./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_04.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD --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 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:36:07,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:36:07,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:36:07,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:36:07,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:36:07,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:36:07,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:36:07,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:36:07,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:36:07,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:36:07,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:36:07,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:36:07,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:36:07,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:36:07,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:36:07,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:36:07,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:36:07,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:36:07,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:36:07,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:36:07,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:36:07,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:36:07,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:36:07,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:36:07,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:36:07,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:36:07,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:36:07,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:36:07,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:36:07,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:36:07,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:36:07,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:36:07,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:36:07,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:36:07,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:36:07,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:36:07,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:36:07,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:36:07,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:36:07,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:36:07,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:36:07,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:36:07,436 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:36:07,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:36:07,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:36:07,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:36:07,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:36:07,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:36:07,445 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:36:07,445 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:36:07,446 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:36:07,446 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:36:07,447 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:36:07,447 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:36:07,447 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:36:07,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:36:07,448 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:36:07,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:36:07,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:36:07,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:36:07,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:36:07,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:36:07,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:36:07,449 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:36:07,449 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:36:07,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:36:07,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:36:07,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:36:07,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:36:07,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:36:07,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:36:07,453 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:36:07,454 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_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26441cee42562e2fd703b97b1a86d2baa847af9810285d31267fccda11d2ea67 [2021-10-28 23:36:07,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:36:07,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:36:07,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:36:07,787 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:36:07,788 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:36:07,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-10-28 23:36:07,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/data/6361370a5/fc875eb16d0d4c49b9045033ae097240/FLAG96d89628e [2021-10-28 23:36:08,278 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:36:08,279 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/sv-benchmarks/c/termination-restricted-15/NO_04.c [2021-10-28 23:36:08,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/data/6361370a5/fc875eb16d0d4c49b9045033ae097240/FLAG96d89628e [2021-10-28 23:36:08,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/data/6361370a5/fc875eb16d0d4c49b9045033ae097240 [2021-10-28 23:36:08,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:36:08,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:36:08,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:36:08,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:36:08,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:36:08,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:36:08" (1/1) ... [2021-10-28 23:36:08,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1afea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:08, skipping insertion in model container [2021-10-28 23:36:08,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:36:08" (1/1) ... [2021-10-28 23:36:08,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:36:08,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:36:09,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:36:09,081 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:36:09,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:36:09,169 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:36:09,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09 WrapperNode [2021-10-28 23:36:09,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:36:09,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:36:09,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:36:09,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:36:09,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:36:09,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:36:09,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:36:09,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:36:09,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:36:09,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:36:09,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:36:09,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:36:09,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (1/1) ... [2021-10-28 23:36:09,352 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:09,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:09,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:09,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:36:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:36:09,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:36:09,735 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:36:09,735 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:36:09,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:36:09 BoogieIcfgContainer [2021-10-28 23:36:09,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:36:09,738 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:36:09,738 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:36:09,741 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:36:09,741 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:36:09,742 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:36:08" (1/3) ... [2021-10-28 23:36:09,743 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54a544e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:36:09, skipping insertion in model container [2021-10-28 23:36:09,743 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:36:09,743 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:36:09" (2/3) ... [2021-10-28 23:36:09,743 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@54a544e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:36:09, skipping insertion in model container [2021-10-28 23:36:09,743 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:36:09,744 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:36:09" (3/3) ... [2021-10-28 23:36:09,745 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2021-10-28 23:36:09,816 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:36:09,816 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:36:09,816 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:36:09,816 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:36:09,816 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:36:09,817 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:36:09,817 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:36:09,817 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:36:09,831 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:09,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:36:09,872 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:36:09,872 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:36:09,878 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:36:09,878 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:36:09,879 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:36:09,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:09,881 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 23:36:09,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:36:09,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:36:09,882 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:36:09,882 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:36:09,890 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 7#L15-2true [2021-10-28 23:36:09,890 INFO L793 eck$LassoCheckResult]: Loop: 7#L15-2true assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 10#L18-2true assume !(main_~j~0 < main_~a~0); 12#L18-3true main_~i~0 := 1 + main_~i~0; 7#L15-2true [2021-10-28 23:36:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:09,896 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 23:36:09,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:09,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573972737] [2021-10-28 23:36:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:09,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:09,981 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:10,002 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:10,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:10,006 INFO L85 PathProgramCache]: Analyzing trace with hash 39990, now seen corresponding path program 1 times [2021-10-28 23:36:10,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:10,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902778283] [2021-10-28 23:36:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:10,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:10,020 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:10,027 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash 963511, now seen corresponding path program 1 times [2021-10-28 23:36:10,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:10,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264685719] [2021-10-28 23:36:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:10,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:10,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:10,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264685719] [2021-10-28 23:36:10,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264685719] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:10,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:10,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:36:10,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083197215] [2021-10-28 23:36:10,198 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:36:10,198 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:36:10,198 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:36:10,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:36:10,199 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 23:36:10,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:10,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:36:10,199 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:36:10,199 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-10-28 23:36:10,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:36:10,200 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:36:10,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:10,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:10,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:10,344 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:36:10,344 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 23:36:10,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:10,355 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:10,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 23:36:10,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:36:10,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:10,384 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:36:10,384 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: [] [2021-10-28 23:36:10,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:10,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:10,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:10,423 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:10,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:36:10,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:10,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 23:36:10,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 23:36:10,471 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: [] [2021-10-28 23:36:10,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:10,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:10,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:10,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:10,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 23:36:10,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 23:36:10,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:10,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:10,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:10,593 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:10,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 23:36:10,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 23:36:10,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 23:36:10,876 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 23:36:10,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:10,889 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 23:36:10,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 23:36:10,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 23:36:10,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 23:36:10,890 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 23:36:10,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:10,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 23:36:10,890 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 23:36:10,890 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2021-10-28 23:36:10,890 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 23:36:10,890 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 23:36:10,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:10,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:10,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 23:36:10,966 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 23:36:10,971 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 23:36:10,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:10,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:10,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:10,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 23:36:10,991 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:10,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:10,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:10,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:10,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:11,009 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:36:11,010 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:36:11,035 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:36:11,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:11,064 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:11,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:11,065 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:11,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 23:36:11,067 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:11,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:11,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:11,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:11,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:11,082 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-28 23:36:11,083 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-28 23:36:11,098 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 23:36:11,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:11,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:11,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:11,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:11,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 23:36:11,141 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 23:36:11,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 23:36:11,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 23:36:11,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 23:36:11,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 23:36:11,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 23:36:11,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 23:36:11,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 23:36:11,159 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 23:36:11,165 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-28 23:36:11,165 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-28 23:36:11,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:36:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:36:11,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:36:11,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 23:36:11,182 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 23:36:11,182 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 23:36:11,183 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 23:36:11,183 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-28 23:36:11,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:11,212 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 23:36:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:11,251 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 23:36:11,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:11,278 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 23:36:11,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:36:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:11,413 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-28 23:36:11,415 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,549 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 60 states and 102 transitions. Complement of second has 9 states. [2021-10-28 23:36:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-28 23:36:11,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2021-10-28 23:36:11,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-28 23:36:11,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:11,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-28 23:36:11,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:11,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-28 23:36:11,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 23:36:11,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 102 transitions. [2021-10-28 23:36:11,571 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:36:11,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 37 states and 54 transitions. [2021-10-28 23:36:11,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-28 23:36:11,579 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-10-28 23:36:11,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2021-10-28 23:36:11,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 23:36:11,580 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-10-28 23:36:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2021-10-28 23:36:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2021-10-28 23:36:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2021-10-28 23:36:11,611 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2021-10-28 23:36:11,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:11,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:36:11,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:36:11,621 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:11,663 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2021-10-28 23:36:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:36:11,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2021-10-28 23:36:11,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-28 23:36:11,676 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 18 states and 25 transitions. [2021-10-28 23:36:11,676 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-10-28 23:36:11,676 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-10-28 23:36:11,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2021-10-28 23:36:11,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:11,677 INFO L681 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-10-28 23:36:11,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2021-10-28 23:36:11,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2021-10-28 23:36:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-28 23:36:11,682 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-28 23:36:11,682 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-28 23:36:11,683 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 23:36:11,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2021-10-28 23:36:11,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 23:36:11,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:36:11,685 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:36:11,685 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:36:11,689 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:36:11,689 INFO L791 eck$LassoCheckResult]: Stem: 182#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 183#L15-2 [2021-10-28 23:36:11,689 INFO L793 eck$LassoCheckResult]: Loop: 183#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 186#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 187#L20-2 assume !(main_~k~0 >= 0); 189#L20-3 main_~j~0 := 1 + main_~j~0; 190#L18-2 assume !(main_~j~0 < main_~a~0); 188#L18-3 main_~i~0 := 1 + main_~i~0; 183#L15-2 [2021-10-28 23:36:11,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:11,690 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-28 23:36:11,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:11,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350393471] [2021-10-28 23:36:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:11,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:11,695 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:11,697 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1192172983, now seen corresponding path program 1 times [2021-10-28 23:36:11,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:11,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444996014] [2021-10-28 23:36:11,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:11,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:11,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:11,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:11,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:11,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444996014] [2021-10-28 23:36:11,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444996014] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:11,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:11,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:36:11,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915278907] [2021-10-28 23:36:11,761 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:36:11,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:36:11,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:36:11,764 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:11,812 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2021-10-28 23:36:11,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:36:11,812 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2021-10-28 23:36:11,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-10-28 23:36:11,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 23 transitions. [2021-10-28 23:36:11,816 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-28 23:36:11,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-28 23:36:11,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2021-10-28 23:36:11,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:11,817 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2021-10-28 23:36:11,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2021-10-28 23:36:11,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2021-10-28 23:36:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-10-28 23:36:11,820 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-28 23:36:11,820 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-10-28 23:36:11,820 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 23:36:11,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-10-28 23:36:11,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 23:36:11,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:36:11,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:36:11,822 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:36:11,822 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:11,822 INFO L791 eck$LassoCheckResult]: Stem: 219#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 220#L15-2 [2021-10-28 23:36:11,823 INFO L793 eck$LassoCheckResult]: Loop: 220#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 221#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 222#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 223#L23-2 assume !(main_~l~0 < main_~b~0); 224#L23-3 main_~k~0 := main_~k~0 - 1; 228#L20-2 assume !(main_~k~0 >= 0); 225#L20-3 main_~j~0 := 1 + main_~j~0; 226#L18-2 assume !(main_~j~0 < main_~a~0); 227#L18-3 main_~i~0 := 1 + main_~i~0; 220#L15-2 [2021-10-28 23:36:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-10-28 23:36:11,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:11,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219408755] [2021-10-28 23:36:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:11,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:11,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:11,834 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:11,841 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:11,842 INFO L85 PathProgramCache]: Analyzing trace with hash 2090456946, now seen corresponding path program 1 times [2021-10-28 23:36:11,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:11,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830372528] [2021-10-28 23:36:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:11,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:11,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:11,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:11,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830372528] [2021-10-28 23:36:11,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830372528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:11,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:11,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:36:11,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990062542] [2021-10-28 23:36:11,894 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:36:11,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:36:11,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:36:11,895 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:11,927 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2021-10-28 23:36:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:36:11,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2021-10-28 23:36:11,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:36:11,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2021-10-28 23:36:11,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-28 23:36:11,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-28 23:36:11,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2021-10-28 23:36:11,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:11,930 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-10-28 23:36:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2021-10-28 23:36:11,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-28 23:36:11,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-10-28 23:36:11,932 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-28 23:36:11,932 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-10-28 23:36:11,932 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 23:36:11,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2021-10-28 23:36:11,933 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 23:36:11,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:36:11,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:36:11,934 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:36:11,934 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:36:11,934 INFO L791 eck$LassoCheckResult]: Stem: 254#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 255#L15-2 [2021-10-28 23:36:11,934 INFO L793 eck$LassoCheckResult]: Loop: 255#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 256#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 257#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 258#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 252#L25-2 assume !(main_~m~0 >= 0); 253#L25-3 main_~l~0 := 1 + main_~l~0; 262#L23-2 assume !(main_~l~0 < main_~b~0); 263#L23-3 main_~k~0 := main_~k~0 - 1; 264#L20-2 assume !(main_~k~0 >= 0); 259#L20-3 main_~j~0 := 1 + main_~j~0; 260#L18-2 assume !(main_~j~0 < main_~a~0); 261#L18-3 main_~i~0 := 1 + main_~i~0; 255#L15-2 [2021-10-28 23:36:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2021-10-28 23:36:11,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:11,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481127668] [2021-10-28 23:36:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:11,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:11,940 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:11,943 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash -591153991, now seen corresponding path program 1 times [2021-10-28 23:36:11,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:11,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541867651] [2021-10-28 23:36:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:11,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:36:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:36:11,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:36:11,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541867651] [2021-10-28 23:36:11,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541867651] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:36:11,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:36:11,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:36:11,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348578750] [2021-10-28 23:36:11,986 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 23:36:11,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:36:11,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:36:11,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:36:11,987 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:12,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:36:12,019 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2021-10-28 23:36:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:36:12,020 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 6 transitions. [2021-10-28 23:36:12,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:36:12,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 6 transitions. [2021-10-28 23:36:12,021 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-28 23:36:12,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-28 23:36:12,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2021-10-28 23:36:12,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 23:36:12,021 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-28 23:36:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2021-10-28 23:36:12,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-28 23:36:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:36:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-28 23:36:12,022 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-28 23:36:12,022 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-28 23:36:12,023 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 23:36:12,023 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2021-10-28 23:36:12,023 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 23:36:12,023 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:36:12,023 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:36:12,024 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-10-28 23:36:12,024 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 23:36:12,024 INFO L791 eck$LassoCheckResult]: Stem: 284#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 285#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 286#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 287#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 288#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 283#L25-2 [2021-10-28 23:36:12,024 INFO L793 eck$LassoCheckResult]: Loop: 283#L25-2 assume !!(main_~m~0 >= 0);main_~m~0 := main_~m~0 - 0; 283#L25-2 [2021-10-28 23:36:12,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash 29869746, now seen corresponding path program 1 times [2021-10-28 23:36:12,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:12,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854762288] [2021-10-28 23:36:12,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:12,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:12,039 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:12,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:12,057 INFO L85 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 1 times [2021-10-28 23:36:12,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:12,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339548170] [2021-10-28 23:36:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:12,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:12,061 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:12,071 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:36:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash 925962172, now seen corresponding path program 1 times [2021-10-28 23:36:12,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:36:12,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763175822] [2021-10-28 23:36:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:36:12,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:36:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:12,093 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:36:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:36:12,101 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:36:12,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:36:12 BoogieIcfgContainer [2021-10-28 23:36:12,229 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:36:12,229 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:36:12,229 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:36:12,230 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:36:12,230 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:36:09" (3/4) ... [2021-10-28 23:36:12,233 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:36:12,268 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:36:12,268 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:36:12,270 INFO L168 Benchmark]: Toolchain (without parser) took 3546.86 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 73.4 MB in the beginning and 71.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:12,270 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 82.2 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:12,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 443.90 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 85.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:12,272 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.59 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 83.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:36:12,272 INFO L168 Benchmark]: Boogie Preprocessor took 62.74 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:12,273 INFO L168 Benchmark]: RCFGBuilder took 407.54 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 74.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:12,274 INFO L168 Benchmark]: BuchiAutomizer took 2491.08 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 74.4 MB in the beginning and 73.6 MB in the end (delta: 792.9 kB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:12,274 INFO L168 Benchmark]: Witness Printer took 38.81 ms. Allocated memory is still 136.3 MB. Free memory was 73.6 MB in the beginning and 71.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:36:12,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 82.2 MB in the end (delta: 27.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 443.90 ms. Allocated memory is still 109.1 MB. Free memory was 73.2 MB in the beginning and 85.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.59 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 83.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.74 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 407.54 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 74.4 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2491.08 ms. Allocated memory was 109.1 MB in the beginning and 136.3 MB in the end (delta: 27.3 MB). Free memory was 74.4 MB in the beginning and 73.6 MB in the end (delta: 792.9 kB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. * Witness Printer took 38.81 ms. Allocated memory is still 136.3 MB. Free memory was 73.6 MB in the beginning and 71.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. 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 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 94 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 63ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {a=2, \result=0, b=7, m=1003, l=0, i=0, k=3, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:36:12,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 23:36:12,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba88e006-0575-407f-9062-b0e0ef248578/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...