./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/WhileTrue.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 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/termination-crafted/WhileTrue.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 2c915ce64f8b11abacbd175f69c99f9afd8b2edc1142f6db1504c1dcc6414eb1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 14:47:12,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 14:47:12,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 14:47:12,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 14:47:12,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 14:47:12,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 14:47:12,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 14:47:12,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 14:47:12,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 14:47:12,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 14:47:12,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 14:47:12,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 14:47:12,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 14:47:12,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 14:47:12,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 14:47:12,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 14:47:12,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 14:47:12,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 14:47:12,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 14:47:12,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 14:47:12,352 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 14:47:12,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 14:47:12,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 14:47:12,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 14:47:12,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 14:47:12,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 14:47:12,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 14:47:12,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 14:47:12,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 14:47:12,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 14:47:12,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 14:47:12,361 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 14:47:12,362 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 14:47:12,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 14:47:12,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 14:47:12,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 14:47:12,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 14:47:12,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 14:47:12,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 14:47:12,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 14:47:12,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 14:47:12,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 14:47:12,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-14 14:47:12,394 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 14:47:12,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 14:47:12,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 14:47:12,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 14:47:12,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 14:47:12,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 14:47:12,400 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 14:47:12,400 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 14:47:12,401 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 14:47:12,402 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 14:47:12,402 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 14:47:12,402 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 14:47:12,402 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 14:47:12,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 14:47:12,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 14:47:12,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 14:47:12,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 14:47:12,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 14:47:12,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 14:47:12,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 14:47:12,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 14:47:12,404 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 14:47:12,405 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 14:47:12,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 14:47:12,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 14:47:12,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 14:47:12,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 14:47:12,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 14:47:12,408 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 14:47:12,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c915ce64f8b11abacbd175f69c99f9afd8b2edc1142f6db1504c1dcc6414eb1 [2022-07-14 14:47:12,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 14:47:12,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 14:47:12,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 14:47:12,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 14:47:12,672 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 14:47:12,674 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/WhileTrue.c [2022-07-14 14:47:12,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614c53f3c/6e5a7d7afa924bd087e75eb27f45a4b1/FLAG87991db3a [2022-07-14 14:47:13,076 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 14:47:13,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/WhileTrue.c [2022-07-14 14:47:13,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614c53f3c/6e5a7d7afa924bd087e75eb27f45a4b1/FLAG87991db3a [2022-07-14 14:47:13,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614c53f3c/6e5a7d7afa924bd087e75eb27f45a4b1 [2022-07-14 14:47:13,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 14:47:13,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 14:47:13,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 14:47:13,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 14:47:13,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 14:47:13,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d955bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13, skipping insertion in model container [2022-07-14 14:47:13,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 14:47:13,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 14:47:13,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:47:13,243 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 14:47:13,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 14:47:13,269 INFO L208 MainTranslator]: Completed translation [2022-07-14 14:47:13,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13 WrapperNode [2022-07-14 14:47:13,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 14:47:13,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 14:47:13,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 14:47:13,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 14:47:13,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,296 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2022-07-14 14:47:13,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 14:47:13,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 14:47:13,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 14:47:13,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 14:47:13,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 14:47:13,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 14:47:13,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 14:47:13,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 14:47:13,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (1/1) ... [2022-07-14 14:47:13,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 14:47:13,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 14:47:13,342 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) [2022-07-14 14:47:13,349 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 [2022-07-14 14:47:13,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 14:47:13,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 14:47:13,411 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 14:47:13,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 14:47:13,438 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 14:47:13,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 14:47:13,444 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 14:47:13,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:13 BoogieIcfgContainer [2022-07-14 14:47:13,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 14:47:13,446 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 14:47:13,446 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 14:47:13,451 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 14:47:13,451 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:13,452 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 02:47:13" (1/3) ... [2022-07-14 14:47:13,453 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c582ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:47:13, skipping insertion in model container [2022-07-14 14:47:13,453 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:13,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 02:47:13" (2/3) ... [2022-07-14 14:47:13,454 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2c582ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 02:47:13, skipping insertion in model container [2022-07-14 14:47:13,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 14:47:13,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:13" (3/3) ... [2022-07-14 14:47:13,456 INFO L354 chiAutomizerObserver]: Analyzing ICFG WhileTrue.c [2022-07-14 14:47:13,508 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 14:47:13,508 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 14:47:13,508 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 14:47:13,508 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 14:47:13,508 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 14:47:13,508 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 14:47:13,508 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 14:47:13,509 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 14:47:13,511 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:47:13,523 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 14:47:13,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:13,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:13,527 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:47:13,527 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 14:47:13,528 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 14:47:13,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 14:47:13,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-14 14:47:13,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 14:47:13,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 14:47:13,529 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-14 14:47:13,529 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-14 14:47:13,534 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1; 5#L13-2true [2022-07-14 14:47:13,534 INFO L754 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(0 != ~unnamed0~0~true); 5#L13-2true [2022-07-14 14:47:13,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-14 14:47:13,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:13,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836086240] [2022-07-14 14:47:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:13,607 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:13,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:13,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2022-07-14 14:47:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:13,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589324917] [2022-07-14 14:47:13,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:13,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:13,630 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:13,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:13,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 14:47:13,634 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-14 14:47:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 14:47:13,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701137507] [2022-07-14 14:47:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 14:47:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 14:47:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:13,638 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 14:47:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 14:47:13,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 14:47:13,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 02:47:13 BoogieIcfgContainer [2022-07-14 14:47:13,684 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 14:47:13,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 14:47:13,685 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 14:47:13,685 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 14:47:13,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:47:13" (3/4) ... [2022-07-14 14:47:13,688 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-14 14:47:13,715 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-14 14:47:13,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 14:47:13,718 INFO L158 Benchmark]: Toolchain (without parser) took 622.17ms. Allocated memory is still 83.9MB. Free memory was 48.2MB in the beginning and 36.9MB in the end (delta: 11.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-07-14 14:47:13,719 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:13,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.34ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 62.3MB in the end (delta: -14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 14:47:13,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.22ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 61.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:13,721 INFO L158 Benchmark]: Boogie Preprocessor took 15.62ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 60.2MB in the end (delta: 642.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 14:47:13,725 INFO L158 Benchmark]: RCFGBuilder took 130.48ms. Allocated memory is still 83.9MB. Free memory was 59.9MB in the beginning and 53.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-14 14:47:13,726 INFO L158 Benchmark]: BuchiAutomizer took 237.62ms. Allocated memory is still 83.9MB. Free memory was 52.9MB in the beginning and 38.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-14 14:47:13,727 INFO L158 Benchmark]: Witness Printer took 30.64ms. Allocated memory is still 83.9MB. Free memory was 38.2MB in the beginning and 36.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 14:47:13,732 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 64.2MB in the beginning and 64.1MB in the end (delta: 45.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.34ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 62.3MB in the end (delta: -14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.22ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 61.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.62ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 60.2MB in the end (delta: 642.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 130.48ms. Allocated memory is still 83.9MB. Free memory was 59.9MB in the beginning and 53.2MB in the end (delta: 6.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 237.62ms. Allocated memory is still 83.9MB. Free memory was 52.9MB in the beginning and 38.2MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 30.64ms. Allocated memory is still 83.9MB. Free memory was 38.2MB in the beginning and 36.9MB in the end (delta: 1.3MB). 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 0.1s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. 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: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: Loop: [L13] COND TRUE \read(true) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-14 14:47:13,772 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)