./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 6c24879c 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-?-6c24879 [2022-07-13 03:59:03,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:59:03,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:59:03,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:59:03,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:59:03,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:59:03,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:59:03,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:59:03,358 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:59:03,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:59:03,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:59:03,363 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:59:03,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:59:03,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:59:03,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:59:03,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:59:03,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:59:03,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:59:03,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:59:03,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:59:03,386 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:59:03,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:59:03,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:59:03,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:59:03,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:59:03,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:59:03,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:59:03,396 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:59:03,396 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:59:03,397 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:59:03,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:59:03,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:59:03,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:59:03,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:59:03,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:59:03,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:59:03,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:59:03,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:59:03,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:59:03,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:59:03,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:59:03,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:59:03,410 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-13 03:59:03,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:59:03,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:59:03,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:59:03,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:59:03,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:59:03,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:59:03,443 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:59:03,444 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:59:03,444 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:59:03,445 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:59:03,445 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:59:03,445 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:59:03,445 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:59:03,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:59:03,446 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 03:59:03,446 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:59:03,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:59:03,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 03:59:03,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:59:03,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:59:03,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:59:03,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:59:03,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 03:59:03,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:59:03,448 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:59:03,448 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:59:03,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:59:03,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:59:03,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:59:03,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:59:03,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:59:03,450 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:59:03,451 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2285a0532f76c71ed3da856eea9f62f11be9df4ff1d205bf57c17e8ec94f6df8 [2022-07-13 03:59:03,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:59:03,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:59:03,709 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:59:03,710 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:59:03,711 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:59:03,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_2.c [2022-07-13 03:59:03,773 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8f8abce/77d020245a594fb4ae63b88271c6c0ed/FLAGb969d46d1 [2022-07-13 03:59:04,150 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:59:04,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_2.c [2022-07-13 03:59:04,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8f8abce/77d020245a594fb4ae63b88271c6c0ed/FLAGb969d46d1 [2022-07-13 03:59:04,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f8f8abce/77d020245a594fb4ae63b88271c6c0ed [2022-07-13 03:59:04,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:59:04,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:59:04,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:59:04,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:59:04,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:59:04,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120e8c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04, skipping insertion in model container [2022-07-13 03:59:04,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:59:04,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:59:04,293 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] [2022-07-13 03:59:04,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:59:04,303 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:59:04,313 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] [2022-07-13 03:59:04,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:59:04,325 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:59:04,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04 WrapperNode [2022-07-13 03:59:04,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:59:04,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:59:04,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:59:04,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:59:04,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,352 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 29 [2022-07-13 03:59:04,353 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:59:04,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:59:04,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:59:04,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:59:04,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:59:04,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:59:04,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:59:04,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:59:04,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (1/1) ... [2022-07-13 03:59:04,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:59:04,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:59:04,404 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) [2022-07-13 03:59:04,439 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 [2022-07-13 03:59:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 03:59:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:59:04,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:59:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 03:59:04,511 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:59:04,519 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:59:04,584 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:59:04,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:59:04,590 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 03:59:04,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:59:04 BoogieIcfgContainer [2022-07-13 03:59:04,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:59:04,593 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:59:04,594 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:59:04,596 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:59:04,597 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:59:04,597 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:59:04" (1/3) ... [2022-07-13 03:59:04,598 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e19e299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:59:04, skipping insertion in model container [2022-07-13 03:59:04,598 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:59:04,598 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:59:04" (2/3) ... [2022-07-13 03:59:04,598 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e19e299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:59:04, skipping insertion in model container [2022-07-13 03:59:04,599 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:59:04,599 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:59:04" (3/3) ... [2022-07-13 03:59:04,600 INFO L354 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_2.c [2022-07-13 03:59:04,645 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:59:04,645 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:59:04,645 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:59:04,645 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:59:04,645 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:59:04,645 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:59:04,645 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:59:04,646 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:59:04,649 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) [2022-07-13 03:59:04,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-13 03:59:04,663 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:59:04,663 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:59:04,667 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:59:04,667 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:59:04,668 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:59:04,668 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) [2022-07-13 03:59:04,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-13 03:59:04,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:59:04,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:59:04,669 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:59:04,670 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:59:04,675 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 [2022-07-13 03:59:04,675 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 [2022-07-13 03:59:04,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:59:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:59:04,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:59:04,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019652193] [2022-07-13 03:59:04,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:59:04,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:59:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:59:04,772 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:59:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:59:04,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:59:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:59:04,827 INFO L85 PathProgramCache]: Analyzing trace with hash 40941, now seen corresponding path program 1 times [2022-07-13 03:59:04,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:59:04,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725485130] [2022-07-13 03:59:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:59:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:59:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:59:04,844 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:59:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:59:04,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:59:04,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:59:04,856 INFO L85 PathProgramCache]: Analyzing trace with hash 28699883, now seen corresponding path program 1 times [2022-07-13 03:59:04,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:59:04,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116616606] [2022-07-13 03:59:04,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:59:04,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:59:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:59:04,875 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:59:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:59:04,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:59:05,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:59:05 BoogieIcfgContainer [2022-07-13 03:59:05,139 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:59:05,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:59:05,140 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:59:05,140 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:59:05,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:59:04" (3/4) ... [2022-07-13 03:59:05,142 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-13 03:59:05,168 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 03:59:05,169 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:59:05,170 INFO L158 Benchmark]: Toolchain (without parser) took 997.46ms. Allocated memory is still 96.5MB. Free memory was 59.2MB in the beginning and 46.7MB in the end (delta: 12.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-07-13 03:59:05,171 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:59:05,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.21ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 49.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:59:05,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.21ms. Allocated memory is still 96.5MB. Free memory was 49.6MB in the beginning and 48.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:59:05,172 INFO L158 Benchmark]: Boogie Preprocessor took 16.77ms. Allocated memory is still 96.5MB. Free memory was 48.2MB in the beginning and 47.2MB in the end (delta: 944.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:59:05,173 INFO L158 Benchmark]: RCFGBuilder took 221.40ms. Allocated memory is still 96.5MB. Free memory was 47.2MB in the beginning and 71.3MB in the end (delta: -24.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-07-13 03:59:05,177 INFO L158 Benchmark]: BuchiAutomizer took 545.36ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 48.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-13 03:59:05,178 INFO L158 Benchmark]: Witness Printer took 29.37ms. Allocated memory is still 96.5MB. Free memory was 48.3MB in the beginning and 46.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:59:05,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 153.21ms. Allocated memory is still 96.5MB. Free memory was 59.0MB in the beginning and 49.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.21ms. Allocated memory is still 96.5MB. Free memory was 49.6MB in the beginning and 48.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.77ms. Allocated memory is still 96.5MB. Free memory was 48.2MB in the beginning and 47.2MB in the end (delta: 944.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 221.40ms. Allocated memory is still 96.5MB. Free memory was 47.2MB in the beginning and 71.3MB in the end (delta: -24.1MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 545.36ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 48.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 29.37ms. Allocated memory is still 96.5MB. Free memory was 48.3MB in the beginning and 46.7MB in the end (delta: 1.6MB). 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 0.4s 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! [2022-07-13 03:59:05,221 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)