./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loops/while_infinite_loop_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-?-791161d [2022-07-23 15:07:18,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 15:07:18,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 15:07:18,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 15:07:18,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 15:07:18,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 15:07:18,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 15:07:18,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 15:07:18,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 15:07:18,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 15:07:18,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 15:07:18,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 15:07:18,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 15:07:18,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 15:07:18,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 15:07:18,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 15:07:18,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 15:07:18,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 15:07:18,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 15:07:18,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 15:07:18,858 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 15:07:18,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 15:07:18,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 15:07:18,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 15:07:18,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 15:07:18,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 15:07:18,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 15:07:18,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 15:07:18,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 15:07:18,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 15:07:18,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 15:07:18,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 15:07:18,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 15:07:18,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 15:07:18,869 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 15:07:18,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 15:07:18,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 15:07:18,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 15:07:18,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 15:07:18,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 15:07:18,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 15:07:18,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 15:07:18,879 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 15:07:18,903 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 15:07:18,904 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 15:07:18,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 15:07:18,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 15:07:18,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 15:07:18,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 15:07:18,907 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 15:07:18,907 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 15:07:18,907 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 15:07:18,908 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 15:07:18,908 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 15:07:18,908 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 15:07:18,908 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 15:07:18,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 15:07:18,909 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 15:07:18,909 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 15:07:18,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 15:07:18,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 15:07:18,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 15:07:18,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 15:07:18,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 15:07:18,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 15:07:18,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 15:07:18,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 15:07:18,911 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 15:07:18,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 15:07:18,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 15:07:18,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 15:07:18,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 15:07:18,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 15:07:18,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 15:07:18,912 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 15:07:18,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6835149c4278fd8af0ce273d8cc15b325ec6738caba22fa2c7b2c4b417fc898f [2022-07-23 15:07:19,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 15:07:19,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 15:07:19,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 15:07:19,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 15:07:19,175 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 15:07:19,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_1.c [2022-07-23 15:07:19,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445b0eb45/0c2026ee0b1c413a944a4a676a49cd93/FLAG5ad8ab0fb [2022-07-23 15:07:19,642 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 15:07:19,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_1.c [2022-07-23 15:07:19,648 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445b0eb45/0c2026ee0b1c413a944a4a676a49cd93/FLAG5ad8ab0fb [2022-07-23 15:07:19,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/445b0eb45/0c2026ee0b1c413a944a4a676a49cd93 [2022-07-23 15:07:19,670 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 15:07:19,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 15:07:19,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 15:07:19,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 15:07:19,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 15:07:19,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6430dd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19, skipping insertion in model container [2022-07-23 15:07:19,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 15:07:19,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 15:07:19,803 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] [2022-07-23 15:07:19,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:07:19,834 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 15:07:19,842 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] [2022-07-23 15:07:19,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:07:19,854 INFO L208 MainTranslator]: Completed translation [2022-07-23 15:07:19,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19 WrapperNode [2022-07-23 15:07:19,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 15:07:19,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 15:07:19,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 15:07:19,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 15:07:19,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,879 INFO L137 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 29 [2022-07-23 15:07:19,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 15:07:19,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 15:07:19,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 15:07:19,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 15:07:19,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 15:07:19,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 15:07:19,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 15:07:19,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 15:07:19,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (1/1) ... [2022-07-23 15:07:19,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:07:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:07:19,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:07:19,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 15:07:19,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 15:07:19,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 15:07:19,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 15:07:19,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 15:07:20,004 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 15:07:20,005 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 15:07:20,076 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 15:07:20,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 15:07:20,082 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 15:07:20,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:20 BoogieIcfgContainer [2022-07-23 15:07:20,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 15:07:20,085 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 15:07:20,085 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 15:07:20,088 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 15:07:20,088 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:20,088 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 03:07:19" (1/3) ... [2022-07-23 15:07:20,089 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2afe1380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:07:20, skipping insertion in model container [2022-07-23 15:07:20,089 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:20,089 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:07:19" (2/3) ... [2022-07-23 15:07:20,090 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2afe1380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:07:20, skipping insertion in model container [2022-07-23 15:07:20,090 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:07:20,090 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:20" (3/3) ... [2022-07-23 15:07:20,091 INFO L354 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_1.c [2022-07-23 15:07:20,166 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 15:07:20,167 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 15:07:20,167 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 15:07:20,167 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 15:07:20,167 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 15:07:20,167 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 15:07:20,167 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 15:07:20,168 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 15:07:20,171 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 15:07:20,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 15:07:20,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:07:20,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:07:20,190 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:07:20,190 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 15:07:20,190 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 15:07:20,191 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 15:07:20,192 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 15:07:20,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:07:20,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:07:20,192 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 15:07:20,193 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 15:07:20,198 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); 6#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; 9#L15-2true [2022-07-23 15:07:20,198 INFO L754 eck$LassoCheckResult]: Loop: 9#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; 11#L6true assume !(0 == __VERIFIER_assert_~cond#1); 4#L6-2true assume { :end_inline___VERIFIER_assert } true; 9#L15-2true [2022-07-23 15:07:20,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 15:07:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:20,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081867921] [2022-07-23 15:07:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:20,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:20,283 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:20,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:20,311 INFO L85 PathProgramCache]: Analyzing trace with hash 40941, now seen corresponding path program 1 times [2022-07-23 15:07:20,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:20,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457115346] [2022-07-23 15:07:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:20,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:20,327 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:20,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:20,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:07:20,346 INFO L85 PathProgramCache]: Analyzing trace with hash 28699883, now seen corresponding path program 1 times [2022-07-23 15:07:20,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:07:20,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479710326] [2022-07-23 15:07:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:07:20,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:07:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:20,366 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:07:20,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:07:20,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:07:20,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 03:07:20 BoogieIcfgContainer [2022-07-23 15:07:20,636 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 15:07:20,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 15:07:20,644 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 15:07:20,645 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 15:07:20,645 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:07:20" (3/4) ... [2022-07-23 15:07:20,647 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-23 15:07:20,683 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 15:07:20,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 15:07:20,690 INFO L158 Benchmark]: Toolchain (without parser) took 1010.37ms. Allocated memory is still 107.0MB. Free memory was 82.2MB in the beginning and 82.4MB in the end (delta: -224.1kB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2022-07-23 15:07:20,690 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:20,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.75ms. Allocated memory is still 107.0MB. Free memory was 82.2MB in the beginning and 82.6MB in the end (delta: -339.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 15:07:20,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.17ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 81.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:20,692 INFO L158 Benchmark]: Boogie Preprocessor took 13.67ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:07:20,693 INFO L158 Benchmark]: RCFGBuilder took 189.80ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 71.7MB in the end (delta: 8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 15:07:20,696 INFO L158 Benchmark]: BuchiAutomizer took 551.26ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 48.1MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-23 15:07:20,696 INFO L158 Benchmark]: Witness Printer took 46.83ms. Allocated memory is still 107.0MB. Free memory was 48.1MB in the beginning and 82.4MB in the end (delta: -34.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-07-23 15:07:20,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 86.0MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.75ms. Allocated memory is still 107.0MB. Free memory was 82.2MB in the beginning and 82.6MB in the end (delta: -339.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.17ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 81.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.67ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 80.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 189.80ms. Allocated memory is still 107.0MB. Free memory was 80.1MB in the beginning and 71.7MB in the end (delta: 8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 551.26ms. Allocated memory is still 107.0MB. Free memory was 71.7MB in the beginning and 48.1MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 46.83ms. Allocated memory is still 107.0MB. Free memory was 48.1MB in the beginning and 82.4MB in the end (delta: -34.3MB). Peak memory consumption was 6.1MB. 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: 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! [2022-07-23 15:07:20,744 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)