./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 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:15:54,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:15:54,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:15:54,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:15:54,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:15:54,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:15:54,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:15:54,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:15:54,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:15:54,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:15:54,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:15:54,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:15:54,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:15:54,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:15:54,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:15:54,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:15:54,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:15:54,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:15:54,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:15:54,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:15:54,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:15:54,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:15:54,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:15:54,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:15:54,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:15:54,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:15:54,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:15:54,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:15:54,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:15:54,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:15:54,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:15:54,826 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:15:54,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:15:54,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:15:54,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:15:54,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:15:54,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:15:54,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:15:54,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:15:54,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:15:54,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:15:54,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 20:15:54,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:15:54,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:15:54,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:15:54,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:15:54,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:15:54,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:15:54,866 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:15:54,866 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 20:15:54,866 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 20:15:54,867 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 20:15:54,867 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 20:15:54,867 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 20:15:54,867 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 20:15:54,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:15:54,868 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:15:54,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:15:54,868 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:15:54,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 20:15:54,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 20:15:54,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 20:15:54,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:15:54,869 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 20:15:54,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:15:54,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 20:15:54,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:15:54,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:15:54,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:15:54,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:15:54,872 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 20:15:54,872 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_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 [2022-11-02 20:15:55,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:15:55,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:15:55,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:15:55,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:15:55,181 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:15:55,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2022-11-02 20:15:55,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/data/0933d27d9/584b64331d5d4cb4bad72738548089c1/FLAGe5aff2de5 [2022-11-02 20:15:55,787 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:15:55,787 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2022-11-02 20:15:55,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/data/0933d27d9/584b64331d5d4cb4bad72738548089c1/FLAGe5aff2de5 [2022-11-02 20:15:56,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/data/0933d27d9/584b64331d5d4cb4bad72738548089c1 [2022-11-02 20:15:56,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:15:56,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:15:56,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:15:56,176 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:15:56,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:15:56,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d48b34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56, skipping insertion in model container [2022-11-02 20:15:56,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:15:56,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:15:56,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:15:56,437 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:15:56,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:15:56,483 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:15:56,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56 WrapperNode [2022-11-02 20:15:56,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:15:56,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:15:56,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:15:56,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:15:56,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,533 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-11-02 20:15:56,534 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:15:56,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:15:56,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:15:56,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:15:56,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,562 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:15:56,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:15:56,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:15:56,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:15:56,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (1/1) ... [2022-11-02 20:15:56,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 20:15:56,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:15:56,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 20:15:56,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 20:15:56,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:15:56,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:15:56,789 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:15:56,793 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:15:56,879 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:15:56,887 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:15:56,888 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:15:56,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:56 BoogieIcfgContainer [2022-11-02 20:15:56,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:15:56,892 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 20:15:56,892 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 20:15:56,897 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 20:15:56,898 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:15:56,898 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 08:15:56" (1/3) ... [2022-11-02 20:15:56,899 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c638ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:15:56, skipping insertion in model container [2022-11-02 20:15:56,899 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:15:56,900 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:15:56" (2/3) ... [2022-11-02 20:15:56,900 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c638ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 08:15:56, skipping insertion in model container [2022-11-02 20:15:56,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 20:15:56,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:56" (3/3) ... [2022-11-02 20:15:56,902 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2022-11-02 20:15:56,975 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 20:15:56,976 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 20:15:56,976 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 20:15:56,976 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 20:15:56,976 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 20:15:56,976 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 20:15:56,977 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 20:15:56,977 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 20:15:56,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:57,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:15:57,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:15:57,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:15:57,015 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:15:57,015 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:15:57,016 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 20:15:57,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:15:57,017 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 20:15:57,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 20:15:57,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 20:15:57,018 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-02 20:15:57,019 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 20:15:57,029 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue 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;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L13-2true [2022-11-02 20:15:57,029 INFO L750 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(0 != main_~y~0#1);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 3#L17true assume main_~x~0#1 <= 0 || main_~y~0#1 <= 0;main_~y~0#1 := 0; 9#L23-3true main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 6#L13-2true [2022-11-02 20:15:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-02 20:15:57,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:57,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910711110] [2022-11-02 20:15:57,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:57,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,155 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:15:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:15:57,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash 40830, now seen corresponding path program 1 times [2022-11-02 20:15:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:57,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164279452] [2022-11-02 20:15:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:57,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:15:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:15:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:15:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash 28699772, now seen corresponding path program 1 times [2022-11-02 20:15:57,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:15:57,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123421333] [2022-11-02 20:15:57,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:15:57,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:15:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,248 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:15:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:15:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:15:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:15:57,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 08:15:57 BoogieIcfgContainer [2022-11-02 20:15:57,497 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 20:15:57,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:15:57,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:15:57,498 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:15:57,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:15:56" (3/4) ... [2022-11-02 20:15:57,502 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-02 20:15:57,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:15:57,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:15:57,556 INFO L158 Benchmark]: Toolchain (without parser) took 1383.08ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 65.7MB in the beginning and 74.5MB in the end (delta: -8.7MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2022-11-02 20:15:57,557 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 98.6MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:15:57,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.58ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 65.5MB in the beginning and 108.0MB in the end (delta: -42.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:15:57,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.77ms. Allocated memory is still 132.1MB. Free memory was 108.0MB in the beginning and 106.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:15:57,559 INFO L158 Benchmark]: Boogie Preprocessor took 29.40ms. Allocated memory is still 132.1MB. Free memory was 106.8MB in the beginning and 105.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:15:57,560 INFO L158 Benchmark]: RCFGBuilder took 323.95ms. Allocated memory is still 132.1MB. Free memory was 105.5MB in the beginning and 97.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:15:57,561 INFO L158 Benchmark]: BuchiAutomizer took 605.13ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 76.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-02 20:15:57,562 INFO L158 Benchmark]: Witness Printer took 54.06ms. Allocated memory is still 132.1MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:15:57,566 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 98.6MB. Free memory was 51.6MB in the beginning and 51.5MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.58ms. Allocated memory was 98.6MB in the beginning and 132.1MB in the end (delta: 33.6MB). Free memory was 65.5MB in the beginning and 108.0MB in the end (delta: -42.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.77ms. Allocated memory is still 132.1MB. Free memory was 108.0MB in the beginning and 106.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.40ms. Allocated memory is still 132.1MB. Free memory was 106.8MB in the beginning and 105.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.95ms. Allocated memory is still 132.1MB. Free memory was 105.5MB in the beginning and 97.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 605.13ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 76.1MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 54.06ms. Allocated memory is still 132.1MB. Free memory was 76.1MB in the beginning and 74.5MB in the end (delta: 1.7MB). 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 [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. - 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! [2022-11-02 20:15:57,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ffbb5f1c-6444-4b31-a442-b09af6d3e243/bin/uautomizer-Dbtcem3rbc/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)