./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c3fed411 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_1.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 6835149c4278fd8af0ce273d8cc15b325ec6738caba22fa2c7b2c4b417fc898f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 18:34:57,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 18:34:57,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 18:34:57,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 18:34:57,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 18:34:57,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 18:34:57,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 18:34:57,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 18:34:57,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 18:34:57,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 18:34:57,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 18:34:57,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 18:34:57,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 18:34:57,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 18:34:57,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 18:34:57,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 18:34:57,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 18:34:57,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 18:34:57,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 18:34:57,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 18:34:57,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 18:34:57,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 18:34:57,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 18:34:57,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 18:34:57,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 18:34:57,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 18:34:57,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 18:34:57,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 18:34:57,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 18:34:57,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 18:34:57,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 18:34:57,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 18:34:57,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 18:34:57,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 18:34:57,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 18:34:57,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 18:34:57,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 18:34:57,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 18:34:57,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 18:34:57,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 18:34:57,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 18:34:57,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-19 18:34:57,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 18:34:57,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 18:34:57,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 18:34:57,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 18:34:57,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 18:34:57,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 18:34:57,474 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 18:34:57,474 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 18:34:57,474 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 18:34:57,475 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 18:34:57,475 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 18:34:57,475 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 18:34:57,476 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 18:34:57,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 18:34:57,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 18:34:57,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 18:34:57,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 18:34:57,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 18:34:57,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 18:34:57,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 18:34:57,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 18:34:57,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 18:34:57,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 18:34:57,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 18:34:57,477 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 18:34:57,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 18:34:57,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 18:34:57,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 18:34:57,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 18:34:57,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 18:34:57,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 18:34:57,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 18:34:57,479 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 18:34:57,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6835149c4278fd8af0ce273d8cc15b325ec6738caba22fa2c7b2c4b417fc898f [2021-12-19 18:34:57,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 18:34:57,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 18:34:57,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 18:34:57,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 18:34:57,697 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 18:34:57,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_1.c [2021-12-19 18:34:57,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93847a98f/cc83458280194fe0a925d774b6725609/FLAG1fe89ffdd [2021-12-19 18:34:58,149 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 18:34:58,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_1.c [2021-12-19 18:34:58,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93847a98f/cc83458280194fe0a925d774b6725609/FLAG1fe89ffdd [2021-12-19 18:34:58,163 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93847a98f/cc83458280194fe0a925d774b6725609 [2021-12-19 18:34:58,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 18:34:58,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 18:34:58,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 18:34:58,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 18:34:58,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 18:34:58,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58b7bacc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58, skipping insertion in model container [2021-12-19 18:34:58,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 18:34:58,181 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 18:34:58,306 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_1.c[333,346] [2021-12-19 18:34:58,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:34:58,323 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 18:34:58,331 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_1.c[333,346] [2021-12-19 18:34:58,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 18:34:58,342 INFO L208 MainTranslator]: Completed translation [2021-12-19 18:34:58,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58 WrapperNode [2021-12-19 18:34:58,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 18:34:58,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 18:34:58,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 18:34:58,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 18:34:58,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,371 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 29 [2021-12-19 18:34:58,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 18:34:58,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 18:34:58,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 18:34:58,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 18:34:58,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 18:34:58,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 18:34:58,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 18:34:58,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 18:34:58,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (1/1) ... [2021-12-19 18:34:58,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 18:34:58,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 18:34:58,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-19 18:34:58,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-19 18:34:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 18:34:58,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 18:34:58,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 18:34:58,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 18:34:58,473 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 18:34:58,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 18:34:58,548 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 18:34:58,553 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 18:34:58,553 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 18:34:58,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:34:58 BoogieIcfgContainer [2021-12-19 18:34:58,554 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 18:34:58,555 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 18:34:58,555 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 18:34:58,558 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 18:34:58,558 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:34:58,558 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 06:34:58" (1/3) ... [2021-12-19 18:34:58,559 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8f7979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:34:58, skipping insertion in model container [2021-12-19 18:34:58,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:34:58,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 06:34:58" (2/3) ... [2021-12-19 18:34:58,559 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8f7979f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 06:34:58, skipping insertion in model container [2021-12-19 18:34:58,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 18:34:58,560 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:34:58" (3/3) ... [2021-12-19 18:34:58,561 INFO L388 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_1.c [2021-12-19 18:34:58,594 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 18:34:58,594 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 18:34:58,594 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 18:34:58,594 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 18:34:58,594 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 18:34:58,594 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 18:34:58,594 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 18:34:58,594 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 18:34:58,603 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) [2021-12-19 18:34:58,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 18:34:58,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:34:58,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:34:58,621 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 18:34:58,622 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:34:58,622 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 18:34:58,622 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) [2021-12-19 18:34:58,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 18:34:58,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 18:34:58,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 18:34:58,628 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 18:34:58,628 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-19 18:34:58,632 INFO L791 eck$LassoCheckResult]: Stem: 4#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); 7#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; 10#L15-2true [2021-12-19 18:34:58,633 INFO L793 eck$LassoCheckResult]: Loop: 10#L15-2true 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; 12#L6true assume !(0 == __VERIFIER_assert_~cond#1); 5#L6-2true assume { :end_inline___VERIFIER_assert } true; 10#L15-2true [2021-12-19 18:34:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:34:58,637 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 18:34:58,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:34:58,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611419580] [2021-12-19 18:34:58,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:34:58,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:34:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:34:58,695 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:34:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:34:58,711 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:34:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:34:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash 40941, now seen corresponding path program 1 times [2021-12-19 18:34:58,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:34:58,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237578561] [2021-12-19 18:34:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:34:58,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:34:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:34:58,719 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:34:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:34:58,723 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:34:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 18:34:58,725 INFO L85 PathProgramCache]: Analyzing trace with hash 28699883, now seen corresponding path program 1 times [2021-12-19 18:34:58,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 18:34:58,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054898483] [2021-12-19 18:34:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 18:34:58,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 18:34:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:34:58,734 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 18:34:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 18:34:58,741 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 18:34:58,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 06:34:58 BoogieIcfgContainer [2021-12-19 18:34:58,949 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 18:34:58,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 18:34:58,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 18:34:58,950 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 18:34:58,950 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 06:34:58" (3/4) ... [2021-12-19 18:34:58,952 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-19 18:34:58,973 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 18:34:58,973 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 18:34:58,974 INFO L158 Benchmark]: Toolchain (without parser) took 807.93ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 68.2MB in the beginning and 88.7MB in the end (delta: -20.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:34:58,975 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 55.5MB in the beginning and 55.5MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:34:58,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.86ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 74.1MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 18:34:58,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.66ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 72.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 18:34:58,976 INFO L158 Benchmark]: Boogie Preprocessor took 14.36ms. Allocated memory is still 98.6MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 990.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:34:58,977 INFO L158 Benchmark]: RCFGBuilder took 167.39ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 63.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 18:34:58,977 INFO L158 Benchmark]: BuchiAutomizer took 394.03ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.7MB in the beginning and 90.2MB in the end (delta: -26.5MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2021-12-19 18:34:58,978 INFO L158 Benchmark]: Witness Printer took 23.34ms. Allocated memory is still 119.5MB. Free memory was 90.2MB in the beginning and 88.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 18:34:58,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 55.5MB in the beginning and 55.5MB in the end (delta: 50.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.86ms. Allocated memory is still 98.6MB. Free memory was 68.0MB in the beginning and 74.1MB in the end (delta: -6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.66ms. Allocated memory is still 98.6MB. Free memory was 74.1MB in the beginning and 72.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.36ms. Allocated memory is still 98.6MB. Free memory was 72.7MB in the beginning and 71.7MB in the end (delta: 990.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 167.39ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 63.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 394.03ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 63.7MB in the beginning and 90.2MB in the end (delta: -26.5MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * Witness Printer took 23.34ms. Allocated memory is still 119.5MB. Free memory was 90.2MB in the beginning and 88.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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 - 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: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int x=0; Loop: [L15] COND TRUE 1 [L17] CALL __VERIFIER_assert(x==0) [L6] COND FALSE !(!(cond)) [L17] RET __VERIFIER_assert(x==0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-19 18:34:59,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)