./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Stockholm-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Stockholm-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF --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 0690e5781abea147059c8c3687dc0be9b462edcdf26c7ee50864c7e6884a231b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:02:35,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:02:35,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:02:35,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:02:35,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:02:35,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:02:35,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:02:35,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:02:35,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:02:35,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:02:35,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:02:35,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:02:35,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:02:35,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:02:35,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:02:35,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:02:35,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:02:35,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:02:35,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:02:35,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:02:35,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:02:35,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:02:35,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:02:35,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:02:35,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:02:35,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:02:35,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:02:35,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:02:35,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:02:35,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:02:35,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:02:35,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:02:35,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:02:35,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:02:35,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:02:35,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:02:35,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:02:35,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:02:35,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:02:35,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:02:35,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:02:35,910 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 06:02:35,957 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:02:35,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:02:35,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:02:35,957 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:02:35,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:02:35,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:02:35,959 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:02:35,959 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:02:35,959 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:02:35,959 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:02:35,959 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:02:35,959 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:02:35,960 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:02:35,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:02:35,960 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:02:35,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:02:35,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:02:35,961 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:02:35,961 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:02:35,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:02:35,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:02:35,961 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:02:35,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:02:35,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:02:35,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:02:35,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:02:35,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:02:35,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:02:35,962 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:02:35,963 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:02:35,963 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_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0690e5781abea147059c8c3687dc0be9b462edcdf26c7ee50864c7e6884a231b [2021-11-20 06:02:36,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:02:36,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:02:36,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:02:36,232 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:02:36,234 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:02:36,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted/Stockholm-1.c [2021-11-20 06:02:36,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/data/25f4581ba/dc39aa28e52c4617b6bde08343e07037/FLAGbc69f7fd7 [2021-11-20 06:02:36,762 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:02:36,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/sv-benchmarks/c/termination-crafted/Stockholm-1.c [2021-11-20 06:02:36,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/data/25f4581ba/dc39aa28e52c4617b6bde08343e07037/FLAGbc69f7fd7 [2021-11-20 06:02:37,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/data/25f4581ba/dc39aa28e52c4617b6bde08343e07037 [2021-11-20 06:02:37,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:02:37,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:02:37,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:37,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:02:37,155 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:02:37,156 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6360b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37, skipping insertion in model container [2021-11-20 06:02:37,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:02:37,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:02:37,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:37,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:02:37,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:02:37,389 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:02:37,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37 WrapperNode [2021-11-20 06:02:37,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:02:37,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:02:37,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:02:37,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:02:37,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,414 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2021-11-20 06:02:37,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:02:37,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:02:37,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:02:37,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:02:37,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:02:37,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:02:37,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:02:37,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:02:37,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (1/1) ... [2021-11-20 06:02:37,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:37,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:37,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:37,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:02:37,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:02:37,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:02:37,600 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:02:37,602 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:02:37,709 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:02:37,717 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:02:37,717 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:02:37,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:37 BoogieIcfgContainer [2021-11-20 06:02:37,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:02:37,720 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:02:37,721 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:02:37,724 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:02:37,725 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:02:37,725 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:02:37" (1/3) ... [2021-11-20 06:02:37,726 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ca06d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:02:37, skipping insertion in model container [2021-11-20 06:02:37,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:02:37,727 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:02:37" (2/3) ... [2021-11-20 06:02:37,727 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1ca06d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:02:37, skipping insertion in model container [2021-11-20 06:02:37,727 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:02:37,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:37" (3/3) ... [2021-11-20 06:02:37,729 INFO L388 chiAutomizerObserver]: Analyzing ICFG Stockholm-1.c [2021-11-20 06:02:37,805 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:02:37,805 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:02:37,805 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:02:37,805 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:02:37,805 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:02:37,806 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:02:37,806 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:02:37,806 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:02:37,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2021-11-20 06:02:37,837 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:02:37,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:02:37,837 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:02:37,843 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:02:37,843 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 06:02:37,843 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:02:37,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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) [2021-11-20 06:02:37,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 06:02:37,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:02:37,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:02:37,846 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-11-20 06:02:37,846 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 06:02:37,853 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~a~0#1, main_~b~0#1;havoc main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 4#L22true assume !!(-268435455 <= main_~x~0#1 && main_~x~0#1 <= 268435455); 9#L23true assume !!(-268435455 <= main_~a~0#1 && main_~a~0#1 <= 268435455); 12#L24true assume !!(-268435455 <= main_~b~0#1 && main_~b~0#1 <= 268435455); 8#L25true assume main_~a~0#1 == main_~b~0#1; 7#L26-2true [2021-11-20 06:02:37,853 INFO L793 eck$LassoCheckResult]: Loop: 7#L26-2true assume !!(main_~x~0#1 >= 0);main_~x~0#1 := main_~x~0#1 + main_~a~0#1 - main_~b~0#1 - 1; 7#L26-2true [2021-11-20 06:02:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,859 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2021-11-20 06:02:37,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561570510] [2021-11-20 06:02:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:02:37,944 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:02:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:02:37,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:02:37,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,967 INFO L85 PathProgramCache]: Analyzing trace with hash 60, now seen corresponding path program 1 times [2021-11-20 06:02:37,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657514076] [2021-11-20 06:02:37,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:02:37,975 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:02:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:02:37,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:02:37,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:37,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907762, now seen corresponding path program 1 times [2021-11-20 06:02:37,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:02:37,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144841716] [2021-11-20 06:02:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:02:37,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:02:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:02:37,991 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:02:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:02:37,999 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:02:38,108 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:02:38,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:02:38,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:02:38,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:02:38,109 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:02:38,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:38,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:02:38,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:02:38,110 INFO L133 ssoRankerPreferences]: Filename of dumped script: Stockholm-1.c_Iteration1_Lasso [2021-11-20 06:02:38,110 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:02:38,111 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:02:38,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,264 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:02:38,265 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:02:38,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:38,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:38,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:02:38,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:02:38,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:02:38,317 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:02:38,317 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: [] [2021-11-20 06:02:38,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:38,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:38,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:38,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:38,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:02:38,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:02:38,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:02:38,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:38,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:38,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:38,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:38,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:02:38,439 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:02:38,439 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:02:38,528 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:02:38,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:38,533 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:02:38,533 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:02:38,533 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:02:38,533 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:02:38,534 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:02:38,534 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:38,534 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:02:38,534 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:02:38,534 INFO L133 ssoRankerPreferences]: Filename of dumped script: Stockholm-1.c_Iteration1_Lasso [2021-11-20 06:02:38,534 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:02:38,534 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:02:38,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:02:38,687 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:02:38,692 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:02:38,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:38,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:38,701 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:38,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 06:02:38,711 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 [2021-11-20 06:02:38,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:02:38,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:02:38,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:02:38,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:02:38,748 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 06:02:38,748 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 06:02:38,786 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:02:38,797 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2021-11-20 06:02:38,797 INFO L444 ModelExtractionUtils]: 6 out of 13 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-11-20 06:02:38,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:02:38,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:02:38,807 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:02:38,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:02:38,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 06:02:38,885 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2021-11-20 06:02:38,886 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:02:38,886 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [-1*ULTIMATE.start_main_~a~0#1 + 1*ULTIMATE.start_main_~b~0#1 >= 0] [2021-11-20 06:02:38,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-11-20 06:02:38,915 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-11-20 06:02:38,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:02:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:38,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:02:38,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:02:39,013 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:02:39,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:02:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:02:39,050 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-11-20 06:02:39,052 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-20 06:02:39,118 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 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). Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 24 states and 30 transitions. Complement of second has 5 states. [2021-11-20 06:02:39,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 06:02:39,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-20 06:02:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-11-20 06:02:39,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 6 letters. Loop has 1 letters. [2021-11-20 06:02:39,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:02:39,130 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 7 letters. Loop has 1 letters. [2021-11-20 06:02:39,130 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:02:39,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 6 letters. Loop has 2 letters. [2021-11-20 06:02:39,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:02:39,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 30 transitions. [2021-11-20 06:02:39,139 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:02:39,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2021-11-20 06:02:39,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 06:02:39,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 06:02:39,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 06:02:39,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:02:39,144 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:02:39,144 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:02:39,144 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:02:39,144 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:02:39,144 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:02:39,145 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:02:39,145 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 06:02:39,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:02:39 BoogieIcfgContainer [2021-11-20 06:02:39,154 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 06:02:39,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:02:39,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:02:39,160 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:02:39,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:02:37" (3/4) ... [2021-11-20 06:02:39,165 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:02:39,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:02:39,167 INFO L158 Benchmark]: Toolchain (without parser) took 2015.96ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 92.2MB in the beginning and 104.5MB in the end (delta: -12.3MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2021-11-20 06:02:39,168 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:02:39,169 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.42ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 96.6MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:02:39,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.54ms. Allocated memory is still 121.6MB. Free memory was 96.6MB in the beginning and 95.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:02:39,176 INFO L158 Benchmark]: Boogie Preprocessor took 17.50ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 94.2MB in the end (delta: 937.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:02:39,177 INFO L158 Benchmark]: RCFGBuilder took 286.15ms. Allocated memory is still 121.6MB. Free memory was 94.2MB in the beginning and 85.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:02:39,177 INFO L158 Benchmark]: BuchiAutomizer took 1434.10ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 85.8MB in the beginning and 105.2MB in the end (delta: -19.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-20 06:02:39,178 INFO L158 Benchmark]: Witness Printer took 6.64ms. Allocated memory is still 148.9MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:02:39,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 121.6MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.42ms. Allocated memory is still 121.6MB. Free memory was 92.0MB in the beginning and 96.6MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.54ms. Allocated memory is still 121.6MB. Free memory was 96.6MB in the beginning and 95.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.50ms. Allocated memory is still 121.6MB. Free memory was 95.1MB in the beginning and 94.2MB in the end (delta: 937.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 286.15ms. Allocated memory is still 121.6MB. Free memory was 94.2MB in the beginning and 85.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1434.10ms. Allocated memory was 121.6MB in the beginning and 148.9MB in the end (delta: 27.3MB). Free memory was 85.8MB in the beginning and 105.2MB in the end (delta: -19.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Witness Printer took 6.64ms. Allocated memory is still 148.9MB. Free memory is still 104.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 16 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital32 mio100 ax137 hnf100 lsp72 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq140 hnf95 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 193ms VariablesStem: 3 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 06:02:39,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:02:39,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90aeeef3-f7b4-4586-b22f-822ef690965f/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE