./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/xor-01-false.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/xor-01-false.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8 --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 2c513ce74590e6cb0704f3ffcd99d381485eec77314e047b28e9d8c5ce60c589 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:10:37,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:10:37,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:10:37,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:10:37,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:10:37,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:10:37,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:10:37,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:10:37,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:10:37,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:10:37,748 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:10:37,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:10:37,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:10:37,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:10:37,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:10:37,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:10:37,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:10:37,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:10:37,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:10:37,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:10:37,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:10:37,756 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:10:37,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:10:37,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:10:37,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:10:37,759 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:10:37,759 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:10:37,760 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:10:37,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:10:37,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:10:37,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:10:37,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:10:37,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:10:37,763 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:10:37,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:10:37,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:10:37,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:10:37,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:10:37,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:10:37,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:10:37,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:10:37,766 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 21:10:37,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:10:37,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:10:37,780 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:10:37,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:10:37,786 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:10:37,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:10:37,786 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:10:37,786 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 21:10:37,786 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 21:10:37,786 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 21:10:37,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 21:10:37,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 21:10:37,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 21:10:37,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:10:37,788 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 21:10:37,788 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:10:37,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 21:10:37,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:10:37,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:10:37,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:10:37,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:10:37,789 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 21:10:37,789 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_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c513ce74590e6cb0704f3ffcd99d381485eec77314e047b28e9d8c5ce60c589 [2022-12-13 21:10:37,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:10:37,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:10:37,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:10:37,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:10:37,972 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:10:37,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-bwb/xor-01-false.c [2022-12-13 21:10:40,542 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:10:40,687 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:10:40,688 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/sv-benchmarks/c/termination-bwb/xor-01-false.c [2022-12-13 21:10:40,692 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/data/0cbe6443e/527a60ace0c84e46ace41faaa9d6491e/FLAGb8163a00a [2022-12-13 21:10:40,702 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/data/0cbe6443e/527a60ace0c84e46ace41faaa9d6491e [2022-12-13 21:10:40,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:10:40,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:10:40,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:10:40,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:10:40,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:10:40,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ededd63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40, skipping insertion in model container [2022-12-13 21:10:40,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:10:40,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:10:40,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:10:40,848 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:10:40,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:10:40,867 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:10:40,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40 WrapperNode [2022-12-13 21:10:40,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:10:40,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:10:40,868 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:10:40,868 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:10:40,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,889 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 32 [2022-12-13 21:10:40,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:10:40,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:10:40,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:10:40,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:10:40,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,902 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:10:40,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:10:40,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:10:40,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:10:40,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (1/1) ... [2022-12-13 21:10:40,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:40,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:40,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:40,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 21:10:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:10:40,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:10:41,002 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:10:41,004 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:10:41,059 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:10:41,065 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:10:41,065 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 21:10:41,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:10:41 BoogieIcfgContainer [2022-12-13 21:10:41,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:10:41,068 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 21:10:41,068 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 21:10:41,071 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 21:10:41,071 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:10:41,071 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 09:10:40" (1/3) ... [2022-12-13 21:10:41,072 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@96cf50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:10:41, skipping insertion in model container [2022-12-13 21:10:41,072 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:10:41,072 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:10:40" (2/3) ... [2022-12-13 21:10:41,072 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@96cf50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:10:41, skipping insertion in model container [2022-12-13 21:10:41,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:10:41,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:10:41" (3/3) ... [2022-12-13 21:10:41,074 INFO L332 chiAutomizerObserver]: Analyzing ICFG xor-01-false.c [2022-12-13 21:10:41,114 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 21:10:41,114 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 21:10:41,114 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 21:10:41,114 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 21:10:41,115 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 21:10:41,115 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 21:10:41,115 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 21:10:41,115 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 21:10:41,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:41,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 21:10:41,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:10:41,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:10:41,136 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 21:10:41,136 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:10:41,136 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 21:10:41,136 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:41,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 21:10:41,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:10:41,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:10:41,137 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 21:10:41,138 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 21:10:41,143 INFO L748 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 6#L18-2true [2022-12-13 21:10:41,143 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 > 0); 3#L18true assume !(main_~a~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1;main_~a~0#1 := 1; 6#L18-2true [2022-12-13 21:10:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:41,148 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-12-13 21:10:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:41,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302460325] [2022-12-13 21:10:41,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:41,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1335, now seen corresponding path program 1 times [2022-12-13 21:10:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:41,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061574446] [2022-12-13 21:10:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:41,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash 925817, now seen corresponding path program 1 times [2022-12-13 21:10:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:41,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400180507] [2022-12-13 21:10:41,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:41,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:41,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:41,307 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:10:41,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:10:41,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:10:41,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:10:41,307 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:10:41,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:10:41,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:10:41,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01-false.c_Iteration1_Loop [2022-12-13 21:10:41,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:10:41,308 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:10:41,319 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,331 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,375 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:10:41,376 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:10:41,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:41,379 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:41,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 21:10:41,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:10:41,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:41,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:10:41,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:41,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:41,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 21:10:41,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:10:41,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:41,424 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:10:41,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 21:10:41,427 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:10:41,427 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:10:41,427 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:10:41,427 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:10:41,427 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:10:41,427 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,428 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:10:41,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:10:41,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01-false.c_Iteration1_Loop [2022-12-13 21:10:41,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:10:41,428 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:10:41,430 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,436 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,465 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:10:41,469 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:10:41,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:41,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:41,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 21:10:41,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:10:41,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:10:41,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:10:41,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:10:41,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:10:41,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:10:41,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:10:41,488 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:10:41,490 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:10:41,496 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 21:10:41,496 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 21:10:41,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:41,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:41,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 21:10:41,525 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:10:41,525 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:10:41,525 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:10:41,525 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = -1*ULTIMATE.start_main_~a~0#1 Supporting invariants [] [2022-12-13 21:10:41,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 21:10:41,531 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:10:41,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:41,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 21:10:41,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:10:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:10:41,569 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:10:41,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:10:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:10:41,599 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-12-13 21:10:41,601 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:41,637 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) Result 38 states and 55 transitions. Complement of second has 6 states. [2022-12-13 21:10:41,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 21:10:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:41,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2022-12-13 21:10:41,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 2 letters. Loop has 2 letters. [2022-12-13 21:10:41,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:10:41,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 4 letters. Loop has 2 letters. [2022-12-13 21:10:41,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:10:41,647 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 2 letters. Loop has 4 letters. [2022-12-13 21:10:41,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:10:41,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2022-12-13 21:10:41,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 21:10:41,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2022-12-13 21:10:41,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-12-13 21:10:41,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-12-13 21:10:41,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-12-13 21:10:41,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:10:41,655 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-12-13 21:10:41,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-12-13 21:10:41,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-12-13 21:10:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:10:41,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 21:10:41,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-12-13 21:10:41,682 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-12-13 21:10:41,682 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-12-13 21:10:41,683 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 21:10:41,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-12-13 21:10:41,683 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 21:10:41,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:10:41,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:10:41,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 21:10:41,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 21:10:41,684 INFO L748 eck$LassoCheckResult]: Stem: 94#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 95#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 96#L18-2 assume !!(main_~x~0#1 > 0); 85#L18 assume main_~a~0#1 >= 0; 86#L20 main_#t~nondet2#1 := 1; 92#L20-6 [2022-12-13 21:10:41,684 INFO L750 eck$LassoCheckResult]: Loop: 92#L20-6 main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 + main_~a~0#1; 89#L18-2 assume !!(main_~x~0#1 > 0); 90#L18 assume main_~a~0#1 >= 0; 97#L20 main_#t~nondet2#1 := 1; 92#L20-6 [2022-12-13 21:10:41,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash 28699755, now seen corresponding path program 1 times [2022-12-13 21:10:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:41,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569648478] [2022-12-13 21:10:41,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:41,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1858064, now seen corresponding path program 1 times [2022-12-13 21:10:41,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:41,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354089443] [2022-12-13 21:10:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:41,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:10:41,702 INFO L85 PathProgramCache]: Analyzing trace with hash 584188282, now seen corresponding path program 1 times [2022-12-13 21:10:41,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:10:41,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322545774] [2022-12-13 21:10:41,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:10:41,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:10:41,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:10:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:10:41,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:10:41,735 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:10:41,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:10:41,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:10:41,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:10:41,736 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:10:41,736 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,736 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:10:41,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:10:41,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01-false.c_Iteration2_Loop [2022-12-13 21:10:41,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:10:41,736 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:10:41,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,769 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:10:41,769 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:10:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:41,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:41,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 21:10:41,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:10:41,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:41,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 21:10:41,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:41,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:41,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 21:10:41,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:10:41,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:41,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:10:41,942 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=4, ULTIMATE.start_main_#t~nondet2#1=1} Honda state: {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=4, ULTIMATE.start_main_#t~nondet2#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=1, ULTIMATE.start_main_~a~0#1=0, ULTIMATE.start_main_#t~nondet2#1=0}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=1, ULTIMATE.start_main_#t~nondet2#1=0}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_~a~0#1=-4, ULTIMATE.start_main_#t~nondet2#1=0}] Lambdas: [1, 4, 0] Nus: [0, 1] [2022-12-13 21:10:41,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 21:10:41,963 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:10:41,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:10:41,963 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:10:41,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:10:41,963 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:10:41,963 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:41,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:10:41,963 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:10:41,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01-false.c_Iteration2_Lasso [2022-12-13 21:10:41,964 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:10:41,964 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:10:41,965 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,967 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,978 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,980 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:41,981 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:10:42,020 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:10:42,020 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:10:42,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:42,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:42,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:42,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 21:10:42,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:10:42,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:42,035 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:10:42,035 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:10:42,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 21:10:42,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:42,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:42,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:42,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 21:10:42,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:10:42,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:42,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 21:10:42,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:42,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:42,057 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:42,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 21:10:42,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:10:42,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:42,113 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:10:42,113 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_#t~nondet2#1=0, ULTIMATE.start_main_~a~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=16, ULTIMATE.start_main_#t~nondet2#1=1, ULTIMATE.start_main_~a~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_#t~nondet2#1=0, ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~x~0#1=0, ULTIMATE.start_main_#t~nondet2#1=0, ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~x~0#1=1, ULTIMATE.start_main_#t~nondet2#1=0, ULTIMATE.start_main_~a~0#1=0}] Lambdas: [8, 15, 1] Nus: [1, 0] [2022-12-13 21:10:42,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 21:10:42,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:42,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:42,118 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:42,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 21:10:42,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:10:42,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:42,132 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:10:42,132 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:10:42,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-12-13 21:10:42,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:42,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:42,136 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:42,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 21:10:42,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:10:42,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:42,150 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:10:42,150 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:10:42,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 21:10:42,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:10:42,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:10:42,154 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:10:42,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 21:10:42,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:10:42,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:10:42,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:10:42,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~b~0#1=0} Honda state: {ULTIMATE.start_main_~b~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:10:42,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 21:10:42,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 09:10:42 BoogieIcfgContainer [2022-12-13 21:10:42,186 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 21:10:42,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:10:42,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:10:42,186 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:10:42,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:10:41" (3/4) ... [2022-12-13 21:10:42,188 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-12-13 21:10:42,208 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:10:42,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:10:42,209 INFO L158 Benchmark]: Toolchain (without parser) took 1503.55ms. Allocated memory is still 159.4MB. Free memory was 119.6MB in the beginning and 102.4MB in the end (delta: 17.1MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2022-12-13 21:10:42,209 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:10:42,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.62ms. Allocated memory is still 159.4MB. Free memory was 119.1MB in the beginning and 110.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 21:10:42,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.17ms. Allocated memory is still 159.4MB. Free memory was 110.1MB in the beginning and 108.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:10:42,210 INFO L158 Benchmark]: Boogie Preprocessor took 13.98ms. Allocated memory is still 159.4MB. Free memory was 108.6MB in the beginning and 107.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:10:42,210 INFO L158 Benchmark]: RCFGBuilder took 162.75ms. Allocated memory is still 159.4MB. Free memory was 107.5MB in the beginning and 99.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 21:10:42,210 INFO L158 Benchmark]: BuchiAutomizer took 1118.33ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 103.5MB in the end (delta: -4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:10:42,211 INFO L158 Benchmark]: Witness Printer took 22.08ms. Allocated memory is still 159.4MB. Free memory was 103.5MB in the beginning and 102.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:10:42,212 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.62ms. Allocated memory is still 159.4MB. Free memory was 119.1MB in the beginning and 110.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.17ms. Allocated memory is still 159.4MB. Free memory was 110.1MB in the beginning and 108.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.98ms. Allocated memory is still 159.4MB. Free memory was 108.6MB in the beginning and 107.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 162.75ms. Allocated memory is still 159.4MB. Free memory was 107.5MB in the beginning and 99.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1118.33ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 103.5MB in the end (delta: -4.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 22.08ms. Allocated memory is still 159.4MB. Free memory was 103.5MB in the beginning and 102.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * a and consists of 4 locations. The remainder module has 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp76 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf92 smp100 dnf100 smp100 tf108 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 55ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - GeometricNonTerminationArgumentResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {x=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@6ebc3229=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2da809af=0, a=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27987351=0, b=0} State at position 1 is {x=16, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@6ebc3229=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2da809af=0, a=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27987351=0, b=0} For i>1, the state at position i is {x=16 + sum_{k=0}^i 1, org.eclipse.cdt.internal.core.dom.parser.c.CASTBinaryExpression@6ebc3229=1 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2da809af=0 + sum_{k=0}^i 0, a=1 + sum_{k=0}^i 0, \result=0 + sum_{k=0}^i 0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@27987351=0 + sum_{k=0}^i 0, b=0 + sum_{k=0}^i 0} - StatisticsResult: NonterminationArgumentStatistics Unbounded Execution 1GEVs Lambdas: [8, 15, 1] Mus: [1, 0] - NonterminatingLassoResult [Line: 18]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int a, b, x; [L14] a = __VERIFIER_nondet_int() [L15] x = __VERIFIER_nondet_int() [L16] b = 0 [L17] COND TRUE x>0 [L18] COND TRUE a >= 0 [L20] a = 0^1 Loop: [L20] a = 0^1 [L21] x= x+a [L17] COND TRUE x>0 [L18] COND TRUE a >= 0 [L20] a = 0^1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-12-13 21:10:42,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c432e5f4-9e85-4de3-9c86-6478d26a390f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)