./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.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_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/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 e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 ............................................................................................................................................................................................................................................................................. 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 [2020-11-30 00:31:10,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:31:10,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:31:10,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:31:10,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:31:10,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:31:10,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:31:10,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:31:10,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:31:10,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:31:10,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:31:10,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:31:10,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:31:10,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:31:10,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:31:10,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:31:10,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:31:10,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:31:10,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:31:10,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:31:10,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:31:10,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:31:10,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:31:10,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:31:10,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:31:10,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:31:10,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:31:10,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:31:10,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:31:10,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:31:10,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:31:10,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:31:10,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:31:10,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:31:10,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:31:10,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:31:10,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:31:10,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:31:10,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:31:10,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:31:10,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:31:10,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-30 00:31:10,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:31:10,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:31:10,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:31:10,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:31:10,680 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:31:10,680 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:31:10,680 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:31:10,681 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:31:10,681 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:31:10,681 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:31:10,681 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:31:10,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:31:10,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:31:10,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:31:10,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:31:10,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:31:10,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:31:10,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:31:10,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:31:10,684 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:31:10,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:31:10,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:31:10,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:31:10,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:31:10,685 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:31:10,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:31:10,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:31:10,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:31:10,686 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:31:10,688 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:31:10,688 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_4be6d368-fa9d-466e-a620-8950a30d4875/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 [2020-11-30 00:31:11,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:31:11,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:31:11,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:31:11,092 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:31:11,095 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:31:11,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2020-11-30 00:31:11,231 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/data/2cc20d234/da011dcddcf2445d9b5a9371de73eaf1/FLAG7665f0780 [2020-11-30 00:31:11,734 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:31:11,735 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2020-11-30 00:31:11,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/data/2cc20d234/da011dcddcf2445d9b5a9371de73eaf1/FLAG7665f0780 [2020-11-30 00:31:12,124 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/data/2cc20d234/da011dcddcf2445d9b5a9371de73eaf1 [2020-11-30 00:31:12,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:31:12,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:31:12,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:12,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:31:12,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:31:12,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72cdc8bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12, skipping insertion in model container [2020-11-30 00:31:12,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:31:12,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:31:12,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:12,335 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:31:12,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:12,365 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:31:12,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12 WrapperNode [2020-11-30 00:31:12,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:12,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:12,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:31:12,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:31:12,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:12,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:31:12,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:31:12,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:31:12,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... [2020-11-30 00:31:12,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:31:12,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:31:12,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:31:12,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:31:12,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/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 [2020-11-30 00:31:12,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:31:12,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:31:12,705 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:31:12,705 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 00:31:12,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:12 BoogieIcfgContainer [2020-11-30 00:31:12,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:31:12,709 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:31:12,711 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:31:12,716 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:31:12,717 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:31:12,717 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:31:12" (1/3) ... [2020-11-30 00:31:12,719 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9e5ca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:31:12, skipping insertion in model container [2020-11-30 00:31:12,719 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:31:12,719 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:12" (2/3) ... [2020-11-30 00:31:12,720 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@9e5ca53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:31:12, skipping insertion in model container [2020-11-30 00:31:12,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:31:12,720 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:12" (3/3) ... [2020-11-30 00:31:12,722 INFO L373 chiAutomizerObserver]: Analyzing ICFG NonTerminationSimple7.c [2020-11-30 00:31:12,802 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:31:12,802 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:31:12,803 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:31:12,804 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:31:12,804 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:31:12,804 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:31:12,804 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:31:12,805 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:31:12,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-30 00:31:12,843 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:31:12,844 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:12,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:12,851 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:31:12,851 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:31:12,852 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:31:12,852 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-30 00:31:12,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-30 00:31:12,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:31:12,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:31:12,856 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-30 00:31:12,856 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-30 00:31:12,864 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0;havoc main_~c~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L15true assume 0 == main_~c~0; 7#L16-2true [2020-11-30 00:31:12,865 INFO L796 eck$LassoCheckResult]: Loop: 7#L16-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 + main_~c~0; 7#L16-2true [2020-11-30 00:31:12,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:12,872 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-30 00:31:12,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:12,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450317065] [2020-11-30 00:31:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,958 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:12,982 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:12,984 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2020-11-30 00:31:12,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:12,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496500618] [2020-11-30 00:31:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:12,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:13,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:13,002 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:13,005 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-11-30 00:31:13,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:13,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090504686] [2020-11-30 00:31:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:13,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:13,024 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:13,027 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:13,176 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-11-30 00:31:13,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:31:13 BoogieIcfgContainer [2020-11-30 00:31:13,306 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:31:13,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:31:13,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:31:13,307 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:31:13,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:12" (3/4) ... [2020-11-30 00:31:13,311 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:31:13,349 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4be6d368-fa9d-466e-a620-8950a30d4875/bin/uautomizer/witness.graphml [2020-11-30 00:31:13,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:31:13,351 INFO L168 Benchmark]: Toolchain (without parser) took 1221.24 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 42.2 MB in the beginning and 52.3 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:13,352 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory is still 41.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:13,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.16 ms. Allocated memory is still 77.6 MB. Free memory was 41.9 MB in the beginning and 33.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:13,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.88 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 33.6 MB in the beginning and 78.8 MB in the end (delta: -45.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:13,355 INFO L168 Benchmark]: Boogie Preprocessor took 21.24 ms. Allocated memory is still 98.6 MB. Free memory was 78.8 MB in the beginning and 77.9 MB in the end (delta: 891.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:13,356 INFO L168 Benchmark]: RCFGBuilder took 268.83 ms. Allocated memory is still 98.6 MB. Free memory was 77.9 MB in the beginning and 71.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:13,357 INFO L168 Benchmark]: BuchiAutomizer took 596.66 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 53.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:13,357 INFO L168 Benchmark]: Witness Printer took 42.29 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 52.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:13,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory is still 41.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 227.16 ms. Allocated memory is still 77.6 MB. Free memory was 41.9 MB in the beginning and 33.6 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.88 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 33.6 MB in the beginning and 78.8 MB in the end (delta: -45.3 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.24 ms. Allocated memory is still 98.6 MB. Free memory was 78.8 MB in the beginning and 77.9 MB in the end (delta: 891.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.83 ms. Allocated memory is still 98.6 MB. Free memory was 77.9 MB in the beginning and 71.8 MB in the end (delta: 6.1 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 596.66 ms. Allocated memory is still 98.6 MB. Free memory was 71.2 MB in the beginning and 53.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 42.29 ms. Allocated memory is still 98.6 MB. Free memory was 53.5 MB in the beginning and 52.3 MB in the end (delta: 1.2 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 0.4s. 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: 16]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6910efdb=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@396600a2=0, c=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 16]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int c, x; [L13] x = __VERIFIER_nondet_int() [L14] c = __VERIFIER_nondet_int() [L15] COND TRUE c == 0 Loop: [L16] COND TRUE x >= 0 [L17] x = x + c End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...