./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 8393723b 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_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro --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-8393723 [2022-11-18 21:02:48,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:02:48,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:02:48,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:02:48,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:02:48,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:02:48,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:02:48,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:02:48,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:02:48,733 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:02:48,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:02:48,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:02:48,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:02:48,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:02:48,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:02:48,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:02:48,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:02:48,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:02:48,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:02:48,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:02:48,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:02:48,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:02:48,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:02:48,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:02:48,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:02:48,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:02:48,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:02:48,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:02:48,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:02:48,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:02:48,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:02:48,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:02:48,781 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:02:48,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:02:48,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:02:48,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:02:48,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:02:48,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:02:48,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:02:48,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:02:48,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:02:48,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 21:02:48,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:02:48,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:02:48,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:02:48,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:02:48,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:02:48,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:02:48,823 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:02:48,823 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 21:02:48,824 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 21:02:48,824 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 21:02:48,824 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 21:02:48,824 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 21:02:48,825 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 21:02:48,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:02:48,825 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 21:02:48,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:02:48,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:02:48,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 21:02:48,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 21:02:48,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 21:02:48,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:02:48,827 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 21:02:48,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:02:48,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 21:02:48,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:02:48,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:02:48,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:02:48,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:02:48,830 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 21:02:48,830 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_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 [2022-11-18 21:02:49,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:02:49,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:02:49,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:02:49,203 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:02:49,204 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:02:49,205 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2022-11-18 21:02:49,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/data/8da3eb266/f1223b6091554434a6957c8c145c4f76/FLAGc9c0d635f [2022-11-18 21:02:49,734 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:02:49,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2022-11-18 21:02:49,740 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/data/8da3eb266/f1223b6091554434a6957c8c145c4f76/FLAGc9c0d635f [2022-11-18 21:02:50,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/data/8da3eb266/f1223b6091554434a6957c8c145c4f76 [2022-11-18 21:02:50,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:02:50,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:02:50,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:50,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:02:50,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:02:50,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788c2d85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50, skipping insertion in model container [2022-11-18 21:02:50,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:02:50,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:02:50,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:50,408 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:02:50,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:02:50,446 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:02:50,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50 WrapperNode [2022-11-18 21:02:50,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:02:50,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:50,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:02:50,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:02:50,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,480 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2022-11-18 21:02:50,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:02:50,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:02:50,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:02:50,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:02:50,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,499 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:02:50,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:02:50,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:02:50,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:02:50,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (1/1) ... [2022-11-18 21:02:50,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 21:02:50,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:50,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 21:02:50,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 21:02:50,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:02:50,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:02:50,674 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:02:50,676 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:02:50,773 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:02:50,779 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:02:50,779 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 21:02:50,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:50 BoogieIcfgContainer [2022-11-18 21:02:50,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:02:50,782 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 21:02:50,782 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 21:02:50,791 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 21:02:50,792 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 21:02:50,792 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:02:50" (1/3) ... [2022-11-18 21:02:50,792 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e5840ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:02:50, skipping insertion in model container [2022-11-18 21:02:50,793 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 21:02:50,793 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:02:50" (2/3) ... [2022-11-18 21:02:50,793 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e5840ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:02:50, skipping insertion in model container [2022-11-18 21:02:50,793 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 21:02:50,793 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:50" (3/3) ... [2022-11-18 21:02:50,795 INFO L332 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2022-11-18 21:02:50,847 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 21:02:50,847 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 21:02:50,848 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 21:02:50,848 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 21:02:50,848 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 21:02:50,848 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 21:02:50,848 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 21:02:50,848 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 21:02:50,855 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) [2022-11-18 21:02:50,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 21:02:50,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 21:02:50,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 21:02:50,891 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 21:02:50,891 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 21:02:50,892 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 21:02:50,892 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) [2022-11-18 21:02:50,893 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-18 21:02:50,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 21:02:50,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 21:02:50,893 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-18 21:02:50,894 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-18 21:02:50,899 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 [2022-11-18 21:02:50,899 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 [2022-11-18 21:02:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-18 21:02:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:50,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021226927] [2022-11-18 21:02:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:50,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:50,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:02:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:51,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:02:51,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:51,029 INFO L85 PathProgramCache]: Analyzing trace with hash 40830, now seen corresponding path program 1 times [2022-11-18 21:02:51,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:51,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064213354] [2022-11-18 21:02:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:51,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:02:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:51,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:02:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash 28699772, now seen corresponding path program 1 times [2022-11-18 21:02:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:51,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562313043] [2022-11-18 21:02:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:51,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:51,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:02:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:51,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:02:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:51,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:02:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:02:51,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:02:51 BoogieIcfgContainer [2022-11-18 21:02:51,445 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 21:02:51,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 21:02:51,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 21:02:51,446 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 21:02:51,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:02:50" (3/4) ... [2022-11-18 21:02:51,451 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 21:02:51,519 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 21:02:51,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 21:02:51,525 INFO L158 Benchmark]: Toolchain (without parser) took 1367.31ms. Allocated memory is still 115.3MB. Free memory was 75.5MB in the beginning and 57.1MB in the end (delta: 18.3MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-11-18 21:02:51,527 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:02:51,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.73ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 91.0MB in the end (delta: -15.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 21:02:51,529 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.06ms. Allocated memory is still 115.3MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:02:51,530 INFO L158 Benchmark]: Boogie Preprocessor took 19.78ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 88.6MB in the end (delta: 871.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:02:51,531 INFO L158 Benchmark]: RCFGBuilder took 276.79ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 79.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:02:51,533 INFO L158 Benchmark]: BuchiAutomizer took 663.07ms. Allocated memory is still 115.3MB. Free memory was 79.6MB in the beginning and 58.8MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-18 21:02:51,536 INFO L158 Benchmark]: Witness Printer took 77.16ms. Allocated memory is still 115.3MB. Free memory was 58.8MB in the beginning and 57.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 21:02:51,541 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 115.3MB. Free memory is still 91.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.73ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 91.0MB in the end (delta: -15.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.06ms. Allocated memory is still 115.3MB. Free memory was 91.0MB in the beginning and 89.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.78ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 88.6MB in the end (delta: 871.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 276.79ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 79.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 663.07ms. Allocated memory is still 115.3MB. Free memory was 79.6MB in the beginning and 58.8MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 77.16ms. Allocated memory is still 115.3MB. Free memory was 58.8MB in the beginning and 57.1MB in the end (delta: 1.6MB). 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 [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! [2022-11-18 21:02:51,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09a2f32e-72ea-4d07-98e5-3f88d3ef5e74/bin/uautomizer-TMbwUNV5ro/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)