./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Division-2.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_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/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_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Division-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/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_96acd721-88ac-43a0-999a-1620ad5af3b1/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 bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:06:28,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:06:28,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:06:28,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:06:28,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:06:28,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:06:28,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:06:28,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:06:28,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:06:28,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:06:28,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:06:28,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:06:28,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:06:28,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:06:28,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:06:28,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:06:28,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:06:28,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:06:28,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:06:28,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:06:28,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:06:28,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:06:28,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:06:28,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:06:28,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:06:28,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:06:28,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:06:28,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:06:28,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:06:28,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:06:28,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:06:28,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:06:28,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:06:28,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:06:28,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:06:28,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:06:28,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:06:28,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:06:28,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:06:28,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:06:28,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:06:28,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 07:06:28,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:06:28,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:06:28,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:06:28,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:06:28,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:06:28,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:06:28,335 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:06:28,335 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 07:06:28,335 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 07:06:28,335 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 07:06:28,336 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 07:06:28,336 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 07:06:28,336 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 07:06:28,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:06:28,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:06:28,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:06:28,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:06:28,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 07:06:28,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 07:06:28,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 07:06:28,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:06:28,338 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 07:06:28,339 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:06:28,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 07:06:28,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:06:28,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:06:28,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:06:28,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:06:28,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:06:28,341 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 07:06:28,342 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_96acd721-88ac-43a0-999a-1620ad5af3b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcd985be4d5b056143625ede780ed1bdcfd1a69390fda6644aa25539fa51e5a7 [2021-11-20 07:06:28,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:06:28,620 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:06:28,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:06:28,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:06:28,625 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:06:28,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-crafted/Division-2.c [2021-11-20 07:06:28,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/data/943a64392/d92010547eb04e8080c1ca6e14694379/FLAGcfe902cc7 [2021-11-20 07:06:29,241 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:06:29,242 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/sv-benchmarks/c/termination-crafted/Division-2.c [2021-11-20 07:06:29,248 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/data/943a64392/d92010547eb04e8080c1ca6e14694379/FLAGcfe902cc7 [2021-11-20 07:06:29,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/data/943a64392/d92010547eb04e8080c1ca6e14694379 [2021-11-20 07:06:29,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:06:29,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:06:29,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:06:29,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:06:29,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:06:29,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100b0b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29, skipping insertion in model container [2021-11-20 07:06:29,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:06:29,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:06:29,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:06:29,841 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:06:29,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:06:29,876 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:06:29,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29 WrapperNode [2021-11-20 07:06:29,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:06:29,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:06:29,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:06:29,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:06:29,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,921 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2021-11-20 07:06:29,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:06:29,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:06:29,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:06:29,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:06:29,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:06:29,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:06:29,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:06:29,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:06:29,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (1/1) ... [2021-11-20 07:06:29,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:06:29,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:06:29,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:06:30,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 07:06:30,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:06:30,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:06:30,087 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:06:30,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:06:30,156 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:06:30,164 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:06:30,164 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:06:30,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:06:30 BoogieIcfgContainer [2021-11-20 07:06:30,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:06:30,167 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 07:06:30,168 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 07:06:30,171 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 07:06:30,172 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:06:30,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:06:29" (1/3) ... [2021-11-20 07:06:30,174 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18c2fce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:06:30, skipping insertion in model container [2021-11-20 07:06:30,174 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:06:30,174 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:06:29" (2/3) ... [2021-11-20 07:06:30,175 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@18c2fce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:06:30, skipping insertion in model container [2021-11-20 07:06:30,175 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:06:30,175 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:06:30" (3/3) ... [2021-11-20 07:06:30,177 INFO L388 chiAutomizerObserver]: Analyzing ICFG Division-2.c [2021-11-20 07:06:30,231 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 07:06:30,232 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 07:06:30,232 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 07:06:30,232 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 07:06:30,232 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 07:06:30,232 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 07:06:30,233 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 07:06:30,233 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 07:06:30,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 07:06:30,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 07:06:30,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:06:30,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:06:30,282 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 07:06:30,282 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 07:06:30,282 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 07:06:30,283 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 07:06:30,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-20 07:06:30,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:06:30,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:06:30,285 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 07:06:30,285 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-20 07:06:30,293 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 7#L14-2true [2021-11-20 07:06:30,293 INFO L793 eck$LassoCheckResult]: Loop: 7#L14-2true assume !!(main_~y~0#1 >= 0 && main_~y~0#1 <= 10);main_~y~0#1 := (if 1 + 2 * main_~y~0#1 < 0 && 0 != (1 + 2 * main_~y~0#1) % 2 then 1 + (1 + 2 * main_~y~0#1) / 2 else (1 + 2 * main_~y~0#1) / 2); 7#L14-2true [2021-11-20 07:06:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:06:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 07:06:30,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:06:30,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788971718] [2021-11-20 07:06:30,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:06:30,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:06:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:06:30,416 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:06:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:06:30,470 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:06:30,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:06:30,474 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-11-20 07:06:30,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:06:30,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881126995] [2021-11-20 07:06:30,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:06:30,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:06:30,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:06:30,505 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:06:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:06:30,531 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:06:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:06:30,536 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-11-20 07:06:30,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:06:30,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113940436] [2021-11-20 07:06:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:06:30,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:06:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:06:30,552 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:06:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:06:30,560 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:06:30,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:06:30 BoogieIcfgContainer [2021-11-20 07:06:30,736 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 07:06:30,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:06:30,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:06:30,738 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:06:30,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:06:30" (3/4) ... [2021-11-20 07:06:30,741 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-20 07:06:30,821 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:06:30,822 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:06:30,824 INFO L158 Benchmark]: Toolchain (without parser) took 1197.88ms. Allocated memory is still 155.2MB. Free memory was 122.4MB in the beginning and 102.1MB in the end (delta: 20.3MB). Peak memory consumption was 18.2MB. Max. memory is 16.1GB. [2021-11-20 07:06:30,825 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:06:30,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.23ms. Allocated memory is still 155.2MB. Free memory was 122.1MB in the beginning and 131.5MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:06:30,827 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.95ms. Allocated memory is still 155.2MB. Free memory was 131.5MB in the beginning and 130.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:06:30,831 INFO L158 Benchmark]: Boogie Preprocessor took 26.64ms. Allocated memory is still 155.2MB. Free memory was 130.0MB in the beginning and 129.3MB in the end (delta: 658.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:06:30,833 INFO L158 Benchmark]: RCFGBuilder took 215.53ms. Allocated memory is still 155.2MB. Free memory was 129.0MB in the beginning and 121.3MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:06:30,834 INFO L158 Benchmark]: BuchiAutomizer took 569.15ms. Allocated memory is still 155.2MB. Free memory was 121.0MB in the beginning and 103.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 07:06:30,835 INFO L158 Benchmark]: Witness Printer took 84.79ms. Allocated memory is still 155.2MB. Free memory was 103.6MB in the beginning and 102.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:06:30,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 90.2MB. Free memory was 44.5MB in the beginning and 44.5MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.23ms. Allocated memory is still 155.2MB. Free memory was 122.1MB in the beginning and 131.5MB in the end (delta: -9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.95ms. Allocated memory is still 155.2MB. Free memory was 131.5MB in the beginning and 130.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.64ms. Allocated memory is still 155.2MB. Free memory was 130.0MB in the beginning and 129.3MB in the end (delta: 658.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.53ms. Allocated memory is still 155.2MB. Free memory was 129.0MB in the beginning and 121.3MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 569.15ms. Allocated memory is still 155.2MB. Free memory was 121.0MB in the beginning and 103.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 84.79ms. Allocated memory is still 155.2MB. Free memory was 103.6MB in the beginning and 102.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 14]: 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 {y=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1f8726d5=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int y = __VERIFIER_nondet_int(); Loop: [L14] COND TRUE y >= 0 && y <= 10 [L15] y = (2*y + 1) / 2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-20 07:06:30,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96acd721-88ac-43a0-999a-1620ad5af3b1/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)