./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer --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 f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 .............................................................................................................................................................................................................................................................................. 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 0.2.0-a4ecdab [2020-11-28 03:17:52,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:52,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:52,655 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:52,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:52,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:52,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:52,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:52,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:52,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:52,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:52,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:52,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:52,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:52,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:52,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:52,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:52,689 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:52,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:52,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:52,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:52,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:52,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:52,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:52,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:52,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:52,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:52,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:52,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:52,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:52,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:52,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:52,723 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:52,724 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:52,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:52,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:52,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:52,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:52,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:52,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:52,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:52,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:17:52,756 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:52,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:52,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:52,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:52,758 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:52,758 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:17:52,759 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:17:52,759 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:17:52,759 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:17:52,759 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:17:52,759 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:17:52,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:52,760 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:17:52,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:52,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:52,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:17:52,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:17:52,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:17:52,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:17:52,761 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:17:52,762 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:52,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:17:52,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:52,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:52,763 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:17:52,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:52,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:17:52,763 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:52,764 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:17:52,765 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:17:52,765 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-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f55c3c29f65baba8ba49ec35fe2e62008dfb74b3 [2020-11-28 03:17:53,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:53,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:53,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:53,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:53,112 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:53,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-11-28 03:17:53,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/data/8370e8356/bcbc96d4b7e24737ac2e04230a304124/FLAGb2dd2dbf0 [2020-11-28 03:17:53,738 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:53,738 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-11-28 03:17:53,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/data/8370e8356/bcbc96d4b7e24737ac2e04230a304124/FLAGb2dd2dbf0 [2020-11-28 03:17:54,126 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/data/8370e8356/bcbc96d4b7e24737ac2e04230a304124 [2020-11-28 03:17:54,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:54,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:17:54,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:54,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:54,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:54,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722f1adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54, skipping insertion in model container [2020-11-28 03:17:54,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:54,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:54,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:54,370 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:54,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:54,429 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:54,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54 WrapperNode [2020-11-28 03:17:54,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:54,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:54,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:17:54,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:17:54,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:54,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:54,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:54,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:54,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... [2020-11-28 03:17:54,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:54,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:54,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:54,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:54,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:54,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:54,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:54,742 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:17:54,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:54 BoogieIcfgContainer [2020-11-28 03:17:54,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:54,745 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:17:54,745 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:17:54,749 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:17:54,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:54,750 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:17:54" (1/3) ... [2020-11-28 03:17:54,751 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@757d985d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:54, skipping insertion in model container [2020-11-28 03:17:54,751 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:54,752 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:54" (2/3) ... [2020-11-28 03:17:54,752 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@757d985d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:54, skipping insertion in model container [2020-11-28 03:17:54,752 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:54,752 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:54" (3/3) ... [2020-11-28 03:17:54,754 INFO L373 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2020-11-28 03:17:54,820 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:17:54,820 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:17:54,820 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:17:54,820 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:54,821 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:54,822 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:17:54,822 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:54,822 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:17:54,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:17:54,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:17:54,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:54,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:54,863 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:17:54,863 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:17:54,863 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:17:54,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:17:54,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:17:54,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:54,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:54,866 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:17:54,866 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:17:54,874 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L20true assume main_~y1~0 >= 0 && main_~y2~0 >= 0; 10#L22-2true [2020-11-28 03:17:54,874 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y1~0 != main_~y2~0); 4#L22true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 10#L22-2true [2020-11-28 03:17:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:54,882 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-28 03:17:54,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:54,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062011920] [2020-11-28 03:17:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:54,981 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:54,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:55,013 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:55,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2020-11-28 03:17:55,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:55,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236508374] [2020-11-28 03:17:55,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:55,043 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:55,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:55,055 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:55,068 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2020-11-28 03:17:55,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:55,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206441818] [2020-11-28 03:17:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:55,076 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:55,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:55,097 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:55,259 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2020-11-28 03:17:55,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:17:55 BoogieIcfgContainer [2020-11-28 03:17:55,388 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:17:55,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:55,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:55,389 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:55,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:54" (3/4) ... [2020-11-28 03:17:55,393 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 03:17:55,451 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5b05e354-9f85-4bd0-aa4a-44d0b77b5f74/bin/uautomizer/witness.graphml [2020-11-28 03:17:55,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:55,453 INFO L168 Benchmark]: Toolchain (without parser) took 1322.20 ms. Allocated memory is still 107.0 MB. Free memory was 74.8 MB in the beginning and 54.0 MB in the end (delta: 20.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,454 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 73.4 MB. Free memory was 33.8 MB in the beginning and 33.8 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:55,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.84 ms. Allocated memory is still 107.0 MB. Free memory was 74.6 MB in the beginning and 85.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 107.0 MB. Free memory was 85.4 MB in the beginning and 84.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:55,456 INFO L168 Benchmark]: Boogie Preprocessor took 19.42 ms. Allocated memory is still 107.0 MB. Free memory was 84.4 MB in the beginning and 83.4 MB in the end (delta: 994.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:55,457 INFO L168 Benchmark]: RCFGBuilder took 258.50 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 75.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,462 INFO L168 Benchmark]: BuchiAutomizer took 643.31 ms. Allocated memory is still 107.0 MB. Free memory was 75.0 MB in the beginning and 55.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:55,463 INFO L168 Benchmark]: Witness Printer took 63.01 ms. Allocated memory is still 107.0 MB. Free memory was 55.6 MB in the beginning and 54.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:55,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 73.4 MB. Free memory was 33.8 MB in the beginning and 33.8 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.84 ms. Allocated memory is still 107.0 MB. Free memory was 74.6 MB in the beginning and 85.4 MB in the end (delta: -10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.71 ms. Allocated memory is still 107.0 MB. Free memory was 85.4 MB in the beginning and 84.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.42 ms. Allocated memory is still 107.0 MB. Free memory was 84.4 MB in the beginning and 83.4 MB in the end (delta: 994.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 258.50 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 75.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 643.31 ms. Allocated memory is still 107.0 MB. Free memory was 75.0 MB in the beginning and 55.6 MB in the end (delta: 19.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 63.01 ms. Allocated memory is still 107.0 MB. Free memory was 55.6 MB in the beginning and 54.0 MB in the end (delta: 1.5 MB). There was no memory consumed. 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 0.5s. 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: 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: 21]: 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 {y2=0, y1=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1e792bdd=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ad8fac8=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 21]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int y1, y2; [L18] y1 = __VERIFIER_nondet_int() [L19] y2 = __VERIFIER_nondet_int() [L20] COND TRUE y1 >= 0 && y2 >= 0 Loop: [L21] COND TRUE y1 != y2 [L22] COND TRUE y1 > y2 [L23] y1 = y1 - y2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...