./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:29:02,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:29:02,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:29:02,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:29:02,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:29:02,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:29:02,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:29:02,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:29:02,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:29:02,374 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:29:02,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:29:02,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:29:02,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:29:02,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:29:02,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:29:02,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:29:02,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:29:02,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:29:02,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:29:02,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:29:02,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:29:02,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:29:02,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:29:02,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:29:02,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:29:02,413 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:29:02,413 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:29:02,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:29:02,416 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:29:02,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:29:02,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:29:02,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:29:02,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:29:02,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:29:02,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:29:02,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:29:02,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:29:02,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:29:02,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:29:02,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:29:02,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:29:02,433 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 04:29:02,460 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:29:02,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:29:02,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:29:02,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:29:02,464 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:29:02,464 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 04:29:02,465 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 04:29:02,465 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 04:29:02,465 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 04:29:02,466 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 04:29:02,467 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 04:29:02,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:29:02,468 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:29:02,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:29:02,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:29:02,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 04:29:02,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 04:29:02,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 04:29:02,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:29:02,470 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 04:29:02,470 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:29:02,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 04:29:02,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:29:02,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:29:02,471 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 04:29:02,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:29:02,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:29:02,473 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 04:29:02,474 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 04:29:02,475 INFO L138 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/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 -> 1b43ce72b37c8e17b4dbab62d6d09279867a7da3 [2019-11-20 04:29:02,672 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:29:02,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:29:02,691 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:29:02,692 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:29:02,693 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:29:02,694 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-11-20 04:29:02,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/data/0f02af294/51dc87286b694d43aa3994cf0b6c9413/FLAG94eff9bc1 [2019-11-20 04:29:03,285 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:29:03,286 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-11-20 04:29:03,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/data/0f02af294/51dc87286b694d43aa3994cf0b6c9413/FLAG94eff9bc1 [2019-11-20 04:29:03,668 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/data/0f02af294/51dc87286b694d43aa3994cf0b6c9413 [2019-11-20 04:29:03,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:29:03,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:29:03,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:29:03,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:29:03,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:29:03,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:29:03" (1/1) ... [2019-11-20 04:29:03,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3279221c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:03, skipping insertion in model container [2019-11-20 04:29:03,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:29:03" (1/1) ... [2019-11-20 04:29:03,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:29:03,712 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:29:03,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:29:03,890 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:29:03,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:29:04,020 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:29:04,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04 WrapperNode [2019-11-20 04:29:04,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:29:04,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:29:04,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:29:04,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:29:04,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:29:04,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:29:04,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:29:04,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:29:04,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... [2019-11-20 04:29:04,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:29:04,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:29:04,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:29:04,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:29:04,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 [2019-11-20 04:29:04,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:29:04,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:29:04,333 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:29:04,334 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 04:29:04,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:29:04 BoogieIcfgContainer [2019-11-20 04:29:04,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:29:04,336 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 04:29:04,336 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 04:29:04,339 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 04:29:04,340 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:29:04,341 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 04:29:03" (1/3) ... [2019-11-20 04:29:04,342 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@232aea03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:29:04, skipping insertion in model container [2019-11-20 04:29:04,342 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:29:04,342 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:29:04" (2/3) ... [2019-11-20 04:29:04,342 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@232aea03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:29:04, skipping insertion in model container [2019-11-20 04:29:04,343 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:29:04,343 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:29:04" (3/3) ... [2019-11-20 04:29:04,344 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-loops.c [2019-11-20 04:29:04,405 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 04:29:04,405 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 04:29:04,405 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 04:29:04,406 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:29:04,406 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:29:04,406 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 04:29:04,406 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:29:04,407 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 04:29:04,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 04:29:04,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:29:04,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:29:04,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:29:04,460 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:29:04,460 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:29:04,460 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 04:29:04,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 04:29:04,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:29:04,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:29:04,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:29:04,463 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:29:04,463 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:29:04,472 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 8#L18true assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 5#L19-2true [2019-11-20 04:29:04,473 INFO L796 eck$LassoCheckResult]: Loop: 5#L19-2true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 3#L21true assume !(main_~y~0 < main_~x~0); 12#L21-1true main_~x~0 := main_~x~0 - 1; 5#L19-2true [2019-11-20 04:29:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:04,480 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-20 04:29:04,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:04,491 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995218367] [2019-11-20 04:29:04,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:04,604 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:04,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:04,606 INFO L82 PathProgramCache]: Analyzing trace with hash 43246, now seen corresponding path program 1 times [2019-11-20 04:29:04,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:04,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236484659] [2019-11-20 04:29:04,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:04,624 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:04,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:04,627 INFO L82 PathProgramCache]: Analyzing trace with hash 29685291, now seen corresponding path program 1 times [2019-11-20 04:29:04,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:04,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47992588] [2019-11-20 04:29:04,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:04,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:04,651 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:04,761 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:29:04,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:29:04,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:29:04,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:29:04,763 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:29:04,763 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:04,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:29:04,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:29:04,764 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration1_Loop [2019-11-20 04:29:04,764 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:29:04,764 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:29:04,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:04,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:04,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:04,944 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:29:04,944 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 [2019-11-20 04:29:04,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:04,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:29:04,962 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:04,963 INFO L440 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/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 [2019-11-20 04:29:04,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:04,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:29:04,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:04,978 INFO L440 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/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 [2019-11-20 04:29:04,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:04,992 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:29:05,010 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,029 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:29:05,032 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:29:05,032 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:29:05,032 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:29:05,033 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:29:05,033 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:29:05,033 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,034 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:29:05,034 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:29:05,034 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration1_Loop [2019-11-20 04:29:05,034 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:29:05,034 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:29:05,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,145 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:29:05,149 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,165 INFO L120 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 [2019-11-20 04:29:05,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:05,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:05,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:05,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:05,175 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:29:05,175 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,182 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 [2019-11-20 04:29:05,202 INFO L120 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 [2019-11-20 04:29:05,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:05,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:05,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:05,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:05,214 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:29:05,216 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:29:05,227 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/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 [2019-11-20 04:29:05,245 INFO L120 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 [2019-11-20 04:29:05,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:05,248 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:29:05,248 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:05,248 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:05,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:05,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:29:05,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:29:05,257 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:29:05,263 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:29:05,264 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,276 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:29:05,276 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:29:05,277 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:29:05,277 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2019-11-20 04:29:05,284 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:05,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:29:05,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:05,356 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:29:05,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:05,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:05,397 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 04:29:05,398 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-20 04:29:05,466 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 30 states and 44 transitions. Complement of second has 7 states. [2019-11-20 04:29:05,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 04:29:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:29:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2019-11-20 04:29:05,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-20 04:29:05,473 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:05,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 04:29:05,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:05,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-20 04:29:05,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:05,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 44 transitions. [2019-11-20 04:29:05,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:05,485 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 9 states and 13 transitions. [2019-11-20 04:29:05,486 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-20 04:29:05,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 04:29:05,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-20 04:29:05,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:29:05,488 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-20 04:29:05,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-20 04:29:05,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-20 04:29:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 04:29:05,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2019-11-20 04:29:05,522 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-20 04:29:05,522 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-20 04:29:05,522 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 04:29:05,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2019-11-20 04:29:05,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:05,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:29:05,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:29:05,524 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 04:29:05,524 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 04:29:05,525 INFO L794 eck$LassoCheckResult]: Stem: 87#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 88#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 89#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 82#L21 assume main_~y~0 < main_~x~0; 83#L22-2 [2019-11-20 04:29:05,525 INFO L796 eck$LassoCheckResult]: Loop: 83#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 83#L22-2 [2019-11-20 04:29:05,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:05,525 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2019-11-20 04:29:05,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:05,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120447249] [2019-11-20 04:29:05,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:05,538 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:05,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:05,539 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2019-11-20 04:29:05,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:05,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875898749] [2019-11-20 04:29:05,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:05,547 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:05,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:05,548 INFO L82 PathProgramCache]: Analyzing trace with hash 29684850, now seen corresponding path program 1 times [2019-11-20 04:29:05,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:05,548 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887913530] [2019-11-20 04:29:05,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:05,563 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:05,637 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:29:05,637 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:29:05,637 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:29:05,637 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:29:05,637 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:29:05,638 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,638 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:29:05,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:29:05,638 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration2_Lasso [2019-11-20 04:29:05,638 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:29:05,638 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:29:05,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:05,823 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:29:05,823 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:05,843 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,849 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:05,849 INFO L440 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/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:05,872 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,879 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:05,879 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:05,897 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,902 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:05,902 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:05,924 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:05,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:05,952 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:05,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:05,959 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:05,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:05,980 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:06,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:29:06,006 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:18,088 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-20 04:29:18,097 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:29:18,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:29:18,098 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:29:18,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:29:18,098 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:29:18,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:18,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:29:18,099 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:29:18,099 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration2_Lasso [2019-11-20 04:29:18,099 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:29:18,099 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:29:18,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:18,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:18,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:18,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:18,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:18,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:18,268 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:29:18,269 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:18,282 INFO L120 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 [2019-11-20 04:29:18,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:18,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:18,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:18,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:18,295 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:29:18,295 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:29:18,305 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:18,314 INFO L120 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 [2019-11-20 04:29:18,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:18,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:18,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:18,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:18,325 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:29:18,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:29:18,341 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:29:18,362 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-20 04:29:18,362 INFO L444 ModelExtractionUtils]: 4 out of 13 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:18,368 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:29:18,372 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-11-20 04:29:18,372 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:29:18,372 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = -2*ULTIMATE.start_main_~y~0 + 2147483645 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0, -1*ULTIMATE.start_main_~x~0 + 1073741823 >= 0] [2019-11-20 04:29:18,381 INFO L297 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2019-11-20 04:29:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:18,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:29:18,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:18,492 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:29:18,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:18,493 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2019-11-20 04:29:18,494 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-20 04:29:18,583 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2019-11-20 04:29:18,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:29:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 04:29:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-11-20 04:29:18,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-20 04:29:18,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:18,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 04:29:18,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:18,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 04:29:18,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:18,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2019-11-20 04:29:18,590 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:18,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 21 transitions. [2019-11-20 04:29:18,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 04:29:18,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 04:29:18,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2019-11-20 04:29:18,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:29:18,592 INFO L688 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-11-20 04:29:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2019-11-20 04:29:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-11-20 04:29:18,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 04:29:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2019-11-20 04:29:18,603 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-20 04:29:18,604 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-20 04:29:18,604 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 04:29:18,604 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2019-11-20 04:29:18,605 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:18,606 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:29:18,606 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:29:18,607 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2019-11-20 04:29:18,607 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 04:29:18,608 INFO L794 eck$LassoCheckResult]: Stem: 169#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 170#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 171#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 172#L21 assume main_~y~0 < main_~x~0; 167#L22-2 assume !(main_~y~0 < main_~x~0); 168#L21-1 main_~x~0 := main_~x~0 - 1; 174#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 164#L21 assume main_~y~0 < main_~x~0; 165#L22-2 [2019-11-20 04:29:18,608 INFO L796 eck$LassoCheckResult]: Loop: 165#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 165#L22-2 [2019-11-20 04:29:18,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:18,608 INFO L82 PathProgramCache]: Analyzing trace with hash -421925037, now seen corresponding path program 1 times [2019-11-20 04:29:18,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:18,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483266866] [2019-11-20 04:29:18,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:18,676 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483266866] [2019-11-20 04:29:18,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:29:18,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 04:29:18,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543135078] [2019-11-20 04:29:18,685 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 04:29:18,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:18,685 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 2 times [2019-11-20 04:29:18,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:18,687 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423508134] [2019-11-20 04:29:18,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:18,705 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:18,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:29:18,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:29:18,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:29:18,729 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2019-11-20 04:29:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:29:18,754 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2019-11-20 04:29:18,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:29:18,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-11-20 04:29:18,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:18,758 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2019-11-20 04:29:18,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 04:29:18,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-20 04:29:18,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2019-11-20 04:29:18,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:29:18,759 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-20 04:29:18,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2019-11-20 04:29:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-20 04:29:18,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 04:29:18,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2019-11-20 04:29:18,761 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-20 04:29:18,764 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-11-20 04:29:18,764 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 04:29:18,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2019-11-20 04:29:18,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:18,766 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:29:18,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:29:18,768 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-20 04:29:18,768 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 04:29:18,768 INFO L794 eck$LassoCheckResult]: Stem: 201#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 202#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 203#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 198#L21 assume main_~y~0 < main_~x~0; 199#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 205#L22-2 assume !(main_~y~0 < main_~x~0); 208#L21-1 main_~x~0 := main_~x~0 - 1; 206#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 196#L21 assume main_~y~0 < main_~x~0; 197#L22-2 [2019-11-20 04:29:18,769 INFO L796 eck$LassoCheckResult]: Loop: 197#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 197#L22-2 [2019-11-20 04:29:18,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:18,770 INFO L82 PathProgramCache]: Analyzing trace with hash -193177154, now seen corresponding path program 1 times [2019-11-20 04:29:18,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:18,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595531974] [2019-11-20 04:29:18,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:18,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595531974] [2019-11-20 04:29:18,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031866906] [2019-11-20 04:29:18,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:29:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:18,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:29:18,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:18,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:29:18,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-20 04:29:18,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710955642] [2019-11-20 04:29:18,973 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 04:29:18,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:18,974 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 3 times [2019-11-20 04:29:18,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:18,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271281445] [2019-11-20 04:29:18,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:18,980 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:18,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:29:18,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 04:29:18,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:29:18,998 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 7 Second operand 8 states. [2019-11-20 04:29:19,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:29:19,171 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-11-20 04:29:19,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 04:29:19,172 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 34 transitions. [2019-11-20 04:29:19,174 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:19,174 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 14 states and 16 transitions. [2019-11-20 04:29:19,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 04:29:19,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 04:29:19,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2019-11-20 04:29:19,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:29:19,175 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-20 04:29:19,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2019-11-20 04:29:19,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 11. [2019-11-20 04:29:19,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 04:29:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2019-11-20 04:29:19,178 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-20 04:29:19,178 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 13 transitions. [2019-11-20 04:29:19,178 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 04:29:19,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 13 transitions. [2019-11-20 04:29:19,179 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:29:19,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:29:19,179 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:29:19,180 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-20 04:29:19,180 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 04:29:19,180 INFO L794 eck$LassoCheckResult]: Stem: 283#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~n~0;havoc main_~x~0;havoc main_~y~0;havoc main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~x~0 := main_~n~0; 284#L18 assume main_~x~0 >= 0 && main_~x~0 <= 1073741823; 285#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 281#L21 assume main_~y~0 < main_~x~0; 282#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 287#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 289#L22-2 assume !(main_~y~0 < main_~x~0); 288#L21-1 main_~x~0 := main_~x~0 - 1; 286#L19-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 279#L21 assume main_~y~0 < main_~x~0; 280#L22-2 [2019-11-20 04:29:19,181 INFO L796 eck$LassoCheckResult]: Loop: 280#L22-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 2 * main_~y~0; 280#L22-2 [2019-11-20 04:29:19,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:19,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1691927373, now seen corresponding path program 2 times [2019-11-20 04:29:19,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:19,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128002564] [2019-11-20 04:29:19,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:19,213 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:19,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:19,214 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 4 times [2019-11-20 04:29:19,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:19,215 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985641148] [2019-11-20 04:29:19,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:19,220 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:19,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:19,221 INFO L82 PathProgramCache]: Analyzing trace with hash -910140986, now seen corresponding path program 3 times [2019-11-20 04:29:19,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:29:19,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643325364] [2019-11-20 04:29:19,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:29:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:29:19,266 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:29:19,387 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:29:19,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:29:19,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:29:19,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:29:19,388 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:29:19,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:29:19,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:29:19,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration5_Lasso [2019-11-20 04:29:19,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:29:19,389 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:29:19,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:29:19,539 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:19,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:19,546 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:19,552 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:19,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:19,564 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,568 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:19,568 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:19,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:29:19,580 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:19,580 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:19,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:19,595 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,601 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:29:19,601 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:29:19,638 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:29:19,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:29:19,796 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:29:19,798 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:29:19,798 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:29:19,798 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:29:19,798 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:29:19,798 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:29:19,798 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,799 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:29:19,799 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:29:19,799 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-loops.c_Iteration5_Lasso [2019-11-20 04:29:19,799 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:29:19,799 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:29:19,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:29:19,948 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:29:19,948 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:19,955 INFO L120 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 [2019-11-20 04:29:19,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:19,957 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:29:19,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:19,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:19,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:19,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:29:19,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,961 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:19,971 INFO L120 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 [2019-11-20 04:29:19,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:19,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:29:19,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:19,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:19,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:19,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:29:19,974 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,977 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:19,987 INFO L120 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 [2019-11-20 04:29:19,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:19,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:29:19,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:19,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:19,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:19,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:29:19,992 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:29:19,995 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:20,001 INFO L120 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 [2019-11-20 04:29:20,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:20,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:20,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:20,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:20,006 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:29:20,006 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:29:20,009 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:20,015 INFO L120 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 [2019-11-20 04:29:20,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:29:20,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:29:20,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:29:20,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:29:20,026 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:29:20,027 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:29:20,040 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:29:20,052 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-20 04:29:20,052 INFO L444 ModelExtractionUtils]: 5 out of 13 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dce5adb2-269f-4654-ad6a-e72d47013e05/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:29:20,058 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:29:20,065 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-11-20 04:29:20,066 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:29:20,066 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2019-11-20 04:29:20,073 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-20 04:29:20,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:20,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:29:20,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:20,137 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:29:20,137 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:20,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:20,138 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-20 04:29:20,138 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-20 04:29:20,177 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 6 states. [2019-11-20 04:29:20,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:29:20,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:29:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-20 04:29:20,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-20 04:29:20,178 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:20,178 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:29:20,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:20,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:29:20,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:20,249 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:29:20,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:20,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:20,250 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-20 04:29:20,250 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-20 04:29:20,310 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 19 states and 23 transitions. Complement of second has 6 states. [2019-11-20 04:29:20,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:29:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:29:20,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-20 04:29:20,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-20 04:29:20,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:20,312 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:29:20,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:29:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:20,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:29:20,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:29:20,364 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:29:20,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:29:20,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:29:20,364 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-20 04:29:20,365 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-20 04:29:20,409 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 13 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 14 states and 16 transitions. Complement of second has 5 states. [2019-11-20 04:29:20,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:29:20,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:29:20,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 04:29:20,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-20 04:29:20,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:20,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 1 letters. [2019-11-20 04:29:20,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:20,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-20 04:29:20,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:29:20,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 16 transitions. [2019-11-20 04:29:20,413 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:29:20,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2019-11-20 04:29:20,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:29:20,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:29:20,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:29:20,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:29:20,414 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:29:20,414 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:29:20,414 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:29:20,414 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 04:29:20,415 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:29:20,415 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:29:20,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 04:29:20,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 04:29:20 BoogieIcfgContainer [2019-11-20 04:29:20,422 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 04:29:20,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:29:20,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:29:20,423 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:29:20,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:29:04" (3/4) ... [2019-11-20 04:29:20,434 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:29:20,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:29:20,437 INFO L168 Benchmark]: Toolchain (without parser) took 16761.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 208.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.7 MB). Peak memory consumption was 59.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:29:20,438 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:29:20,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:29:20,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:29:20,446 INFO L168 Benchmark]: Boogie Preprocessor took 22.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-11-20 04:29:20,447 INFO L168 Benchmark]: RCFGBuilder took 245.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:29:20,450 INFO L168 Benchmark]: BuchiAutomizer took 16086.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -7.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:29:20,454 INFO L168 Benchmark]: Witness Printer took 10.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:29:20,460 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 343.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 245.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 16086.63 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 87.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -7.5 MB). Peak memory consumption was 80.1 MB. Max. memory is 11.5 GB. * Witness Printer took 10.98 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2147483645 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.0s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 14.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 32 SDtfs, 37 SDslu, 11 SDs, 0 SdLazy, 108 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax158 hnf98 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf92 smp100 dnf100 smp100 tf102 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...