./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e334e85dd18553afecc96b27cf49a003304cbca8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 20:19:13,361 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 20:19:13,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 20:19:13,371 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 20:19:13,371 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 20:19:13,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 20:19:13,372 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 20:19:13,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 20:19:13,375 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 20:19:13,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 20:19:13,376 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 20:19:13,376 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 20:19:13,377 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 20:19:13,377 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 20:19:13,378 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 20:19:13,379 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 20:19:13,379 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 20:19:13,381 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 20:19:13,382 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 20:19:13,383 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 20:19:13,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 20:19:13,385 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 20:19:13,386 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 20:19:13,386 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 20:19:13,387 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 20:19:13,387 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 20:19:13,388 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 20:19:13,388 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 20:19:13,389 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 20:19:13,389 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 20:19:13,389 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 20:19:13,390 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 20:19:13,390 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 20:19:13,390 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 20:19:13,390 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 20:19:13,391 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 20:19:13,391 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-02 20:19:13,398 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 20:19:13,398 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 20:19:13,399 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 20:19:13,399 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 20:19:13,399 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 20:19:13,399 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-02 20:19:13,399 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-02 20:19:13,399 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-02 20:19:13,400 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 20:19:13,400 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-02 20:19:13,401 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 20:19:13,401 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-02 20:19:13,401 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 20:19:13,401 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 20:19:13,401 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-02 20:19:13,401 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 20:19:13,401 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 20:19:13,401 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-02 20:19:13,402 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-02 20:19:13,402 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_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e334e85dd18553afecc96b27cf49a003304cbca8 [2018-12-02 20:19:13,418 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 20:19:13,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 20:19:13,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 20:19:13,427 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 20:19:13,427 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 20:19:13,428 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-12-02 20:19:13,466 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/data/fd1faa98d/b67452a1628348ef8a451e472c0888c3/FLAG40d888124 [2018-12-02 20:19:13,908 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 20:19:13,908 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-12-02 20:19:13,912 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/data/fd1faa98d/b67452a1628348ef8a451e472c0888c3/FLAG40d888124 [2018-12-02 20:19:13,921 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/data/fd1faa98d/b67452a1628348ef8a451e472c0888c3 [2018-12-02 20:19:13,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 20:19:13,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 20:19:13,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 20:19:13,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 20:19:13,926 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 20:19:13,927 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:19:13" (1/1) ... [2018-12-02 20:19:13,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3033e242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:13, skipping insertion in model container [2018-12-02 20:19:13,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:19:13" (1/1) ... [2018-12-02 20:19:13,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 20:19:13,943 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 20:19:14,028 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:19:14,030 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 20:19:14,039 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 20:19:14,048 INFO L195 MainTranslator]: Completed translation [2018-12-02 20:19:14,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14 WrapperNode [2018-12-02 20:19:14,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 20:19:14,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 20:19:14,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 20:19:14,049 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 20:19:14,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 20:19:14,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 20:19:14,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 20:19:14,066 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 20:19:14,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... [2018-12-02 20:19:14,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 20:19:14,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 20:19:14,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 20:19:14,077 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 20:19:14,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 20:19:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 20:19:14,211 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 20:19:14,211 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-02 20:19:14,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:14 BoogieIcfgContainer [2018-12-02 20:19:14,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 20:19:14,212 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-02 20:19:14,212 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-02 20:19:14,214 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-02 20:19:14,215 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 20:19:14,215 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.12 08:19:13" (1/3) ... [2018-12-02 20:19:14,216 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72503508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 08:19:14, skipping insertion in model container [2018-12-02 20:19:14,216 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 20:19:14,216 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:19:14" (2/3) ... [2018-12-02 20:19:14,216 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72503508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.12 08:19:14, skipping insertion in model container [2018-12-02 20:19:14,216 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-02 20:19:14,216 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:14" (3/3) ... [2018-12-02 20:19:14,217 INFO L375 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c [2018-12-02 20:19:14,255 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 20:19:14,255 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-02 20:19:14,255 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-02 20:19:14,255 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-02 20:19:14,255 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 20:19:14,255 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 20:19:14,255 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-02 20:19:14,255 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 20:19:14,255 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-02 20:19:14,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-02 20:19:14,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 20:19:14,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 20:19:14,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 20:19:14,284 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 20:19:14,284 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 20:19:14,284 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-02 20:19:14,284 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-12-02 20:19:14,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 20:19:14,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 20:19:14,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 20:19:14,285 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 20:19:14,285 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 20:19:14,289 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2018-12-02 20:19:14,289 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2018-12-02 20:19:14,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:14,293 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-12-02 20:19:14,294 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:14,294 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:14,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:14,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:14,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-12-02 20:19:14,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:14,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:14,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:14,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:14,366 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-12-02 20:19:14,367 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:14,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:14,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:14,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,403 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:14,404 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:14,404 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:14,404 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:14,404 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 20:19:14,404 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,404 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:14,404 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:14,405 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-02 20:19:14,405 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:14,405 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:14,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,434 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,499 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:14,499 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,502 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:14,502 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:14,524 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 20:19:14,524 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,528 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:14,528 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:14,543 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 20:19:14,543 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,545 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:14,545 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,562 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 20:19:14,562 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:14,659 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 20:19:14,660 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:14,660 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:14,660 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:14,660 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:14,661 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 20:19:14,661 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,661 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:14,661 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:14,661 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-02 20:19:14,661 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:14,661 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:14,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,714 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:14,717 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 20:19:14,718 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:14,719 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:14,719 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:14,719 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:14,719 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:14,721 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 20:19:14,721 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 20:19:14,725 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 20:19:14,725 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:14,726 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:14,726 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:14,726 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:14,726 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:14,727 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 20:19:14,727 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 20:19:14,731 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 20:19:14,731 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:14,732 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:14,732 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 20:19:14,732 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:14,732 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:14,732 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:14,733 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 20:19:14,733 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 20:19:14,736 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 20:19:14,739 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-02 20:19:14,739 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 20:19:14,741 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 20:19:14,741 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 20:19:14,741 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 20:19:14,741 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2018-12-02 20:19:14,742 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 20:19:14,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:14,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:14,777 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:19:14,787 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 20:19:14,788 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-12-02 20:19:14,816 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-12-02 20:19:14,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 20:19:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 20:19:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-12-02 20:19:14,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-12-02 20:19:14,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:14,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 20:19:14,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:14,820 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-02 20:19:14,820 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:14,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-12-02 20:19:14,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 20:19:14,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-12-02 20:19:14,826 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-02 20:19:14,826 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-12-02 20:19:14,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-12-02 20:19:14,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 20:19:14,827 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 20:19:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-12-02 20:19:14,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-12-02 20:19:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-12-02 20:19:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-12-02 20:19:14,850 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 20:19:14,850 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-12-02 20:19:14,850 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-02 20:19:14,850 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-12-02 20:19:14,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 20:19:14,851 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 20:19:14,851 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 20:19:14,851 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-12-02 20:19:14,851 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 20:19:14,851 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2018-12-02 20:19:14,851 INFO L796 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2018-12-02 20:19:14,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:14,851 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-12-02 20:19:14,852 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:14,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:14,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:14,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:19:14,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 20:19:14,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 20:19:14,879 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 20:19:14,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:14,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-12-02 20:19:14,880 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:14,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:14,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:14,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:14,894 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:14,894 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:14,894 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:14,894 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:14,894 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 20:19:14,894 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,894 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:14,894 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:14,894 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-02 20:19:14,894 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:14,894 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:14,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:14,953 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:14,953 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,955 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:14,955 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:14,970 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 20:19:14,970 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,972 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:14,972 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:14,988 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 20:19:14,988 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:15,093 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 20:19:15,094 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:15,094 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:15,094 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:15,094 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:15,094 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 20:19:15,094 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,094 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:15,094 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:15,094 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-02 20:19:15,094 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:15,095 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:15,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,151 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:15,151 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 20:19:15,151 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:15,152 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:15,152 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:15,152 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:15,152 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:15,153 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 20:19:15,153 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 20:19:15,156 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 20:19:15,156 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:15,156 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:15,156 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 20:19:15,157 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:15,157 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:15,157 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:15,157 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 20:19:15,157 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 20:19:15,159 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 20:19:15,162 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-02 20:19:15,162 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 20:19:15,163 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 20:19:15,163 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 20:19:15,163 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 20:19:15,163 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] [2018-12-02 20:19:15,163 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 20:19:15,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,180 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:19:15,181 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 20:19:15,181 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-02 20:19:15,187 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2018-12-02 20:19:15,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 20:19:15,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 20:19:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-02 20:19:15,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-12-02 20:19:15,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-12-02 20:19:15,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-12-02 20:19:15,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2018-12-02 20:19:15,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 20:19:15,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2018-12-02 20:19:15,191 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-12-02 20:19:15,191 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 20:19:15,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2018-12-02 20:19:15,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 20:19:15,191 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-02 20:19:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2018-12-02 20:19:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-02 20:19:15,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 20:19:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-12-02 20:19:15,193 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-12-02 20:19:15,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-02 20:19:15,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-02 20:19:15,197 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2018-12-02 20:19:15,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:19:15,205 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2018-12-02 20:19:15,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-02 20:19:15,206 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2018-12-02 20:19:15,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 20:19:15,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2018-12-02 20:19:15,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-12-02 20:19:15,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 20:19:15,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-12-02 20:19:15,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 20:19:15,208 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-12-02 20:19:15,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-12-02 20:19:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2018-12-02 20:19:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 20:19:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-12-02 20:19:15,209 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-02 20:19:15,210 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-12-02 20:19:15,210 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-02 20:19:15,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-12-02 20:19:15,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-02 20:19:15,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 20:19:15,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 20:19:15,211 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2018-12-02 20:19:15,211 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-02 20:19:15,211 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2018-12-02 20:19:15,211 INFO L796 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2018-12-02 20:19:15,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,211 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2018-12-02 20:19:15,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:15,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:15,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,213 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 20:19:15,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 20:19:15,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 20:19:15,237 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 20:19:15,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,250 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-02 20:19:15,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-02 20:19:15,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-12-02 20:19:15,280 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-02 20:19:15,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2018-12-02 20:19:15,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:15,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:15,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:15,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,295 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:15,295 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:15,295 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:15,295 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:15,295 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 20:19:15,295 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,295 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:15,296 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:15,296 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-02 20:19:15,296 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:15,296 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:15,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,336 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:15,336 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,338 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:15,338 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:15,361 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 20:19:15,362 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,364 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:15,364 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,382 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 20:19:15,382 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:15,474 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 20:19:15,475 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:15,476 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:15,476 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:15,476 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:15,476 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 20:19:15,476 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,476 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:15,476 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:15,476 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-02 20:19:15,476 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:15,476 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:15,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,514 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:15,514 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 20:19:15,514 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:15,515 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:15,515 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:15,515 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:15,515 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:15,516 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-02 20:19:15,516 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-02 20:19:15,520 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 20:19:15,520 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:15,520 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:15,520 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 20:19:15,520 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:15,521 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:15,521 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:15,521 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 20:19:15,521 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 20:19:15,524 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 20:19:15,527 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-12-02 20:19:15,527 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 20:19:15,527 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 20:19:15,527 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 20:19:15,527 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 20:19:15,527 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] [2018-12-02 20:19:15,528 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 20:19:15,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:19:15,545 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 20:19:15,545 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-02 20:19:15,550 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2018-12-02 20:19:15,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 20:19:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 20:19:15,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-02 20:19:15,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-02 20:19:15,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,551 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 20:19:15,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,570 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:19:15,574 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-02 20:19:15,574 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-02 20:19:15,580 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2018-12-02 20:19:15,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 20:19:15,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 20:19:15,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-02 20:19:15,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-02 20:19:15,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,581 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-02 20:19:15,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:19:15,595 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 1 loop predicates [2018-12-02 20:19:15,595 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-12-02 20:19:15,600 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2018-12-02 20:19:15,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-02 20:19:15,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-02 20:19:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-12-02 20:19:15,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-12-02 20:19:15,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2018-12-02 20:19:15,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2018-12-02 20:19:15,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2018-12-02 20:19:15,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-02 20:19:15,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2018-12-02 20:19:15,603 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-02 20:19:15,603 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-12-02 20:19:15,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2018-12-02 20:19:15,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 20:19:15,604 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2018-12-02 20:19:15,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2018-12-02 20:19:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2018-12-02 20:19:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-02 20:19:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-12-02 20:19:15,605 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-12-02 20:19:15,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 20:19:15,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-02 20:19:15,605 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 5 states. [2018-12-02 20:19:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 20:19:15,611 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-12-02 20:19:15,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 20:19:15,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2018-12-02 20:19:15,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-12-02 20:19:15,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2018-12-02 20:19:15,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-02 20:19:15,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-02 20:19:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2018-12-02 20:19:15,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-02 20:19:15,613 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-12-02 20:19:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2018-12-02 20:19:15,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2018-12-02 20:19:15,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-12-02 20:19:15,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2018-12-02 20:19:15,614 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-02 20:19:15,614 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2018-12-02 20:19:15,614 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-02 20:19:15,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2018-12-02 20:19:15,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-02 20:19:15,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-02 20:19:15,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-02 20:19:15,615 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-12-02 20:19:15,615 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-12-02 20:19:15,615 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2018-12-02 20:19:15,615 INFO L796 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2018-12-02 20:19:15,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,615 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-12-02 20:19:15,615 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:15,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:15,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 20:19:15,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2018-12-02 20:19:15,621 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:15,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:15,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,621 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-02 20:19:15,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,626 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2018-12-02 20:19:15,626 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 20:19:15,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 20:19:15,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 20:19:15,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 20:19:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 20:19:15,661 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:15,661 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:15,662 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:15,662 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:15,662 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-02 20:19:15,662 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,662 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:15,662 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:15,662 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-02 20:19:15,662 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:15,662 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:15,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,705 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:15,705 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,707 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:15,707 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:15,710 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 20:19:15,710 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,724 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:15,724 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:15,739 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-02 20:19:15,739 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,741 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-02 20:19:15,741 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b83ae170-a6dc-400b-b25d-9c51410ea9f9/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,763 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-02 20:19:15,763 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-02 20:19:15,806 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-02 20:19:15,807 INFO L216 LassoAnalysis]: Preferences: [2018-12-02 20:19:15,807 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-02 20:19:15,807 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-02 20:19:15,807 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-02 20:19:15,807 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-02 20:19:15,807 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-02 20:19:15,807 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-02 20:19:15,807 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-02 20:19:15,807 INFO L131 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-02 20:19:15,807 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-02 20:19:15,808 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-02 20:19:15,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-02 20:19:15,843 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-02 20:19:15,843 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-02 20:19:15,844 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:15,844 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:15,844 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 20:19:15,844 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:15,845 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:15,845 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:15,845 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 20:19:15,845 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 20:19:15,847 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-02 20:19:15,848 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-02 20:19:15,848 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-02 20:19:15,848 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-02 20:19:15,848 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-02 20:19:15,848 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-02 20:19:15,848 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-02 20:19:15,849 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-02 20:19:15,849 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-02 20:19:15,851 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-02 20:19:15,853 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-02 20:19:15,853 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-02 20:19:15,853 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-02 20:19:15,853 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-02 20:19:15,853 INFO L518 LassoAnalysis]: Proved termination. [2018-12-02 20:19:15,853 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] [2018-12-02 20:19:15,854 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-02 20:19:15,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 20:19:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 20:19:15,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 20:19:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 20:19:15,882 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-12-02 20:19:15,882 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2018-12-02 20:19:15,891 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2018-12-02 20:19:15,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-02 20:19:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-02 20:19:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-12-02 20:19:15,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2018-12-02 20:19:15,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-12-02 20:19:15,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2018-12-02 20:19:15,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-02 20:19:15,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2018-12-02 20:19:15,893 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 20:19:15,893 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2018-12-02 20:19:15,893 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-02 20:19:15,893 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-02 20:19:15,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-02 20:19:15,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-02 20:19:15,893 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 20:19:15,893 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 20:19:15,893 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 20:19:15,893 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-02 20:19:15,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-02 20:19:15,893 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-02 20:19:15,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-02 20:19:15,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.12 08:19:15 BoogieIcfgContainer [2018-12-02 20:19:15,897 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-02 20:19:15,897 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 20:19:15,897 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 20:19:15,898 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 20:19:15,898 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:19:14" (3/4) ... [2018-12-02 20:19:15,900 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 20:19:15,900 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 20:19:15,900 INFO L168 Benchmark]: Toolchain (without parser) took 1977.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -107.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:19:15,901 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:19:15,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 124.72 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-02 20:19:15,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.14 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:19:15,902 INFO L168 Benchmark]: Boogie Preprocessor took 9.90 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-02 20:19:15,902 INFO L168 Benchmark]: RCFGBuilder took 135.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-02 20:19:15,903 INFO L168 Benchmark]: BuchiAutomizer took 1685.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2018-12-02 20:19:15,903 INFO L168 Benchmark]: Witness Printer took 2.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 20:19:15,904 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 124.72 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 942.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 17.14 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.90 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 135.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -147.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1685.18 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.47 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 1.3s. 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 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 34 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...