./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD --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 ..................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:56:30,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:56:30,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:56:30,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:56:30,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:56:30,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:56:30,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:56:30,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:56:30,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:56:30,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:56:30,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:56:30,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:56:30,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:56:30,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:56:30,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:56:30,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:56:30,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:56:30,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:56:30,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:56:30,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:56:30,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:56:30,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:56:30,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:56:30,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:56:30,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:56:30,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:56:30,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:56:30,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:56:30,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:56:30,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:56:30,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:56:30,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:56:30,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:56:30,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:56:30,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:56:30,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:56:30,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:56:30,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:56:30,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:56:30,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:56:30,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:56:30,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 23:56:30,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:56:30,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:56:30,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:56:30,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:56:30,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:56:30,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:56:30,777 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:56:30,778 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 23:56:30,778 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 23:56:30,779 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 23:56:30,779 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 23:56:30,779 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 23:56:30,780 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 23:56:30,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:56:30,781 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:56:30,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:56:30,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:56:30,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 23:56:30,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 23:56:30,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 23:56:30,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:56:30,783 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 23:56:30,783 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:56:30,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 23:56:30,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:56:30,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:56:30,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:56:30,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:56:30,785 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:56:30,786 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 23:56:30,786 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_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5f52b905489768d11946f99b46b2e235c97efbb56a51bc32b8b274637f7dd5d8 [2021-10-28 23:56:31,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:56:31,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:56:31,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:56:31,122 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:56:31,123 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:56:31,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2021-10-28 23:56:31,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/data/dc850f54a/63ebcd1e08e44f67a21fdb0f79f56304/FLAG29c841d99 [2021-10-28 23:56:31,673 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:56:31,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2021-10-28 23:56:31,681 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/data/dc850f54a/63ebcd1e08e44f67a21fdb0f79f56304/FLAG29c841d99 [2021-10-28 23:56:32,062 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/data/dc850f54a/63ebcd1e08e44f67a21fdb0f79f56304 [2021-10-28 23:56:32,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:56:32,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:56:32,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:56:32,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:56:32,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:56:32,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2d394d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32, skipping insertion in model container [2021-10-28 23:56:32,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:56:32,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:56:32,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:56:32,397 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:56:32,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:56:32,434 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:56:32,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32 WrapperNode [2021-10-28 23:56:32,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:56:32,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:56:32,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:56:32,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:56:32,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:56:32,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:56:32,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:56:32,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:56:32,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:56:32,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:56:32,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:56:32,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:56:32,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (1/1) ... [2021-10-28 23:56:32,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 23:56:32,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:56:32,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 23:56:32,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 23:56:32,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:56:32,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:56:32,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:56:32,764 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-28 23:56:32,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:56:32 BoogieIcfgContainer [2021-10-28 23:56:32,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:56:32,767 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 23:56:32,767 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 23:56:32,771 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 23:56:32,772 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:56:32,772 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 11:56:32" (1/3) ... [2021-10-28 23:56:32,773 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d2e866c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:56:32, skipping insertion in model container [2021-10-28 23:56:32,774 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:56:32,774 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:56:32" (2/3) ... [2021-10-28 23:56:32,774 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d2e866c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 11:56:32, skipping insertion in model container [2021-10-28 23:56:32,775 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 23:56:32,775 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:56:32" (3/3) ... [2021-10-28 23:56:32,776 INFO L389 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2021-10-28 23:56:32,823 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 23:56:32,824 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 23:56:32,824 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 23:56:32,824 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 23:56:32,824 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 23:56:32,825 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 23:56:32,825 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 23:56:32,825 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 23:56:32,839 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:32,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:56:32,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:56:32,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:56:32,882 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:56:32,882 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:56:32,882 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 23:56:32,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:56:32,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-28 23:56:32,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 23:56:32,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 23:56:32,885 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-28 23:56:32,885 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-28 23:56:32,892 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L13-2true [2021-10-28 23:56:32,892 INFO L793 eck$LassoCheckResult]: Loop: 7#L13-2true assume !!(0 != main_~y~0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 4#L17true assume main_~x~0 <= 0 || main_~y~0 <= 0;main_~y~0 := 0; 10#L23-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 7#L13-2true [2021-10-28 23:56:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-28 23:56:32,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:32,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326575078] [2021-10-28 23:56:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:32,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:33,026 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:33,047 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:33,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:33,051 INFO L85 PathProgramCache]: Analyzing trace with hash 39837, now seen corresponding path program 1 times [2021-10-28 23:56:33,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:33,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142812117] [2021-10-28 23:56:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:33,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:33,082 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:33,093 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:33,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:56:33,096 INFO L85 PathProgramCache]: Analyzing trace with hash 963358, now seen corresponding path program 1 times [2021-10-28 23:56:33,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:56:33,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099557684] [2021-10-28 23:56:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:56:33,102 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:56:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:33,117 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:56:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:56:33,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:56:33,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 11:56:33 BoogieIcfgContainer [2021-10-28 23:56:33,329 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 23:56:33,330 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:56:33,331 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:56:33,331 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:56:33,331 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:56:32" (3/4) ... [2021-10-28 23:56:33,335 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 23:56:33,387 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:56:33,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:56:33,389 INFO L168 Benchmark]: Toolchain (without parser) took 1321.89 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 45.6 MB in the beginning and 47.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:33,390 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 61.8 MB in the beginning and 61.8 MB in the end (delta: 35.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:56:33,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.01 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 45.4 MB in the beginning and 77.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:33,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.75 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:56:33,392 INFO L168 Benchmark]: Boogie Preprocessor took 21.61 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:33,393 INFO L168 Benchmark]: RCFGBuilder took 272.76 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 67.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:33,394 INFO L168 Benchmark]: BuchiAutomizer took 562.34 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 49.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:33,395 INFO L168 Benchmark]: Witness Printer took 57.34 ms. Allocated memory is still 100.7 MB. Free memory was 49.2 MB in the beginning and 47.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:56:33,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory was 61.8 MB in the beginning and 61.8 MB in the end (delta: 35.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 367.01 ms. Allocated memory was 81.8 MB in the beginning and 100.7 MB in the end (delta: 18.9 MB). Free memory was 45.4 MB in the beginning and 77.9 MB in the end (delta: -32.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.75 ms. Allocated memory is still 100.7 MB. Free memory was 77.9 MB in the beginning and 76.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.61 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 272.76 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 67.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 562.34 ms. Allocated memory is still 100.7 MB. Free memory was 67.4 MB in the beginning and 49.2 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 57.34 ms. Allocated memory is still 100.7 MB. Free memory was 49.2 MB in the beginning and 47.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {xtmp=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2d925234=0, tmp=-1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@f30944d=0, x=-1, y=-1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE y != 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:56:33,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb29d7e6-bdc0-452a-b642-c0d2919ea115/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...