./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/xor-01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/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_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/xor-01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/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_e71f9eea-94dc-408c-acba-43d509794ad2/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 6748276207b055f086b7e803489fe8020fc54faaccf8e7b513ddf6b7ff856d91 --- 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 10:56:35,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 10:56:35,511 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 10:56:35,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 10:56:35,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 10:56:35,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 10:56:35,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 10:56:35,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 10:56:35,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 10:56:35,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 10:56:35,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 10:56:35,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 10:56:35,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 10:56:35,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 10:56:35,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 10:56:35,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 10:56:35,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 10:56:35,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 10:56:35,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 10:56:35,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 10:56:35,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 10:56:35,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 10:56:35,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 10:56:35,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 10:56:35,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 10:56:35,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 10:56:35,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 10:56:35,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 10:56:35,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 10:56:35,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 10:56:35,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 10:56:35,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 10:56:35,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 10:56:35,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 10:56:35,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 10:56:35,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 10:56:35,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 10:56:35,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 10:56:35,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 10:56:35,558 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 10:56:35,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 10:56:35,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-12-13 10:56:35,586 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 10:56:35,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 10:56:35,590 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 10:56:35,590 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 10:56:35,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 10:56:35,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 10:56:35,592 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 10:56:35,592 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 10:56:35,592 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 10:56:35,592 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 10:56:35,592 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 10:56:35,592 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 10:56:35,593 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 10:56:35,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 10:56:35,593 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 10:56:35,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 10:56:35,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 10:56:35,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 10:56:35,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 10:56:35,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 10:56:35,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 10:56:35,594 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 10:56:35,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 10:56:35,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 10:56:35,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 10:56:35,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 10:56:35,595 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 10:56:35,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 10:56:35,596 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 10:56:35,596 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_e71f9eea-94dc-408c-acba-43d509794ad2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6748276207b055f086b7e803489fe8020fc54faaccf8e7b513ddf6b7ff856d91 [2022-12-13 10:56:35,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 10:56:35,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 10:56:35,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 10:56:35,802 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 10:56:35,803 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 10:56:35,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-bwb/xor-01.c [2022-12-13 10:56:38,416 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 10:56:38,529 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 10:56:38,530 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/sv-benchmarks/c/termination-bwb/xor-01.c [2022-12-13 10:56:38,534 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/data/c1cb6445c/1c3ce3441b614d32b199401db176fe3f/FLAG917d782b2 [2022-12-13 10:56:38,545 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/data/c1cb6445c/1c3ce3441b614d32b199401db176fe3f [2022-12-13 10:56:38,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 10:56:38,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 10:56:38,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 10:56:38,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 10:56:38,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 10:56:38,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@506639a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38, skipping insertion in model container [2022-12-13 10:56:38,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 10:56:38,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 10:56:38,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:56:38,670 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 10:56:38,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 10:56:38,689 INFO L208 MainTranslator]: Completed translation [2022-12-13 10:56:38,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38 WrapperNode [2022-12-13 10:56:38,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 10:56:38,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 10:56:38,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 10:56:38,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 10:56:38,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,711 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-12-13 10:56:38,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 10:56:38,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 10:56:38,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 10:56:38,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 10:56:38,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,724 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 10:56:38,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 10:56:38,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 10:56:38,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 10:56:38,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (1/1) ... [2022-12-13 10:56:38,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:38,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:38,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:38,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 10:56:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 10:56:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 10:56:38,835 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 10:56:38,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 10:56:38,896 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 10:56:38,902 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 10:56:38,903 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-13 10:56:38,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:38 BoogieIcfgContainer [2022-12-13 10:56:38,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 10:56:38,905 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 10:56:38,905 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 10:56:38,908 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 10:56:38,909 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 10:56:38,909 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 10:56:38" (1/3) ... [2022-12-13 10:56:38,910 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aa2ecef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 10:56:38, skipping insertion in model container [2022-12-13 10:56:38,910 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 10:56:38,910 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:56:38" (2/3) ... [2022-12-13 10:56:38,910 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1aa2ecef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 10:56:38, skipping insertion in model container [2022-12-13 10:56:38,911 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 10:56:38,911 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:38" (3/3) ... [2022-12-13 10:56:38,912 INFO L332 chiAutomizerObserver]: Analyzing ICFG xor-01.c [2022-12-13 10:56:38,959 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 10:56:38,960 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 10:56:38,960 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 10:56:38,960 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 10:56:38,960 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 10:56:38,960 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 10:56:38,960 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 10:56:38,960 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 10:56:38,964 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 10:56:38,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 10:56:38,978 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 10:56:38,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 10:56:38,983 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 10:56:38,983 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 10:56:38,984 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 10:56:38,984 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 10:56:38,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 10:56:38,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 10:56:38,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 10:56:38,985 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-12-13 10:56:38,985 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 10:56:38,992 INFO L748 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 6#L18-2true [2022-12-13 10:56:38,992 INFO L750 eck$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; 6#L18-2true [2022-12-13 10:56:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-12-13 10:56:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:39,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963661867] [2022-12-13 10:56:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:39,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,067 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:39,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:39,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1335, now seen corresponding path program 1 times [2022-12-13 10:56:39,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:39,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926400272] [2022-12-13 10:56:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:39,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,094 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash 925817, now seen corresponding path program 1 times [2022-12-13 10:56:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:39,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625163717] [2022-12-13 10:56:39,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:39,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:39,173 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 10:56:39,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 10:56:39,174 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 10:56:39,174 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 10:56:39,174 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 10:56:39,174 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,174 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 10:56:39,174 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 10:56:39,174 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration1_Loop [2022-12-13 10:56:39,175 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 10:56:39,175 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 10:56:39,191 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 10:56:39,203 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 10:56:39,240 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 10:56:39,241 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 10:56:39,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,245 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 10:56:39,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 10:56:39,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 10:56:39,273 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 10:56:39,274 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=-1} Honda state: {ULTIMATE.start_main_~a~0#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 10:56:39,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 10:56:39,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 10:56:39,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 10:56:39,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 10:56:39,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 10:56:39,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,300 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 10:56:39,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 10:56:39,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 10:56:39,327 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 10:56:39,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 10:56:39,333 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 10:56:39,333 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 10:56:39,333 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 10:56:39,333 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 10:56:39,334 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 10:56:39,334 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,334 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 10:56:39,334 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 10:56:39,334 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration1_Loop [2022-12-13 10:56:39,334 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 10:56:39,334 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 10:56:39,335 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 10:56:39,339 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 10:56:39,361 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 10:56:39,365 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 10:56:39,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,367 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 10:56:39,370 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 10:56:39,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 10:56:39,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 10:56:39,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 10:56:39,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 10:56:39,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 10:56:39,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 10:56:39,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 10:56:39,387 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 10:56:39,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 10:56:39,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 10:56:39,394 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 10:56:39,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 10:56:39,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 10:56:39,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 10:56:39,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 10:56:39,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 10:56:39,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 10:56:39,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 10:56:39,410 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 10:56:39,416 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 10:56:39,417 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 10:56:39,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,448 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 10:56:39,450 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 10:56:39,451 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 10:56:39,451 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 10:56:39,451 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-12-13 10:56:39,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 10:56:39,458 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 10:56:39,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:39,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 10:56:39,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:56:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:39,494 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 10:56:39,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:56:39,510 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 10:56:39,536 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 10:56:39,537 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 10:56:39,573 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 8 states. [2022-12-13 10:56:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 10:56:39,578 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 10:56:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2022-12-13 10:56:39,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 2 letters. [2022-12-13 10:56:39,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:39,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 4 letters. Loop has 2 letters. [2022-12-13 10:56:39,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:39,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 2 letters. Loop has 4 letters. [2022-12-13 10:56:39,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:39,582 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2022-12-13 10:56:39,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 10:56:39,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 14 states and 20 transitions. [2022-12-13 10:56:39,587 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-12-13 10:56:39,587 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-12-13 10:56:39,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-12-13 10:56:39,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 10:56:39,588 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-12-13 10:56:39,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-12-13 10:56:39,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-12-13 10:56:39,605 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 10:56:39,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-12-13 10:56:39,607 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-12-13 10:56:39,607 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-12-13 10:56:39,607 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 10:56:39,607 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-12-13 10:56:39,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-12-13 10:56:39,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 10:56:39,608 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 10:56:39,608 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-12-13 10:56:39,608 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 10:56:39,608 INFO L748 eck$LassoCheckResult]: Stem: 98#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 99#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; 100#L18-2 assume !!(main_~x~0#1 > 0); 89#L18 assume main_~a~0#1 >= 0; 90#L20 main_#t~nondet2#1 := 1; 96#L20-6 [2022-12-13 10:56:39,609 INFO L750 eck$LassoCheckResult]: Loop: 96#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; 93#L18-2 assume !!(main_~x~0#1 > 0); 94#L18 assume main_~a~0#1 >= 0; 101#L20 main_#t~nondet2#1 := 1; 96#L20-6 [2022-12-13 10:56:39,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash 28699755, now seen corresponding path program 1 times [2022-12-13 10:56:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:39,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849387187] [2022-12-13 10:56:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:39,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:39,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1858064, now seen corresponding path program 1 times [2022-12-13 10:56:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:39,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044253822] [2022-12-13 10:56:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash 584188282, now seen corresponding path program 1 times [2022-12-13 10:56:39,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:39,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541086084] [2022-12-13 10:56:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:39,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:39,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:39,666 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 10:56:39,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 10:56:39,666 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 10:56:39,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 10:56:39,666 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 10:56:39,666 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,666 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 10:56:39,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 10:56:39,667 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration2_Loop [2022-12-13 10:56:39,667 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 10:56:39,667 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 10:56:39,668 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 10:56:39,705 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 10:56:39,706 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 10:56:39,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 10:56:39,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 10:56:39,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 10:56:39,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 10:56:39,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:39,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:39,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:39,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 10:56:39,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 10:56:39,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 10:56:40,919 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 10:56:40,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 10:56:40,923 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 10:56:40,923 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 10:56:40,923 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 10:56:40,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 10:56:40,924 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 10:56:40,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:40,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 10:56:40,924 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 10:56:40,924 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration2_Loop [2022-12-13 10:56:40,924 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 10:56:40,924 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 10:56:40,925 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 10:56:40,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 10:56:40,964 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 10:56:40,964 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 10:56:40,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:40,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:40,965 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:40,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 10:56:40,967 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 10:56:40,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 10:56:40,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 10:56:40,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 10:56:40,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 10:56:40,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 10:56:40,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 10:56:40,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 10:56:40,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 10:56:40,993 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 10:56:40,993 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 10:56:40,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:40,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:40,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:40,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 10:56:40,996 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 10:56:40,996 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 10:56:40,996 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 10:56:40,996 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_#t~nondet2#1) = 1*ULTIMATE.start_main_~x~0#1 - 1*ULTIMATE.start_main_#t~nondet2#1 Supporting invariants [] [2022-12-13 10:56:41,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 10:56:41,001 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 10:56:41,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:41,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 10:56:41,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:56:41,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:41,028 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 10:56:41,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:56:41,068 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 10:56:41,069 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-12-13 10:56:41,069 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:56:41,086 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 22 states and 32 transitions. Complement of second has 7 states. [2022-12-13 10:56:41,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 10:56:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 10:56:41,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-12-13 10:56:41,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 4 letters. [2022-12-13 10:56:41,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:41,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2022-12-13 10:56:41,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:41,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 8 letters. [2022-12-13 10:56:41,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:41,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2022-12-13 10:56:41,090 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 10:56:41,090 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 15 states and 20 transitions. [2022-12-13 10:56:41,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-12-13 10:56:41,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-12-13 10:56:41,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2022-12-13 10:56:41,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 10:56:41,091 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2022-12-13 10:56:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2022-12-13 10:56:41,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-12-13 10:56:41,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 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 10:56:41,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2022-12-13 10:56:41,093 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-12-13 10:56:41,093 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2022-12-13 10:56:41,093 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 10:56:41,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2022-12-13 10:56:41,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 10:56:41,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 10:56:41,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 10:56:41,094 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-12-13 10:56:41,094 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-12-13 10:56:41,094 INFO L748 eck$LassoCheckResult]: Stem: 180#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 181#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~a~0#1, main_~b~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~x~0#1;main_~a~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~b~0#1 := 0; 182#L18-2 assume !!(main_~x~0#1 > 0); 179#L18 assume main_~a~0#1 >= 0; 183#L20 main_#t~nondet2#1 := 1; 184#L20-6 main_~a~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_~x~0#1 - main_~a~0#1; 176#L18-2 [2022-12-13 10:56:41,094 INFO L750 eck$LassoCheckResult]: Loop: 176#L18-2 assume !!(main_~x~0#1 > 0); 175#L18 assume !(main_~a~0#1 >= 0);main_~x~0#1 := main_~x~0#1 - 1; 176#L18-2 [2022-12-13 10:56:41,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:41,095 INFO L85 PathProgramCache]: Analyzing trace with hash 889692436, now seen corresponding path program 2 times [2022-12-13 10:56:41,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:41,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765054003] [2022-12-13 10:56:41,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:41,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:41,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:41,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:41,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1335, now seen corresponding path program 2 times [2022-12-13 10:56:41,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:41,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111125183] [2022-12-13 10:56:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:41,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 10:56:41,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 10:56:41,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 10:56:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash 295939466, now seen corresponding path program 1 times [2022-12-13 10:56:41,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 10:56:41,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811453275] [2022-12-13 10:56:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 10:56:41,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 10:56:41,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 10:56:41,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 10:56:41,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811453275] [2022-12-13 10:56:41,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811453275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 10:56:41,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 10:56:41,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 10:56:41,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397536755] [2022-12-13 10:56:41,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 10:56:41,186 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 10:56:41,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 10:56:41,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 10:56:41,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 10:56:41,186 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 10:56:41,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:41,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 10:56:41,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 10:56:41,187 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration3_Loop [2022-12-13 10:56:41,187 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 10:56:41,187 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 10:56:41,187 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 10:56:41,192 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 10:56:41,206 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 10:56:41,207 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 10:56:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:41,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:41,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:41,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 10:56:41,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 10:56:41,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 10:56:41,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 10:56:41,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:41,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:41,226 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:41,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 10:56:41,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 10:56:41,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 10:56:41,253 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 10:56:41,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 10:56:41,257 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 10:56:41,257 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 10:56:41,257 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 10:56:41,257 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 10:56:41,257 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 10:56:41,257 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:41,257 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 10:56:41,257 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 10:56:41,257 INFO L133 ssoRankerPreferences]: Filename of dumped script: xor-01.c_Iteration3_Loop [2022-12-13 10:56:41,257 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 10:56:41,258 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 10:56:41,258 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 10:56:41,263 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 10:56:41,276 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 10:56:41,276 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 10:56:41,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:41,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:41,277 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:41,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 10:56:41,279 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 10:56:41,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 10:56:41,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 10:56:41,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 10:56:41,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 10:56:41,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 10:56:41,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 10:56:41,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 10:56:41,294 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 10:56:41,296 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 10:56:41,297 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 10:56:41,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 10:56:41,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 10:56:41,298 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 10:56:41,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 10:56:41,300 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 10:56:41,300 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 10:56:41,300 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 10:56:41,300 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-12-13 10:56:41,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 10:56:41,304 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 10:56:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 10:56:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:41,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 10:56:41,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:56:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 10:56:41,325 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 10:56:41,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 10:56:41,334 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 10:56:41,334 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-12-13 10:56:41,335 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 10:56:41,345 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 25 states and 33 transitions. Complement of second has 5 states. [2022-12-13 10:56:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-12-13 10:56:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 10:56:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2022-12-13 10:56:41,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2022-12-13 10:56:41,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:41,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2022-12-13 10:56:41,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:41,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2022-12-13 10:56:41,348 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 10:56:41,348 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2022-12-13 10:56:41,349 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-12-13 10:56:41,349 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 25 transitions. [2022-12-13 10:56:41,349 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-12-13 10:56:41,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-12-13 10:56:41,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2022-12-13 10:56:41,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 10:56:41,350 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 25 transitions. [2022-12-13 10:56:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2022-12-13 10:56:41,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-12-13 10:56:41,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 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 10:56:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-12-13 10:56:41,352 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-12-13 10:56:41,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 10:56:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 10:56:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 10:56:41,355 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 10:56:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 10:56:41,374 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-12-13 10:56:41,374 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2022-12-13 10:56:41,375 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 10:56:41,375 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2022-12-13 10:56:41,375 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 10:56:41,375 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 10:56:41,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 10:56:41,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 10:56:41,375 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 10:56:41,375 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 10:56:41,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 10:56:41,376 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 10:56:41,376 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 10:56:41,377 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 10:56:41,377 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 10:56:41,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 10:56:41,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 10:56:41 BoogieIcfgContainer [2022-12-13 10:56:41,383 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 10:56:41,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 10:56:41,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 10:56:41,384 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 10:56:41,385 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:56:38" (3/4) ... [2022-12-13 10:56:41,387 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 10:56:41,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 10:56:41,388 INFO L158 Benchmark]: Toolchain (without parser) took 2840.00ms. Allocated memory is still 163.6MB. Free memory was 120.5MB in the beginning and 102.4MB in the end (delta: 18.1MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-12-13 10:56:41,388 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 163.6MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:56:41,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 141.03ms. Allocated memory is still 163.6MB. Free memory was 120.4MB in the beginning and 111.4MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 10:56:41,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.39ms. Allocated memory is still 163.6MB. Free memory was 111.4MB in the beginning and 109.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:56:41,389 INFO L158 Benchmark]: Boogie Preprocessor took 13.99ms. Allocated memory is still 163.6MB. Free memory was 109.9MB in the beginning and 108.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 10:56:41,389 INFO L158 Benchmark]: RCFGBuilder took 178.11ms. Allocated memory is still 163.6MB. Free memory was 108.6MB in the beginning and 99.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 10:56:41,389 INFO L158 Benchmark]: BuchiAutomizer took 2478.27ms. Allocated memory is still 163.6MB. Free memory was 99.6MB in the beginning and 102.4MB in the end (delta: -2.8MB). Peak memory consumption was 122.3kB. Max. memory is 16.1GB. [2022-12-13 10:56:41,389 INFO L158 Benchmark]: Witness Printer took 3.18ms. Allocated memory is still 163.6MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 10:56:41,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 163.6MB. Free memory is still 129.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 141.03ms. Allocated memory is still 163.6MB. Free memory was 120.4MB in the beginning and 111.4MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.39ms. Allocated memory is still 163.6MB. Free memory was 111.4MB in the beginning and 109.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.99ms. Allocated memory is still 163.6MB. Free memory was 109.9MB in the beginning and 108.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 178.11ms. Allocated memory is still 163.6MB. Free memory was 108.6MB in the beginning and 99.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2478.27ms. Allocated memory is still 163.6MB. Free memory was 99.6MB in the beginning and 102.4MB in the end (delta: -2.8MB). Peak memory consumption was 122.3kB. Max. memory is 16.1GB. * Witness Printer took 3.18ms. Allocated memory is still 163.6MB. Free memory is still 102.4MB. There was no memory consumed. 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x + -1 * aux-a = 0^1-aux and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 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 [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 32 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf92 smp100 dnf100 smp100 tf111 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 10:56:41,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 10:56:41,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 10:56:41,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71f9eea-94dc-408c-acba-43d509794ad2/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 Result: TRUE