./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 6b4ec56b 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_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN --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 35227298135ad932045d20354d3c27230a951768ba1221004cc62379288111ba --- 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-6b4ec56 [2022-11-20 09:29:05,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:29:05,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:29:05,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:29:05,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:29:05,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:29:05,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:29:05,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:29:05,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:29:05,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:29:05,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:29:05,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:29:05,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:29:05,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:29:05,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:29:05,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:29:05,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:29:05,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:29:05,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:29:05,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:29:05,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:29:05,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:29:05,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:29:05,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:29:05,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:29:05,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:29:05,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:29:05,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:29:05,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:29:05,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:29:05,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:29:05,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:29:05,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:29:05,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:29:05,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:29:05,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:29:05,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:29:05,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:29:05,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:29:05,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:29:05,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:29:05,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-20 09:29:06,031 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:29:06,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:29:06,032 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:29:06,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:29:06,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:29:06,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:29:06,036 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:29:06,037 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 09:29:06,037 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 09:29:06,037 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 09:29:06,038 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 09:29:06,039 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 09:29:06,039 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 09:29:06,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:29:06,039 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 09:29:06,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:29:06,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:29:06,040 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 09:29:06,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 09:29:06,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 09:29:06,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:29:06,041 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 09:29:06,041 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:29:06,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 09:29:06,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:29:06,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:29:06,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:29:06,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:29:06,045 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 09:29:06,045 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_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35227298135ad932045d20354d3c27230a951768ba1221004cc62379288111ba [2022-11-20 09:29:06,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:29:06,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:29:06,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:29:06,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:29:06,329 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:29:06,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-restricted-15/GCD2.c [2022-11-20 09:29:09,358 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:29:09,545 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:29:09,546 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/sv-benchmarks/c/termination-restricted-15/GCD2.c [2022-11-20 09:29:09,552 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/data/14f0e165c/c5209f9afe334dd69d1c8ef4aa7d52d4/FLAG8d35d1f77 [2022-11-20 09:29:09,570 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/data/14f0e165c/c5209f9afe334dd69d1c8ef4aa7d52d4 [2022-11-20 09:29:09,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:29:09,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:29:09,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:29:09,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:29:09,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:29:09,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@501bb1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09, skipping insertion in model container [2022-11-20 09:29:09,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:29:09,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:29:09,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:29:09,751 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:29:09,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:29:09,778 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:29:09,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09 WrapperNode [2022-11-20 09:29:09,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:29:09,780 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:29:09,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:29:09,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:29:09,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,811 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-20 09:29:09,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:29:09,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:29:09,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:29:09,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:29:09,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,827 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,834 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:29:09,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:29:09,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:29:09,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:29:09,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (1/1) ... [2022-11-20 09:29:09,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 09:29:09,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:09,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 09:29:09,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 09:29:09,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:29:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:29:10,031 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:29:10,034 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:29:10,153 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:29:10,163 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:29:10,163 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 09:29:10,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:10 BoogieIcfgContainer [2022-11-20 09:29:10,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:29:10,167 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 09:29:10,168 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 09:29:10,172 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 09:29:10,173 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:29:10,173 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 09:29:09" (1/3) ... [2022-11-20 09:29:10,176 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27c996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:29:10, skipping insertion in model container [2022-11-20 09:29:10,176 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:29:10,176 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:29:09" (2/3) ... [2022-11-20 09:29:10,178 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27c996f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 09:29:10, skipping insertion in model container [2022-11-20 09:29:10,178 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 09:29:10,178 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:10" (3/3) ... [2022-11-20 09:29:10,179 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD2.c [2022-11-20 09:29:10,247 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 09:29:10,247 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 09:29:10,247 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 09:29:10,247 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 09:29:10,247 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 09:29:10,247 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 09:29:10,248 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 09:29:10,248 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 09:29:10,252 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) [2022-11-20 09:29:10,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 09:29:10,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:29:10,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:29:10,279 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 09:29:10,279 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 09:29:10,280 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 09:29:10,280 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) [2022-11-20 09:29:10,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 09:29:10,281 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 09:29:10,281 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 09:29:10,282 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-20 09:29:10,282 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-20 09:29:10,295 INFO L748 eck$LassoCheckResult]: Stem: 5#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; 7#L13-2true [2022-11-20 09:29:10,297 INFO L750 eck$LassoCheckResult]: Loop: 7#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; 7#L13-2true [2022-11-20 09:29:10,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-20 09:29:10,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:10,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354056955] [2022-11-20 09:29:10,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:29:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:29:10,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:10,469 INFO L85 PathProgramCache]: Analyzing trace with hash 40825, now seen corresponding path program 1 times [2022-11-20 09:29:10,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:10,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099222576] [2022-11-20 09:29:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:29:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:29:10,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:10,534 INFO L85 PathProgramCache]: Analyzing trace with hash 28699767, now seen corresponding path program 1 times [2022-11-20 09:29:10,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:10,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807196494] [2022-11-20 09:29:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:10,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,562 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:29:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,581 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 09:29:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,809 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 09:29:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 09:29:10,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 09:29:10 BoogieIcfgContainer [2022-11-20 09:29:10,838 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 09:29:10,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:29:10,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:29:10,839 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:29:10,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:29:10" (3/4) ... [2022-11-20 09:29:10,843 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-20 09:29:10,883 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:29:10,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:29:10,886 INFO L158 Benchmark]: Toolchain (without parser) took 1310.66ms. Allocated memory is still 192.9MB. Free memory was 149.4MB in the beginning and 104.5MB in the end (delta: 44.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2022-11-20 09:29:10,886 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:29:10,887 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.43ms. Allocated memory is still 192.9MB. Free memory was 149.2MB in the beginning and 140.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 09:29:10,888 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.97ms. Allocated memory is still 192.9MB. Free memory was 140.2MB in the beginning and 138.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:29:10,889 INFO L158 Benchmark]: Boogie Preprocessor took 23.91ms. Allocated memory is still 192.9MB. Free memory was 138.9MB in the beginning and 137.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:29:10,890 INFO L158 Benchmark]: RCFGBuilder took 328.62ms. Allocated memory is still 192.9MB. Free memory was 137.4MB in the beginning and 128.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 09:29:10,890 INFO L158 Benchmark]: BuchiAutomizer took 670.48ms. Allocated memory is still 192.9MB. Free memory was 128.4MB in the beginning and 106.0MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 09:29:10,891 INFO L158 Benchmark]: Witness Printer took 45.41ms. Allocated memory is still 192.9MB. Free memory was 106.0MB in the beginning and 104.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:29:10,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 123.7MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.43ms. Allocated memory is still 192.9MB. Free memory was 149.2MB in the beginning and 140.2MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.97ms. Allocated memory is still 192.9MB. Free memory was 140.2MB in the beginning and 138.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.91ms. Allocated memory is still 192.9MB. Free memory was 138.9MB in the beginning and 137.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 328.62ms. Allocated memory is still 192.9MB. Free memory was 137.4MB in the beginning and 128.4MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 670.48ms. Allocated memory is still 192.9MB. Free memory was 128.4MB in the beginning and 106.0MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 45.41ms. Allocated memory is still 192.9MB. Free memory was 106.0MB in the beginning and 104.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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! [2022-11-20 09:29:10,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c9a6146-c750-4bd1-8cb3-b776a07059a1/bin/uautomizer-ug76WZFUDN/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)