-termination.i [2018-11-10 08:40:41,684 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/data/9272bb9b1/410da2b63fa14217820b71dddf0d6a89/FLAG59879bd6e [2018-11-10 08:40:41,694 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/data/9272bb9b1/410da2b63fa14217820b71dddf0d6a89 [2018-11-10 08:40:41,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 08:40:41,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 08:40:41,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 08:40:41,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 08:40:41,703 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 08:40:41,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dc2202b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41, skipping insertion in model container [2018-11-10 08:40:41,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 08:40:41,732 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 08:40:41,833 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:40:41,836 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 08:40:41,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 08:40:41,854 INFO L193 MainTranslator]: Completed translation [2018-11-10 08:40:41,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41 WrapperNode [2018-11-10 08:40:41,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 08:40:41,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 08:40:41,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 08:40:41,855 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 08:40:41,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 08:40:41,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 08:40:41,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 08:40:41,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 08:40:41,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... [2018-11-10 08:40:41,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 08:40:41,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 08:40:41,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 08:40:41,886 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 08:40:41,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:41,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 08:40:41,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 08:40:42,048 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 08:40:42,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:40:42 BoogieIcfgContainer [2018-11-10 08:40:42,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 08:40:42,049 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 08:40:42,049 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 08:40:42,051 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 08:40:42,052 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 08:40:42,052 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 08:40:41" (1/3) ... [2018-11-10 08:40:42,052 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b1d5f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 08:40:42, skipping insertion in model container [2018-11-10 08:40:42,052 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 08:40:42,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 08:40:41" (2/3) ... [2018-11-10 08:40:42,055 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b1d5f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 08:40:42, skipping insertion in model container [2018-11-10 08:40:42,055 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 08:40:42,055 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:40:42" (3/3) ... [2018-11-10 08:40:42,057 INFO L375 chiAutomizerObserver]: Analyzing ICFG terminator_02_false-unreach-call_true-termination.i [2018-11-10 08:40:42,100 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 08:40:42,101 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 08:40:42,101 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 08:40:42,101 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 08:40:42,101 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 08:40:42,101 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 08:40:42,101 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 08:40:42,101 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 08:40:42,102 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 08:40:42,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-10 08:40:42,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 08:40:42,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:40:42,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:40:42,130 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 08:40:42,130 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 08:40:42,130 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 08:40:42,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2018-11-10 08:40:42,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 08:40:42,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:40:42,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:40:42,131 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-10 08:40:42,132 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 08:40:42,138 INFO L793 eck$LassoCheckResult]: Stem: 7#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L21-2true [2018-11-10 08:40:42,138 INFO L795 eck$LassoCheckResult]: Loop: 12#L21-2true assume true; 8#L18-1true assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L21true assume !(main_~tmp~0 % 256 != 0);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 12#L21-2true [2018-11-10 08:40:42,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:42,143 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-10 08:40:42,145 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:42,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:42,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:40:42,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:42,202 INFO L82 PathProgramCache]: Analyzing trace with hash 35946, now seen corresponding path program 1 times [2018-11-10 08:40:42,202 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:42,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:42,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:40:42,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:42,224 INFO L82 PathProgramCache]: Analyzing trace with hash 28694888, now seen corresponding path program 1 times [2018-11-10 08:40:42,224 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:42,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:42,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:40:42,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,283 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:40:42,284 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:40:42,284 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:40:42,284 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:40:42,284 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 08:40:42,284 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,284 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:40:42,284 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:40:42,285 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration1_Loop [2018-11-10 08:40:42,285 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:40:42,285 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:40:42,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,418 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:40:42,419 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,430 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:42,430 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:42,435 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:40:42,435 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,452 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:42,452 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:42,454 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:40:42,454 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:42,469 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:42,478 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:40:42,478 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_~tmp~0=0, ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,493 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:42,494 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,511 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 08:40:42,511 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:42,540 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 08:40:42,541 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:40:42,541 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:40:42,541 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:40:42,541 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:40:42,541 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 08:40:42,542 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,542 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:40:42,542 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:40:42,542 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration1_Loop [2018-11-10 08:40:42,542 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:40:42,542 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:40:42,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,696 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:40:42,700 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 08:40:42,702 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 08:40:42,703 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:40:42,704 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:40:42,704 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:40:42,704 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:40:42,704 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:40:42,706 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:40:42,706 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:40:42,710 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 08:40:42,711 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 08:40:42,711 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:40:42,712 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:40:42,712 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:40:42,712 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:40:42,712 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:40:42,712 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:40:42,713 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:40:42,714 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 08:40:42,714 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 08:40:42,715 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:40:42,716 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:40:42,716 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:40:42,716 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:40:42,716 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:40:42,718 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:40:42,718 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:40:42,721 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 08:40:42,721 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 08:40:42,721 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:40:42,722 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:40:42,722 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:40:42,722 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:40:42,722 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:40:42,722 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:40:42,723 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:40:42,727 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 08:40:42,729 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 08:40:42,730 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 08:40:42,731 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 08:40:42,731 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 08:40:42,731 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 08:40:42,731 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2018-11-10 08:40:42,732 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 08:40:42,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:42,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:42,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:40:42,772 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 08:40:42,773 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 4 states. [2018-11-10 08:40:42,804 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 4 states. Result 47 states and 55 transitions. Complement of second has 7 states. [2018-11-10 08:40:42,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 08:40:42,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:40:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2018-11-10 08:40:42,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-10 08:40:42,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:42,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-10 08:40:42,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:42,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-10 08:40:42,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:42,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 55 transitions. [2018-11-10 08:40:42,811 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 08:40:42,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 12 states and 15 transitions. [2018-11-10 08:40:42,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-10 08:40:42,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-10 08:40:42,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2018-11-10 08:40:42,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 08:40:42,815 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2018-11-10 08:40:42,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2018-11-10 08:40:42,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-11-10 08:40:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-10 08:40:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-11-10 08:40:42,832 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-10 08:40:42,832 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-10 08:40:42,832 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 08:40:42,832 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-11-10 08:40:42,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 08:40:42,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:40:42,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:40:42,833 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-10 08:40:42,833 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 08:40:42,833 INFO L793 eck$LassoCheckResult]: Stem: 108#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 101#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 102#L21-2 assume true; 109#L18-1 [2018-11-10 08:40:42,833 INFO L795 eck$LassoCheckResult]: Loop: 109#L18-1 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 103#L21 assume main_~tmp~0 % 256 != 0;main_#t~post4 := main_~x~0;main_~x~0 := main_#t~post4 + 1;havoc main_#t~post4; 104#L21-2 assume true; 109#L18-1 [2018-11-10 08:40:42,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:42,834 INFO L82 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2018-11-10 08:40:42,834 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:42,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:42,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:40:42,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 1 times [2018-11-10 08:40:42,837 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:42,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:42,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:40:42,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:42,843 INFO L82 PathProgramCache]: Analyzing trace with hash 889541472, now seen corresponding path program 1 times [2018-11-10 08:40:42,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:42,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:42,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:40:42,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:42,888 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:40:42,888 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:40:42,888 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:40:42,888 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:40:42,888 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 08:40:42,888 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,889 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:40:42,889 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:40:42,889 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration2_Loop [2018-11-10 08:40:42,889 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:40:42,889 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:40:42,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:42,957 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:40:42,958 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:42,968 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:42,968 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:42,985 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:40:42,985 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~tmp~0=-64, ULTIMATE.start_main_#t~nondet3=-64} Honda state: {ULTIMATE.start_main_~tmp~0=-64, ULTIMATE.start_main_#t~nondet3=-64} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,003 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:43,003 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:43,020 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 08:40:43,020 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0=101} Honda state: {ULTIMATE.start_main_~z~0=101} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,023 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:43,024 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 08:40:43,041 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:43,069 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 08:40:43,070 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:40:43,070 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:40:43,070 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:40:43,070 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:40:43,071 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 08:40:43,071 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,071 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:40:43,071 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:40:43,071 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration2_Loop [2018-11-10 08:40:43,071 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:40:43,071 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:40:43,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,144 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:40:43,144 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 08:40:43,145 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 08:40:43,145 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:40:43,146 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:40:43,146 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:40:43,146 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:40:43,146 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:40:43,146 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:40:43,147 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:40:43,148 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 08:40:43,148 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 08:40:43,148 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:40:43,148 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:40:43,149 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:40:43,149 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:40:43,149 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:40:43,149 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:40:43,150 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:40:43,152 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 08:40:43,155 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 08:40:43,155 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 08:40:43,156 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 08:40:43,156 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 08:40:43,157 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 08:40:43,157 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-10 08:40:43,157 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 08:40:43,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:40:43,221 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 08:40:43,221 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-10 08:40:43,239 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 23 states and 28 transitions. Complement of second has 7 states. [2018-11-10 08:40:43,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 08:40:43,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:40:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-10 08:40:43,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-10 08:40:43,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 08:40:43,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,241 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-10 08:40:43,241 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 28 transitions. [2018-11-10 08:40:43,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 08:40:43,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 16 states and 20 transitions. [2018-11-10 08:40:43,242 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-10 08:40:43,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-10 08:40:43,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2018-11-10 08:40:43,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 08:40:43,243 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-10 08:40:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2018-11-10 08:40:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-10 08:40:43,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-10 08:40:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-11-10 08:40:43,244 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-10 08:40:43,244 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-10 08:40:43,244 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 08:40:43,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2018-11-10 08:40:43,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 08:40:43,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 08:40:43,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 08:40:43,245 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-10 08:40:43,246 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 08:40:43,246 INFO L793 eck$LassoCheckResult]: Stem: 183#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 177#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_~tmp~0, main_~x~0, main_~y~0, main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 178#L21-2 assume true; 187#L18-1 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 186#L21 assume !(main_~tmp~0 % 256 != 0);main_#t~post5 := main_~x~0;main_~x~0 := main_#t~post5 - 1;havoc main_#t~post5;main_#t~post6 := main_~z~0;main_~z~0 := main_#t~post6 - 1;havoc main_#t~post6; 189#L21-2 assume true; 184#L18-1 [2018-11-10 08:40:43,246 INFO L795 eck$LassoCheckResult]: Loop: 184#L18-1 assume !!(main_~x~0 < 100 && 100 < main_~z~0);main_~tmp~0 := main_#t~nondet3;havoc main_#t~nondet3; 179#L21 assume main_~tmp~0 % 256 != 0;main_#t~post4 := main_~x~0;main_~x~0 := main_#t~post4 + 1;havoc main_#t~post4; 180#L21-2 assume true; 184#L18-1 [2018-11-10 08:40:43,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:43,246 INFO L82 PathProgramCache]: Analyzing trace with hash 889541534, now seen corresponding path program 2 times [2018-11-10 08:40:43,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:43,246 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:43,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:43,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 08:40:43,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:43,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash 41794, now seen corresponding path program 2 times [2018-11-10 08:40:43,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:43,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:43,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:43,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:40:43,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:43,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:43,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:43,258 INFO L82 PathProgramCache]: Analyzing trace with hash 383635077, now seen corresponding path program 1 times [2018-11-10 08:40:43,258 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 08:40:43,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 08:40:43,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:43,259 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 08:40:43,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 08:40:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 08:40:43,282 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:40:43,282 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:40:43,282 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:40:43,282 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:40:43,282 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 08:40:43,282 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,282 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:40:43,282 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:40:43,282 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration3_Loop [2018-11-10 08:40:43,282 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:40:43,283 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:40:43,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,340 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:40:43,340 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 08:40:43,352 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8e5a8ef4-0281-4ec9-a56c-aa335c65f7e0/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,370 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 08:40:43,370 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 08:40:43,387 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 08:40:43,388 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 08:40:43,388 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 08:40:43,388 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 08:40:43,388 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 08:40:43,388 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 08:40:43,388 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 08:40:43,388 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 08:40:43,388 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 08:40:43,388 INFO L131 ssoRankerPreferences]: Filename of dumped script: terminator_02_false-unreach-call_true-termination.i_Iteration3_Loop [2018-11-10 08:40:43,388 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 08:40:43,388 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 08:40:43,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 08:40:43,456 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 08:40:43,457 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 08:40:43,457 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 08:40:43,458 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 08:40:43,458 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 08:40:43,458 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 08:40:43,458 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 08:40:43,458 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 08:40:43,458 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 08:40:43,458 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 08:40:43,462 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 08:40:43,465 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 08:40:43,465 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 08:40:43,466 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 08:40:43,466 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 08:40:43,466 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 08:40:43,466 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 199 Supporting invariants [] [2018-11-10 08:40:43,466 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 08:40:43,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:40:43,510 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 08:40:43,510 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-10 08:40:43,518 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 20 states and 26 transitions. Complement of second has 7 states. [2018-11-10 08:40:43,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 08:40:43,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:40:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-10 08:40:43,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 08:40:43,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,519 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 08:40:43,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:40:43,560 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 08:40:43,560 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-10 08:40:43,576 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 19 states and 25 transitions. Complement of second has 7 states. [2018-11-10 08:40:43,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 08:40:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:40:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-11-10 08:40:43,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 08:40:43,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,577 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 08:40:43,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 08:40:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,588 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 08:40:43,591 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 08:40:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 08:40:43,606 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 3 loop predicates [2018-11-10 08:40:43,606 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7 Second operand 4 states. [2018-11-10 08:40:43,615 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 27 states and 34 transitions. Complement of second has 6 states. [2018-11-10 08:40:43,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 08:40:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 08:40:43,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-10 08:40:43,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-10 08:40:43,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-10 08:40:43,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-10 08:40:43,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 08:40:43,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2018-11-10 08:40:43,619 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 08:40:43,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-11-10 08:40:43,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 08:40:43,619 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 08:40:43,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 08:40:43,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 08:40:43,619 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:40:43,619 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:40:43,620 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 08:40:43,620 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 08:40:43,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 08:40:43,620 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 08:40:43,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 08:40:43,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 08:40:43 BoogieIcfgContainer [2018-11-10 08:40:43,624 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 08:40:43,625 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 08:40:43,625 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 08:40:43,625 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 08:40:43,625 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 08:40:42" (3/4) ... [2018-11-10 08:40:43,628 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 08:40:43,628 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 08:40:43,628 INFO L168 Benchmark]: Toolchain (without parser) took 1930.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.3 MB in the beginning and 895.2 MB in the end (delta: 65.1 MB). Peak memory consumption was 204.1 MB. Max. memory is 11.5 GB. [2018-11-10 08:40:43,629 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:40:43,630 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.94 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:40:43,630 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.62 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:40:43,630 INFO L168 Benchmark]: Boogie Preprocessor took 10.33 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 08:40:43,631 INFO L168 Benchmark]: RCFGBuilder took 163.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2018-11-10 08:40:43,631 INFO L168 Benchmark]: BuchiAutomizer took 1575.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.2 MB in the end (delta: 234.1 MB). Peak memory consumption was 234.1 MB. Max. memory is 11.5 GB. [2018-11-10 08:40:43,632 INFO L168 Benchmark]: Witness Printer took 3.08 ms. Allocated memory is still 1.2 GB. Free memory is still 895.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 08:40:43,634 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 155.94 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.62 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.33 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 163.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -182.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1575.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.2 MB in the end (delta: 234.1 MB). Peak memory consumption was 234.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.08 ms. Allocated memory is still 1.2 GB. Free memory is still 895.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function z and consists of 5 locations. One deterministic module has affine ranking function -2 * x + 199 and consists of 4 locations. One nondeterministic module has affine ranking function -2 * x + 199 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 16 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 36 SDtfs, 35 SDslu, 28 SDs, 0 SdLazy, 38 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf100 lsp46 ukn100 mio100 lsp100 div466 bol100 ite100 ukn100 eq148 hnf46 smp83 dnf100 smp100 tf106 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 9ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...