./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/LogAG.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/LogAG.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 81a46fe8790e1f522cb67a9c253c8a7e6828f982 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:10:48,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:10:48,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:10:48,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:10:48,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:10:48,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:10:48,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:10:48,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:10:48,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:10:48,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:10:48,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:10:48,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:10:48,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:10:48,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:10:48,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:10:48,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:10:48,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:10:48,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:10:48,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:10:48,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:10:48,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:10:48,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:10:48,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:10:48,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:10:48,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:10:48,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:10:48,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:10:48,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:10:48,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:10:48,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:10:48,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:10:48,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:10:48,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:10:48,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:10:48,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:10:48,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:10:48,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:10:48,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:10:48,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:10:48,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:10:48,358 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:10:48,359 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:10:48,389 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:10:48,389 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:10:48,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:10:48,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:10:48,392 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:10:48,392 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:10:48,392 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:10:48,393 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:10:48,393 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:10:48,393 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:10:48,394 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:10:48,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:10:48,394 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:10:48,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:10:48,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:10:48,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:10:48,396 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:10:48,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:10:48,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:10:48,396 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:10:48,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:10:48,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:10:48,397 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:10:48,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:10:48,398 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:10:48,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:10:48,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:10:48,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:10:48,400 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:10:48,401 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:10:48,401 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81a46fe8790e1f522cb67a9c253c8a7e6828f982 [2020-11-29 19:10:48,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:10:48,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:10:48,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:10:48,808 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:10:48,809 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:10:48,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/LogAG.c [2020-11-29 19:10:48,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/data/0db7efd0c/25796cc39a7245a89b0e792c3b1b8e3a/FLAG9a0398781 [2020-11-29 19:10:49,418 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:10:49,419 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/sv-benchmarks/c/termination-restricted-15/LogAG.c [2020-11-29 19:10:49,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/data/0db7efd0c/25796cc39a7245a89b0e792c3b1b8e3a/FLAG9a0398781 [2020-11-29 19:10:49,787 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/data/0db7efd0c/25796cc39a7245a89b0e792c3b1b8e3a [2020-11-29 19:10:49,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:10:49,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:10:49,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:10:49,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:10:49,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:10:49,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:49" (1/1) ... [2020-11-29 19:10:49,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b8a132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:49, skipping insertion in model container [2020-11-29 19:10:49,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:49" (1/1) ... [2020-11-29 19:10:49,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:10:49,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:10:49,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:10:49,985 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:10:50,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:10:50,017 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:10:50,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50 WrapperNode [2020-11-29 19:10:50,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:10:50,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:10:50,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:10:50,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:10:50,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,035 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:10:50,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:10:50,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:10:50,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:10:50,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... [2020-11-29 19:10:50,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:10:50,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:10:50,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:10:50,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:10:50,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:50,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:10:50,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:10:50,363 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:10:50,364 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 19:10:50,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:50 BoogieIcfgContainer [2020-11-29 19:10:50,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:10:50,368 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:10:50,368 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:10:50,375 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:10:50,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:10:50,377 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:10:49" (1/3) ... [2020-11-29 19:10:50,378 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ec5a393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:10:50, skipping insertion in model container [2020-11-29 19:10:50,379 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:10:50,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:50" (2/3) ... [2020-11-29 19:10:50,380 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ec5a393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:10:50, skipping insertion in model container [2020-11-29 19:10:50,380 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:10:50,380 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:50" (3/3) ... [2020-11-29 19:10:50,382 INFO L373 chiAutomizerObserver]: Analyzing ICFG LogAG.c [2020-11-29 19:10:50,467 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:10:50,467 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:10:50,467 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:10:50,468 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:10:50,468 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:10:50,468 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:10:50,468 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:10:50,469 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:10:50,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:10:50,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:10:50,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:10:50,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:10:50,513 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:10:50,513 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:10:50,514 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:10:50,514 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:10:50,516 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 19:10:50,516 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:10:50,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:10:50,516 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 19:10:50,517 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 19:10:50,525 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 6#L13-2true [2020-11-29 19:10:50,526 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0 - 2;main_~restmp~0 := 0; 3#L17-2true assume !(main_~xtmp~0 > 1); 10#L17-3true main_~x~0 := 1 + main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 6#L13-2true [2020-11-29 19:10:50,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:50,534 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 19:10:50,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:50,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271903342] [2020-11-29 19:10:50,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:50,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:50,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:50,679 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:50,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:50,685 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2020-11-29 19:10:50,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:50,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252915159] [2020-11-29 19:10:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:50,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:50,733 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:50,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:50,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:50,738 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2020-11-29 19:10:50,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:50,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633154969] [2020-11-29 19:10:50,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:50,749 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:50,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:50,763 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:50,903 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:10:50,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:10:50,906 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:10:50,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:10:50,906 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:10:50,906 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:50,909 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:10:50,917 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:10:50,917 INFO L133 ssoRankerPreferences]: Filename of dumped script: LogAG.c_Iteration1_Loop [2020-11-29 19:10:50,917 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:10:50,918 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:10:50,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:50,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,247 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:10:51,247 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:51,264 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:51,264 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:10:51,276 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:10:51,276 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_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:51,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:51,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:10:51,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:10:51,311 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_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:51,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:51,347 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:51,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:10:51,411 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 [2020-11-29 19:10:51,916 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:10:51,919 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:10:51,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:10:51,919 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:10:51,919 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:10:51,919 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:10:51,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:51,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:10:51,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:10:51,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: LogAG.c_Iteration1_Loop [2020-11-29 19:10:51,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:10:51,920 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:10:51,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:51,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:52,141 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:10:52,148 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:52,156 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 [2020-11-29 19:10:52,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:52,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:52,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:52,160 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:52,168 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:10:52,168 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 [2020-11-29 19:10:52,175 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:52,204 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 [2020-11-29 19:10:52,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:52,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:10:52,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:52,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:52,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:52,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:10:52,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:10:52,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:52,245 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 [2020-11-29 19:10:52,247 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:52,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:52,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:52,248 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:52,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:10:52,253 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:10:52,263 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:52,302 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 [2020-11-29 19:10:52,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:52,303 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:10:52,304 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:52,304 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:52,304 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:52,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:10:52,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:10:52,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:52,356 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 [2020-11-29 19:10:52,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:52,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:10:52,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:52,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:52,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:52,360 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:10:52,361 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:10:52,383 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:10:52,402 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 19:10:52,402 INFO L444 ModelExtractionUtils]: 2 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_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:52,418 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:10:52,418 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:10:52,418 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:10:52,419 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:52,448 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:10:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:52,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:10:52,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:52,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:10:52,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:52,630 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 [2020-11-29 19:10:52,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 19:10:52,711 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2020-11-29 19:10:52,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:10:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:10:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2020-11-29 19:10:52,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 19:10:52,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:52,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 19:10:52,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:52,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 19:10:52,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:52,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2020-11-29 19:10:52,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:10:52,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2020-11-29 19:10:52,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 19:10:52,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 19:10:52,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2020-11-29 19:10:52,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:10:52,739 INFO L691 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 19:10:52,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2020-11-29 19:10:52,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2020-11-29 19:10:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 19:10:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2020-11-29 19:10:52,771 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 19:10:52,771 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2020-11-29 19:10:52,771 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:10:52,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2020-11-29 19:10:52,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:10:52,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:10:52,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:10:52,773 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:10:52,773 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:10:52,774 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 75#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0 - 2;main_~restmp~0 := 0; 71#L17-2 [2020-11-29 19:10:52,774 INFO L796 eck$LassoCheckResult]: Loop: 71#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 71#L17-2 [2020-11-29 19:10:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 19:10:52,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:52,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055265517] [2020-11-29 19:10:52,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:52,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:52,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:52,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:52,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:52,811 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:52,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:52,812 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2020-11-29 19:10:52,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:52,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240966970] [2020-11-29 19:10:52,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:52,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:52,832 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:52,843 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:52,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:52,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:52,846 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2020-11-29 19:10:52,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:52,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104843691] [2020-11-29 19:10:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:52,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:52,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:52,875 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:52,895 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:10:52,896 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:10:52,896 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:10:52,896 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:10:52,896 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:10:52,896 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:52,896 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:10:52,896 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:10:52,897 INFO L133 ssoRankerPreferences]: Filename of dumped script: LogAG.c_Iteration2_Loop [2020-11-29 19:10:52,897 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:10:52,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:10:52,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:52,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:52,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:52,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:52,999 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:10:52,999 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:53,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:53,010 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 [2020-11-29 19:10:53,016 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:10:53,016 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_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:53,049 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:10:53,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:10:53,118 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:10:53,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=0} Honda state: {ULTIMATE.start_main_~restmp~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~restmp~0=-3}, {ULTIMATE.start_main_~restmp~0=-1}, {ULTIMATE.start_main_~restmp~0=5}] Lambdas: [1, 6, 1] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:53,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:53,171 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 [2020-11-29 19:10:53,177 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:10:53,178 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_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:53,231 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:53,231 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:53,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:10:53,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:10:53,321 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:10:53,323 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:10:53,323 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:10:53,323 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:10:53,323 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:10:53,323 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:10:53,323 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,323 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:10:53,323 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:10:53,323 INFO L133 ssoRankerPreferences]: Filename of dumped script: LogAG.c_Iteration2_Loop [2020-11-29 19:10:53,323 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:10:53,324 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:10:53,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:53,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:53,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:53,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:53,460 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:10:53,460 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:53,469 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 [2020-11-29 19:10:53,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:53,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:53,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:53,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:53,480 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:10:53,480 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,485 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:53,538 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 [2020-11-29 19:10:53,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:53,541 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:10:53,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:53,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:53,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:53,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:10:53,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,548 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:10:53,600 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 [2020-11-29 19:10:53,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:53,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:53,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:53,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:53,615 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:10:53,615 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,623 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:53,692 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 [2020-11-29 19:10:53,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:53,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:10:53,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:53,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:53,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:53,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:10:53,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,700 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:10:53,703 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 19:10:53,703 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:53,742 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:10:53,742 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:10:53,742 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:10:53,742 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2020-11-29 19:10:53,771 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:10:53,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:53,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:10:53,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:53,823 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:10:53,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:53,824 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:10:53,824 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2020-11-29 19:10:53,850 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2020-11-29 19:10:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:10:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:10:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 19:10:53,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-29 19:10:53,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:53,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-29 19:10:53,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:53,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 19:10:53,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:53,854 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2020-11-29 19:10:53,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:10:53,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2020-11-29 19:10:53,856 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2020-11-29 19:10:53,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2020-11-29 19:10:53,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2020-11-29 19:10:53,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:10:53,857 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2020-11-29 19:10:53,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2020-11-29 19:10:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2020-11-29 19:10:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 19:10:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2020-11-29 19:10:53,859 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 19:10:53,859 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-29 19:10:53,859 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:10:53,859 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2020-11-29 19:10:53,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 19:10:53,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:10:53,860 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:10:53,860 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-29 19:10:53,860 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 19:10:53,861 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 123#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0 - 2;main_~restmp~0 := 0; 120#L17-2 assume !(main_~xtmp~0 > 1); 121#L17-3 main_~x~0 := 1 + main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 124#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0 - 2;main_~restmp~0 := 0; 119#L17-2 [2020-11-29 19:10:53,861 INFO L796 eck$LassoCheckResult]: Loop: 119#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 119#L17-2 [2020-11-29 19:10:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:53,865 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2020-11-29 19:10:53,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:53,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976017223] [2020-11-29 19:10:53,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:53,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:53,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:53,901 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:53,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:53,902 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2020-11-29 19:10:53,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:53,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711395487] [2020-11-29 19:10:53,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:53,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:53,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:53,930 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:53,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:53,933 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2020-11-29 19:10:53,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:53,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572573185] [2020-11-29 19:10:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:54,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572573185] [2020-11-29 19:10:54,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:54,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:10:54,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076531661] [2020-11-29 19:10:54,049 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:10:54,050 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:10:54,050 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:10:54,050 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:10:54,050 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:10:54,050 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:54,050 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:10:54,050 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:10:54,050 INFO L133 ssoRankerPreferences]: Filename of dumped script: LogAG.c_Iteration3_Loop [2020-11-29 19:10:54,050 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:10:54,050 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:10:54,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,148 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:10:54,149 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:54,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:54,155 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:54,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:10:54,160 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:54,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:54,206 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 [2020-11-29 19:10:54,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:10:54,211 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_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:54,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:10:54,257 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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 [2020-11-29 19:10:54,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:10:54,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:10:54,344 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:10:54,345 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:10:54,345 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:10:54,345 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:10:54,345 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:10:54,345 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:10:54,346 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:54,346 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:10:54,346 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:10:54,346 INFO L133 ssoRankerPreferences]: Filename of dumped script: LogAG.c_Iteration3_Loop [2020-11-29 19:10:54,346 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:10:54,346 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:10:54,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:10:54,504 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:10:54,504 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:54,519 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 [2020-11-29 19:10:54,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:54,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:54,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:54,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:54,526 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:10:54,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:54,532 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:54,564 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 [2020-11-29 19:10:54,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:10:54,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:10:54,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:10:54,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:10:54,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:10:54,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:10:54,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:10:54,570 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:10:54,579 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:10:54,579 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b013a99e-4942-4dca-93eb-2c2f9613bbec/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) [2020-11-29 19:10:54,583 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:10:54,583 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:10:54,583 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:10:54,583 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:10:54,627 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:10:54,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:54,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:10:54,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:54,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:54,673 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:10:54,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:54,674 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:10:54,674 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 19:10:54,691 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-11-29 19:10:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:10:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:10:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 19:10:54,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 19:10:54,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:54,693 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:10:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:54,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:10:54,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:54,738 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:10:54,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:54,739 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:10:54,740 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 19:10:54,751 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2020-11-29 19:10:54,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:10:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:10:54,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 19:10:54,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 19:10:54,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:54,752 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:10:54,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:54,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:54,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:10:54,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:54,790 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:10:54,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:54,791 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:10:54,791 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-29 19:10:54,810 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2020-11-29 19:10:54,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:10:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 19:10:54,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-29 19:10:54,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 19:10:54,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:54,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2020-11-29 19:10:54,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:54,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2020-11-29 19:10:54,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:10:54,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2020-11-29 19:10:54,814 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:10:54,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2020-11-29 19:10:54,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:10:54,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:10:54,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:10:54,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:10:54,815 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:10:54,815 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:10:54,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:54,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:10:54,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:10:54,820 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-11-29 19:10:54,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:54,823 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 19:10:54,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:10:54,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 19:10:54,824 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:10:54,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 19:10:54,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:10:54,824 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:10:54,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:10:54,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:10:54,825 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:10:54,825 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:10:54,825 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:10:54,825 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:10:54,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:10:54,826 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:10:54,826 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:10:54,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:10:54 BoogieIcfgContainer [2020-11-29 19:10:54,832 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:10:54,833 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:10:54,833 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:10:54,833 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:10:54,834 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:50" (3/4) ... [2020-11-29 19:10:54,837 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:10:54,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:10:54,840 INFO L168 Benchmark]: Toolchain (without parser) took 5047.14 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 73.7 MB in the beginning and 63.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:54,840 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:10:54,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.36 ms. Allocated memory is still 94.4 MB. Free memory was 73.5 MB in the beginning and 65.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:54,842 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.49 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:54,843 INFO L168 Benchmark]: Boogie Preprocessor took 24.04 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 62.8 MB in the end (delta: 719.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:10:54,843 INFO L168 Benchmark]: RCFGBuilder took 286.57 ms. Allocated memory is still 94.4 MB. Free memory was 62.6 MB in the beginning and 54.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:54,844 INFO L168 Benchmark]: BuchiAutomizer took 4464.33 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.5 MB in the beginning and 63.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:54,845 INFO L168 Benchmark]: Witness Printer took 4.70 ms. Allocated memory is still 113.2 MB. Free memory is still 63.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:10:54,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory is still 58.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.36 ms. Allocated memory is still 94.4 MB. Free memory was 73.5 MB in the beginning and 65.0 MB in the end (delta: 8.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.49 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 63.5 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.04 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 62.8 MB in the end (delta: 719.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 286.57 ms. Allocated memory is still 94.4 MB. Free memory was 62.6 MB in the beginning and 54.5 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4464.33 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 54.5 MB in the beginning and 63.0 MB in the end (delta: -8.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.70 ms. Allocated memory is still 113.2 MB. Free memory is still 63.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 19 SDtfs, 23 SDslu, 6 SDs, 0 SdLazy, 35 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf93 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...