./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/while_infinite_loop_3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 32bit --witnessprinter.graph.data.programhash 3aac8fad8f983ba6915be6b6d24065853819d497 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:19:43,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:19:43,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:19:43,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:19:43,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:19:43,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:19:43,490 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:19:43,492 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:19:43,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:19:43,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:19:43,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:19:43,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:19:43,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:19:43,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:19:43,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:19:43,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:19:43,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:19:43,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:19:43,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:19:43,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:19:43,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:19:43,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:19:43,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:19:43,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:19:43,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:19:43,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:19:43,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:19:43,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:19:43,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:19:43,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:19:43,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:19:43,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:19:43,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:19:43,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:19:43,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:19:43,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:19:43,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:19:43,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:19:43,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:19:43,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:19:43,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:19:43,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:19:43,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:19:43,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:19:43,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:19:43,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:19:43,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:19:43,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:19:43,542 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:19:43,543 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:19:43,543 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:19:43,543 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:19:43,543 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:19:43,543 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:19:43,543 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:19:43,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:19:43,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:19:43,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:19:43,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:19:43,545 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:19:43,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:19:43,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:19:43,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:19:43,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:19:43,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:19:43,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:19:43,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:19:43,546 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:19:43,546 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac8fad8f983ba6915be6b6d24065853819d497 [2021-08-27 15:19:43,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:19:43,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:19:43,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:19:43,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:19:43,826 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:19:43,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-08-27 15:19:43,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35d3f50f/f9ad3ba30a584a9aa9606bd5ec63c01e/FLAGdeefd8598 [2021-08-27 15:19:44,160 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:19:44,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-08-27 15:19:44,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35d3f50f/f9ad3ba30a584a9aa9606bd5ec63c01e/FLAGdeefd8598 [2021-08-27 15:19:44,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e35d3f50f/f9ad3ba30a584a9aa9606bd5ec63c01e [2021-08-27 15:19:44,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:19:44,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:19:44,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:19:44,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:19:44,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:19:44,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1f62b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44, skipping insertion in model container [2021-08-27 15:19:44,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:19:44,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:19:44,744 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c[333,346] [2021-08-27 15:19:44,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:19:44,757 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:19:44,766 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_3.c[333,346] [2021-08-27 15:19:44,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:19:44,778 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:19:44,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44 WrapperNode [2021-08-27 15:19:44,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:19:44,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:19:44,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:19:44,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:19:44,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:19:44,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:19:44,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:19:44,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:19:44,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:19:44,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:19:44,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:19:44,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:19:44,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (1/1) ... [2021-08-27 15:19:44,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:19:44,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:19:44,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:19:44,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 15:19:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:19:44,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:19:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:19:44,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:19:45,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:19:45,068 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-27 15:19:45,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:19:45 BoogieIcfgContainer [2021-08-27 15:19:45,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:19:45,070 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:19:45,070 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:19:45,072 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:19:45,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:19:45,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:19:44" (1/3) ... [2021-08-27 15:19:45,073 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50aa8752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:19:45, skipping insertion in model container [2021-08-27 15:19:45,073 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:19:45,073 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:19:44" (2/3) ... [2021-08-27 15:19:45,074 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@50aa8752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:19:45, skipping insertion in model container [2021-08-27 15:19:45,074 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:19:45,074 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:19:45" (3/3) ... [2021-08-27 15:19:45,074 INFO L389 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_3.c [2021-08-27 15:19:45,129 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:19:45,130 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:19:45,130 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:19:45,130 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:19:45,130 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:19:45,130 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:19:45,130 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:19:45,130 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:19:45,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) 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) [2021-08-27 15:19:45,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 15:19:45,149 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:19:45,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:19:45,152 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 15:19:45,152 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 15:19:45,152 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:19:45,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) 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) [2021-08-27 15:19:45,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-08-27 15:19:45,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:19:45,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:19:45,154 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 15:19:45,154 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 15:19:45,158 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~x~0 := 0; 7#L-1true havoc main_#res; 6#L6-2true [2021-08-27 15:19:45,158 INFO L793 eck$LassoCheckResult]: Loop: 6#L6-2true assume !false; 3#L16loopEntrytrue assume false; 14#L16-2true __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 12#L6true assume !(0 == __VERIFIER_assert_~cond); 6#L6-2true [2021-08-27 15:19:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:19:45,164 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-08-27 15:19:45,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:19:45,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705522638] [2021-08-27 15:19:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:19:45,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:19:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,236 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:19:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,259 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:19:45,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:19:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1269327, now seen corresponding path program 1 times [2021-08-27 15:19:45,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:19:45,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790207042] [2021-08-27 15:19:45,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:19:45,262 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:19:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:19:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:19:45,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:19:45,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790207042] [2021-08-27 15:19:45,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790207042] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:19:45,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:19:45,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 15:19:45,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444952929] [2021-08-27 15:19:45,315 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:19:45,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:19:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 15:19:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 15:19:45,328 INFO L87 Difference]: Start difference. First operand has 14 states, 13 states have (on average 1.4615384615384615) 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-08-27 15:19:45,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:19:45,331 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2021-08-27 15:19:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:19:45,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2021-08-27 15:19:45,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 15:19:45,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 6 transitions. [2021-08-27 15:19:45,337 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-08-27 15:19:45,337 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-08-27 15:19:45,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2021-08-27 15:19:45,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:19:45,337 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-08-27 15:19:45,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2021-08-27 15:19:45,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-08-27 15:19:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:19:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-08-27 15:19:45,355 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-08-27 15:19:45,355 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-08-27 15:19:45,356 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:19:45,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2021-08-27 15:19:45,357 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-08-27 15:19:45,357 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:19:45,357 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:19:45,357 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 15:19:45,357 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-08-27 15:19:45,358 INFO L791 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(24);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);~x~0 := 0; 32#L-1 havoc main_#res; 33#L6-2 [2021-08-27 15:19:45,358 INFO L793 eck$LassoCheckResult]: Loop: 33#L6-2 assume !false; 29#L16loopEntry assume !false;~x~0 := 0; 30#L16-2 __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 34#L6 assume !(0 == __VERIFIER_assert_~cond); 33#L6-2 [2021-08-27 15:19:45,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:19:45,360 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-08-27 15:19:45,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:19:45,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44017171] [2021-08-27 15:19:45,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:19:45,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:19:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,388 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:19:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,401 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:19:45,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:19:45,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1271249, now seen corresponding path program 1 times [2021-08-27 15:19:45,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:19:45,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188739892] [2021-08-27 15:19:45,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:19:45,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:19:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,408 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:19:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,412 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:19:45,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:19:45,416 INFO L82 PathProgramCache]: Analyzing trace with hash 889698451, now seen corresponding path program 1 times [2021-08-27 15:19:45,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:19:45,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109527139] [2021-08-27 15:19:45,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:19:45,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:19:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,436 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:19:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:19:45,456 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:19:45,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:19:45 BoogieIcfgContainer [2021-08-27 15:19:45,770 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:19:45,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:19:45,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:19:45,771 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:19:45,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:19:45" (3/4) ... [2021-08-27 15:19:45,773 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-08-27 15:19:45,791 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 15:19:45,791 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:19:45,792 INFO L168 Benchmark]: Toolchain (without parser) took 1185.64 ms. Allocated memory was 48.2 MB in the beginning and 75.5 MB in the end (delta: 27.3 MB). Free memory was 26.7 MB in the beginning and 54.5 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:19:45,793 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:19:45,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.61 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 26.5 MB in the beginning and 45.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:19:45,793 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.29 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 47.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:19:45,794 INFO L168 Benchmark]: Boogie Preprocessor took 28.21 ms. Allocated memory is still 62.9 MB. Free memory was 47.0 MB in the beginning and 45.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:19:45,794 INFO L168 Benchmark]: RCFGBuilder took 223.82 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 34.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 15:19:45,795 INFO L168 Benchmark]: BuchiAutomizer took 700.26 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 34.5 MB in the beginning and 55.6 MB in the end (delta: -21.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:19:45,795 INFO L168 Benchmark]: Witness Printer took 20.28 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 54.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:19:45,797 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 37.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 167.61 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 26.5 MB in the beginning and 45.7 MB in the end (delta: -19.2 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.29 ms. Allocated memory is still 62.9 MB. Free memory was 45.7 MB in the beginning and 47.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.21 ms. Allocated memory is still 62.9 MB. Free memory was 47.0 MB in the beginning and 45.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 223.82 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 34.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 700.26 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 34.5 MB in the beginning and 55.6 MB in the end (delta: -21.1 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 20.28 ms. Allocated memory is still 75.5 MB. Free memory was 55.6 MB in the beginning and 54.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 2 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 7.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 7 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 26]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=29134} State at position 1 is {cond=1, NULL=0, NULL=0, NULL=0, NULL=29135, NULL=0, \result=0, NULL=29137, NULL=29134, \old(cond)=1, NULL=0, x=0, NULL=29136} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 5]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; Loop: [L26] COND TRUE 1 [L16] COND TRUE 1 [L17] x=0 [L6] COND FALSE !(!(cond)) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-08-27 15:19:45,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...