./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --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 35227298135ad932045d20354d3c27230a951768ba1221004cc62379288111ba --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:56:01,785 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:56:01,844 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-31 21:56:01,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:56:01,848 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:56:01,884 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:56:01,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:56:01,885 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:56:01,885 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:56:01,886 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:56:01,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:56:01,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:56:01,887 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:56:01,888 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 21:56:01,888 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 21:56:01,889 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 21:56:01,889 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 21:56:01,890 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 21:56:01,890 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 21:56:01,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:56:01,891 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 21:56:01,892 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:56:01,893 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:56:01,893 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 21:56:01,893 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 21:56:01,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 21:56:01,903 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:56:01,906 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:56:01,907 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:56:01,907 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 21:56:01,907 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:56:01,908 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:56:01,908 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:56:01,908 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:56:01,909 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:56:01,909 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 21:56:01,914 INFO L153 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_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35227298135ad932045d20354d3c27230a951768ba1221004cc62379288111ba [2024-10-31 21:56:02,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:56:02,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:56:02,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:56:02,288 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:56:02,289 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:56:02,290 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/termination-restricted-15/GCD2.c Unable to find full path for "g++" [2024-10-31 21:56:04,617 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:56:04,804 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:56:04,805 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/sv-benchmarks/c/termination-restricted-15/GCD2.c [2024-10-31 21:56:04,811 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/data/0e4055b57/eebd37779deb4eb5a84c6684252c2801/FLAG13ce9cbf0 [2024-10-31 21:56:04,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/data/0e4055b57/eebd37779deb4eb5a84c6684252c2801 [2024-10-31 21:56:04,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:56:04,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:56:04,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:04,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:56:04,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:56:04,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:04" (1/1) ... [2024-10-31 21:56:04,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b70d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:04, skipping insertion in model container [2024-10-31 21:56:04,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:56:04" (1/1) ... [2024-10-31 21:56:04,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:56:05,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:05,043 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:56:05,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:56:05,073 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:56:05,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05 WrapperNode [2024-10-31 21:56:05,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:56:05,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:05,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:56:05,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:56:05,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,107 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-10-31 21:56:05,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:56:05,108 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:56:05,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:56:05,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:56:05,121 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,129 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-31 21:56:05,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,141 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:56:05,144 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:56:05,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:56:05,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:56:05,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (1/1) ... [2024-10-31 21:56:05,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:56:05,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:56:05,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:56:05,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 21:56:05,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:56:05,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:56:05,317 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:56:05,320 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:56:05,411 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-10-31 21:56:05,411 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:56:05,427 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:56:05,428 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 21:56:05,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:05 BoogieIcfgContainer [2024-10-31 21:56:05,428 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:56:05,430 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 21:56:05,430 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 21:56:05,434 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 21:56:05,435 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:56:05,435 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 09:56:04" (1/3) ... [2024-10-31 21:56:05,436 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@696c73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 09:56:05, skipping insertion in model container [2024-10-31 21:56:05,437 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:56:05,437 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:56:05" (2/3) ... [2024-10-31 21:56:05,437 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@696c73f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 09:56:05, skipping insertion in model container [2024-10-31 21:56:05,438 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:56:05,438 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:05" (3/3) ... [2024-10-31 21:56:05,440 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD2.c [2024-10-31 21:56:05,513 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 21:56:05,514 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 21:56:05,514 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 21:56:05,514 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 21:56:05,514 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 21:56:05,515 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 21:56:05,515 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 21:56:05,515 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 21:56:05,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2024-10-31 21:56:05,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 21:56:05,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:56:05,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:56:05,548 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 21:56:05,548 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 21:56:05,549 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 21:56:05,549 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2024-10-31 21:56:05,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-31 21:56:05,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:56:05,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:56:05,554 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 21:56:05,554 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-31 21:56:05,565 INFO L745 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L13-2true [2024-10-31 21:56:05,566 INFO L747 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!((0 != main_~y~0#1 && main_~x~0#1 >= 0) && main_~y~0#1 >= 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 3#L17true assume main_~x~0#1 == main_~y~0#1;main_~y~0#1 := 0; 4#L21-3true main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 6#L13-2true [2024-10-31 21:56:05,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 21:56:05,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:05,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836741765] [2024-10-31 21:56:05,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:05,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:05,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:56:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:05,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:56:05,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash 40825, now seen corresponding path program 1 times [2024-10-31 21:56:05,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:05,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655889087] [2024-10-31 21:56:05,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:05,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:05,717 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:56:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:05,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:56:05,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:56:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 28699767, now seen corresponding path program 1 times [2024-10-31 21:56:05,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:56:05,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720148908] [2024-10-31 21:56:05,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:56:05,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:56:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:05,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:56:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:05,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:56:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:06,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:56:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:56:06,038 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 09:56:06 BoogieIcfgContainer [2024-10-31 21:56:06,038 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 21:56:06,039 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 21:56:06,039 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 21:56:06,040 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 21:56:06,040 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:56:05" (3/4) ... [2024-10-31 21:56:06,042 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-31 21:56:06,086 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 21:56:06,086 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 21:56:06,088 INFO L158 Benchmark]: Toolchain (without parser) took 1258.77ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 61.0MB in the end (delta: 46.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-10-31 21:56:06,089 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 144.7MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 21:56:06,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.13ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 96.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 21:56:06,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.86ms. Allocated memory is still 144.7MB. Free memory was 96.1MB in the beginning and 95.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 21:56:06,091 INFO L158 Benchmark]: Boogie Preprocessor took 33.26ms. Allocated memory is still 144.7MB. Free memory was 95.0MB in the beginning and 93.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 21:56:06,092 INFO L158 Benchmark]: RCFGBuilder took 285.11ms. Allocated memory is still 144.7MB. Free memory was 93.5MB in the beginning and 84.5MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-31 21:56:06,092 INFO L158 Benchmark]: BuchiAutomizer took 608.56ms. Allocated memory is still 144.7MB. Free memory was 84.1MB in the beginning and 62.9MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-31 21:56:06,096 INFO L158 Benchmark]: Witness Printer took 47.60ms. Allocated memory is still 144.7MB. Free memory was 62.4MB in the beginning and 61.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 21:56:06,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 144.7MB. Free memory is still 112.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.13ms. Allocated memory is still 144.7MB. Free memory was 107.6MB in the beginning and 96.1MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.86ms. Allocated memory is still 144.7MB. Free memory was 96.1MB in the beginning and 95.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.26ms. Allocated memory is still 144.7MB. Free memory was 95.0MB in the beginning and 93.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.11ms. Allocated memory is still 144.7MB. Free memory was 93.5MB in the beginning and 84.5MB in the end (delta: 8.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 608.56ms. Allocated memory is still 144.7MB. Free memory was 84.1MB in the beginning and 62.9MB in the end (delta: 21.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 47.60ms. Allocated memory is still 144.7MB. Free memory was 62.4MB in the beginning and 61.0MB in the end (delta: 1.4MB). 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 0.5s 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 InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE (y != 0 && x >= 0) && y >= 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x == y [L18] y = 0 [L26] y = xtmp [L27] x = tmp End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE (y != 0 && x >= 0) && y >= 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x == y [L18] y = 0 [L26] y = xtmp [L27] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-31 21:56:06,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82db4381-4ae4-4dfe-b051-eb5301d595fb/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)