./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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_2.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 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 15:07:20,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 15:07:20,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 15:07:20,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 15:07:20,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 15:07:20,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 15:07:20,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 15:07:20,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 15:07:20,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 15:07:20,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 15:07:20,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 15:07:20,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 15:07:20,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 15:07:20,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 15:07:20,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 15:07:20,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 15:07:20,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 15:07:20,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 15:07:20,079 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 15:07:20,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 15:07:20,084 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 15:07:20,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 15:07:20,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 15:07:20,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 15:07:20,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 15:07:20,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 15:07:20,096 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 15:07:20,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 15:07:20,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 15:07:20,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 15:07:20,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 15:07:20,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 15:07:20,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 15:07:20,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 15:07:20,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 15:07:20,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 15:07:20,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 15:07:20,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 15:07:20,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 15:07:20,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 15:07:20,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 15:07:20,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 15:07:20,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 15:07:20,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 15:07:20,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 15:07:20,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 15:07:20,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 15:07:20,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 15:07:20,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 15:07:20,141 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 15:07:20,141 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 15:07:20,141 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 15:07:20,142 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 15:07:20,142 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 15:07:20,143 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 15:07:20,143 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 15:07:20,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 15:07:20,143 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 15:07:20,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 15:07:20,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 15:07:20,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 15:07:20,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 15:07:20,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 15:07:20,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 15:07:20,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 15:07:20,146 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 15:07:20,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 15:07:20,146 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 15:07:20,146 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 15:07:20,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 15:07:20,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 15:07:20,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 15:07:20,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 15:07:20,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 15:07:20,148 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 15:07:20,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 [2022-07-23 15:07:20,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 15:07:20,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 15:07:20,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 15:07:20,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 15:07:20,434 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 15:07:20,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_2.c [2022-07-23 15:07:20,494 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8429224/f75b5cb0e42144c092682af6cc59bf0f/FLAGf2aab06de [2022-07-23 15:07:20,849 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 15:07:20,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c [2022-07-23 15:07:20,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8429224/f75b5cb0e42144c092682af6cc59bf0f/FLAGf2aab06de [2022-07-23 15:07:21,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa8429224/f75b5cb0e42144c092682af6cc59bf0f [2022-07-23 15:07:21,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 15:07:21,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 15:07:21,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 15:07:21,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 15:07:21,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 15:07:21,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff42292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21, skipping insertion in model container [2022-07-23 15:07:21,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 15:07:21,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 15:07:21,447 WARN L230 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_2.c[333,346] [2022-07-23 15:07:21,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:07:21,459 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 15:07:21,467 WARN L230 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_2.c[333,346] [2022-07-23 15:07:21,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:07:21,478 INFO L208 MainTranslator]: Completed translation [2022-07-23 15:07:21,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21 WrapperNode [2022-07-23 15:07:21,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 15:07:21,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 15:07:21,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 15:07:21,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 15:07:21,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,504 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 29 [2022-07-23 15:07:21,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 15:07:21,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 15:07:21,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 15:07:21,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 15:07:21,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 15:07:21,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 15:07:21,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 15:07:21,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 15:07:21,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (1/1) ... [2022-07-23 15:07:21,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:07:21,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:07:21,554 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) [2022-07-23 15:07:21,555 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 [2022-07-23 15:07:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 15:07:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 15:07:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 15:07:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 15:07:21,634 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 15:07:21,635 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 15:07:21,730 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 15:07:21,737 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 15:07:21,740 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 15:07:21,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:21 BoogieIcfgContainer [2022-07-23 15:07:21,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 15:07:21,744 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 15:07:21,744 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 15:07:21,747 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 15:07:21,747 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:21,748 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 03:07:21" (1/3) ... [2022-07-23 15:07:21,749 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17beba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:07:21, skipping insertion in model container [2022-07-23 15:07:21,749 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:21,749 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:21" (2/3) ... [2022-07-23 15:07:21,750 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17beba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:07:21, skipping insertion in model container [2022-07-23 15:07:21,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:21,750 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:21" (3/3) ... [2022-07-23 15:07:21,752 INFO L354 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2022-07-23 15:07:21,821 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 15:07:21,822 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 15:07:21,822 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 15:07:21,822 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 15:07:21,822 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 15:07:21,822 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 15:07:21,822 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 15:07:21,823 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 15:07:21,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-07-23 15:07:21,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 15:07:21,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:07:21,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:07:21,852 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:07:21,853 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 15:07:21,853 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 15:07:21,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-07-23 15:07:21,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 15:07:21,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:07:21,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:07:21,856 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:07:21,856 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 15:07:21,861 INFO L752 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1;main_~x~0#1 := 0; 13#L14-2true [2022-07-23 15:07:21,862 INFO L754 eck$LassoCheckResult]: Loop: 13#L14-2true assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 == main_~x~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 10#L6true assume !(0 == __VERIFIER_assert_~cond#1); 4#L6-2true assume { :end_inline___VERIFIER_assert } true; 13#L14-2true [2022-07-23 15:07:21,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:21,870 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 15:07:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:21,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078889313] [2022-07-23 15:07:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:21,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:21,965 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:22,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:22,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:22,009 INFO L85 PathProgramCache]: Analyzing trace with hash 40941, now seen corresponding path program 1 times [2022-07-23 15:07:22,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:22,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041383972] [2022-07-23 15:07:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:22,025 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:22,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:22,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 28699883, now seen corresponding path program 1 times [2022-07-23 15:07:22,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:22,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961222255] [2022-07-23 15:07:22,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:22,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:22,064 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:22,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:22,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 03:07:22 BoogieIcfgContainer [2022-07-23 15:07:22,337 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 15:07:22,337 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 15:07:22,337 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 15:07:22,338 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 15:07:22,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:21" (3/4) ... [2022-07-23 15:07:22,340 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-23 15:07:22,364 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 15:07:22,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 15:07:22,366 INFO L158 Benchmark]: Toolchain (without parser) took 1092.00ms. Allocated memory is still 104.9MB. Free memory was 68.1MB in the beginning and 46.8MB in the end (delta: 21.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-07-23 15:07:22,366 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:22,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.78ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 82.0MB in the end (delta: -14.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-23 15:07:22,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.46ms. Allocated memory is still 104.9MB. Free memory was 82.0MB in the beginning and 80.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:07:22,368 INFO L158 Benchmark]: Boogie Preprocessor took 20.95ms. Allocated memory is still 104.9MB. Free memory was 80.7MB in the beginning and 79.8MB in the end (delta: 911.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:22,368 INFO L158 Benchmark]: RCFGBuilder took 214.54ms. Allocated memory is still 104.9MB. Free memory was 79.8MB in the beginning and 71.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 15:07:22,369 INFO L158 Benchmark]: BuchiAutomizer took 593.07ms. Allocated memory is still 104.9MB. Free memory was 71.5MB in the beginning and 48.3MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-23 15:07:22,369 INFO L158 Benchmark]: Witness Printer took 27.01ms. Allocated memory is still 104.9MB. Free memory was 48.3MB in the beginning and 46.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:07:22,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.78ms. Allocated memory is still 104.9MB. Free memory was 67.8MB in the beginning and 82.0MB in the end (delta: -14.2MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.46ms. Allocated memory is still 104.9MB. Free memory was 82.0MB in the beginning and 80.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.95ms. Allocated memory is still 104.9MB. Free memory was 80.7MB in the beginning and 79.8MB in the end (delta: 911.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 214.54ms. Allocated memory is still 104.9MB. Free memory was 79.8MB in the beginning and 71.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 593.07ms. Allocated memory is still 104.9MB. Free memory was 71.5MB in the beginning and 48.3MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 27.01ms. Allocated memory is still 104.9MB. Free memory was 48.3MB in the beginning and 46.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {x=0, NULL=0, NULL=0, \old(cond)=1, NULL=1, \result=0, cond=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int x=0; Loop: [L14] COND TRUE 1 [L16] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L16] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-23 15:07:22,408 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)