./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU --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 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:45:58,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:45:58,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:45:58,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:45:58,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:45:58,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:45:58,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:45:58,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:45:58,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:45:58,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:45:58,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:45:58,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:45:58,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:45:58,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:45:58,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:45:58,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:45:58,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:45:58,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:45:58,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:45:58,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:45:58,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:45:58,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:45:58,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:45:58,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:45:58,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:45:58,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:45:58,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:45:58,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:45:58,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:45:58,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:45:58,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:45:58,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:45:58,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:45:58,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:45:58,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:45:58,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:45:58,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:45:58,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:45:58,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:45:58,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:45:58,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:45:58,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-02 22:45:58,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:45:58,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:45:58,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:45:58,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:45:58,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:45:58,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:45:58,879 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:45:58,879 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-02 22:45:58,879 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-02 22:45:58,880 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-02 22:45:58,881 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-02 22:45:58,881 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-02 22:45:58,882 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-02 22:45:58,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:45:58,882 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:45:58,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:45:58,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:45:58,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-02 22:45:58,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-02 22:45:58,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-02 22:45:58,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:45:58,884 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-02 22:45:58,884 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:45:58,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-02 22:45:58,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:45:58,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:45:58,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:45:58,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:45:58,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:45:58,890 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-02 22:45:58,890 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_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 [2021-11-02 22:45:59,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:45:59,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:45:59,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:45:59,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:45:59,264 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:45:59,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2021-11-02 22:45:59,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/data/7ddce3b70/eaa4826fe7f8472287c03e0665d2c67b/FLAGe870dcd53 [2021-11-02 22:45:59,824 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:45:59,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2021-11-02 22:45:59,831 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/data/7ddce3b70/eaa4826fe7f8472287c03e0665d2c67b/FLAGe870dcd53 [2021-11-02 22:46:00,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/data/7ddce3b70/eaa4826fe7f8472287c03e0665d2c67b [2021-11-02 22:46:00,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:46:00,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:46:00,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:00,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:46:00,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:46:00,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592b7e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00, skipping insertion in model container [2021-11-02 22:46:00,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:46:00,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:46:00,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:00,451 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:46:00,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:46:00,480 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:46:00,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00 WrapperNode [2021-11-02 22:46:00,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:46:00,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:46:00,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:46:00,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:46:00,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:46:00,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:46:00,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:46:00,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:46:00,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:46:00,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:46:00,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:46:00,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:46:00,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (1/1) ... [2021-11-02 22:46:00,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-02 22:46:00,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:00,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-02 22:46:00,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-02 22:46:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:46:00,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:46:00,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:46:00,812 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-02 22:46:00,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:46:00 BoogieIcfgContainer [2021-11-02 22:46:00,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:46:00,816 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-02 22:46:00,816 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-02 22:46:00,820 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-02 22:46:00,821 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:46:00,821 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 10:46:00" (1/3) ... [2021-11-02 22:46:00,823 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@660057e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:46:00, skipping insertion in model container [2021-11-02 22:46:00,823 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:46:00,823 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:46:00" (2/3) ... [2021-11-02 22:46:00,823 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@660057e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 10:46:00, skipping insertion in model container [2021-11-02 22:46:00,824 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-02 22:46:00,824 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:46:00" (3/3) ... [2021-11-02 22:46:00,825 INFO L389 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2021-11-02 22:46:00,876 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-02 22:46:00,876 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-02 22:46:00,876 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-02 22:46:00,877 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-02 22:46:00,877 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-02 22:46:00,877 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-02 22:46:00,877 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-02 22:46:00,877 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-02 22:46:00,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:00,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-02 22:46:00,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:46:00,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:46:00,922 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-02 22:46:00,922 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-02 22:46:00,923 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-02 22:46:00,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:00,925 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-11-02 22:46:00,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-02 22:46:00,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-02 22:46:00,926 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-02 22:46:00,926 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-02 22:46:00,933 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L13-2true [2021-11-02 22:46:00,934 INFO L793 eck$LassoCheckResult]: Loop: 7#L13-2true assume !!(0 != main_~y~0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 4#L17true assume main_~x~0 <= 0 || main_~y~0 <= 0;main_~y~0 := 0; 10#L23-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 7#L13-2true [2021-11-02 22:46:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:00,941 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-11-02 22:46:00,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:00,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719165441] [2021-11-02 22:46:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:00,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:46:01,072 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:46:01,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:46:01,096 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:46:01,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash 39837, now seen corresponding path program 1 times [2021-11-02 22:46:01,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:01,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330772495] [2021-11-02 22:46:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:01,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:46:01,137 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:46:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:46:01,167 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:46:01,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash 963358, now seen corresponding path program 1 times [2021-11-02 22:46:01,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:01,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821579808] [2021-11-02 22:46:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:01,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:46:01,188 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:46:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:46:01,198 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:46:01,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 10:46:01 BoogieIcfgContainer [2021-11-02 22:46:01,447 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-02 22:46:01,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:46:01,449 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:46:01,449 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:46:01,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:46:00" (3/4) ... [2021-11-02 22:46:01,452 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-02 22:46:01,508 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:46:01,508 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:46:01,510 INFO L168 Benchmark]: Toolchain (without parser) took 1287.64 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 55.4 MB in the beginning and 62.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:01,511 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory is still 71.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:46:01,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.94 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 55.2 MB in the beginning and 94.3 MB in the end (delta: -39.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:01,512 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.04 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 93.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:46:01,513 INFO L168 Benchmark]: Boogie Preprocessor took 20.97 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 92.3 MB in the end (delta: 506.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:01,513 INFO L168 Benchmark]: RCFGBuilder took 279.26 ms. Allocated memory is still 117.4 MB. Free memory was 91.8 MB in the beginning and 83.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:01,514 INFO L168 Benchmark]: BuchiAutomizer took 631.12 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 65.5 MB in the end (delta: 18.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:01,515 INFO L168 Benchmark]: Witness Printer took 60.06 ms. Allocated memory is still 117.4 MB. Free memory was 65.5 MB in the beginning and 62.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-02 22:46:01,518 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory is still 71.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.94 ms. Allocated memory was 92.3 MB in the beginning and 117.4 MB in the end (delta: 25.2 MB). Free memory was 55.2 MB in the beginning and 94.3 MB in the end (delta: -39.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.04 ms. Allocated memory is still 117.4 MB. Free memory was 94.3 MB in the beginning and 93.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.97 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 92.3 MB in the end (delta: 506.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 279.26 ms. Allocated memory is still 117.4 MB. Free memory was 91.8 MB in the beginning and 83.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 631.12 ms. Allocated memory is still 117.4 MB. Free memory was 83.9 MB in the beginning and 65.5 MB in the end (delta: 18.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.06 ms. Allocated memory is still 117.4 MB. Free memory was 65.5 MB in the beginning and 62.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * 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: No data available 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: 13]: 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 {xtmp=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@643e93e1=0, tmp=-1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@53bcba4=0, x=-1, y=-1} - 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 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-02 22:46:01,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03db07fa-0f00-411e-a9ff-c5daa55d20f6/bin/uautomizer-tBqnrhUYjU/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)