./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/ldv-regression/stateful_check.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -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/ldv-regression/stateful_check.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 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-21 03:56:57,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-21 03:56:57,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-21 03:56:57,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-21 03:56:57,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-21 03:56:57,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-21 03:56:57,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-21 03:56:57,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-21 03:56:57,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-21 03:56:57,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-21 03:56:57,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-21 03:56:57,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-21 03:56:57,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-21 03:56:57,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-21 03:56:57,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-21 03:56:57,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-21 03:56:57,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-21 03:56:57,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-21 03:56:57,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-21 03:56:57,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-21 03:56:57,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-21 03:56:57,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-21 03:56:57,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-21 03:56:57,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-21 03:56:57,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-21 03:56:57,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-21 03:56:57,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-21 03:56:57,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-21 03:56:57,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-21 03:56:57,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-21 03:56:57,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-21 03:56:57,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-21 03:56:57,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-21 03:56:57,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-21 03:56:57,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-21 03:56:57,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-21 03:56:57,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-21 03:56:57,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-21 03:56:57,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-21 03:56:57,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-21 03:56:57,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-21 03:56:57,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-02-21 03:56:57,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-21 03:56:57,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-21 03:56:57,510 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-21 03:56:57,510 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-21 03:56:57,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-21 03:56:57,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-21 03:56:57,512 INFO L138 SettingsManager]: * Use SBE=true [2022-02-21 03:56:57,512 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-02-21 03:56:57,512 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-02-21 03:56:57,512 INFO L138 SettingsManager]: * Use old map elimination=false [2022-02-21 03:56:57,513 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-02-21 03:56:57,514 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-02-21 03:56:57,514 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-02-21 03:56:57,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-21 03:56:57,514 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-21 03:56:57,514 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-02-21 03:56:57,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-21 03:56:57,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-21 03:56:57,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-21 03:56:57,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-02-21 03:56:57,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-02-21 03:56:57,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-02-21 03:56:57,516 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-21 03:56:57,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-21 03:56:57,516 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-02-21 03:56:57,516 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-21 03:56:57,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-02-21 03:56:57,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-21 03:56:57,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-21 03:56:57,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-21 03:56:57,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-21 03:56:57,518 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-21 03:56:57,518 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86e7865b5c88aae342720e4dde014f366638a0b48b0e0f6e55acb2c675bcac3e [2022-02-21 03:56:57,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-21 03:56:57,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-21 03:56:57,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-21 03:56:57,783 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-21 03:56:57,784 INFO L275 PluginConnector]: CDTParser initialized [2022-02-21 03:56:57,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/stateful_check.c [2022-02-21 03:56:57,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c52dd743/c9c271e33b614919ba5105fefdf31de1/FLAGd564ad0e1 [2022-02-21 03:56:58,295 INFO L306 CDTParser]: Found 1 translation units. [2022-02-21 03:56:58,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/stateful_check.c [2022-02-21 03:56:58,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c52dd743/c9c271e33b614919ba5105fefdf31de1/FLAGd564ad0e1 [2022-02-21 03:56:58,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c52dd743/c9c271e33b614919ba5105fefdf31de1 [2022-02-21 03:56:58,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-21 03:56:58,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-21 03:56:58,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-21 03:56:58,327 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-21 03:56:58,331 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-21 03:56:58,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd4bf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58, skipping insertion in model container [2022-02-21 03:56:58,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-21 03:56:58,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-21 03:56:58,487 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/ldv-regression/stateful_check.c[298,311] [2022-02-21 03:56:58,519 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:56:58,528 INFO L203 MainTranslator]: Completed pre-run [2022-02-21 03:56:58,540 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/ldv-regression/stateful_check.c[298,311] [2022-02-21 03:56:58,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-21 03:56:58,564 INFO L208 MainTranslator]: Completed translation [2022-02-21 03:56:58,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58 WrapperNode [2022-02-21 03:56:58,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-21 03:56:58,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-21 03:56:58,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-21 03:56:58,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-21 03:56:58,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,607 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 116 [2022-02-21 03:56:58,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-21 03:56:58,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-21 03:56:58,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-21 03:56:58,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-21 03:56:58,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-21 03:56:58,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-21 03:56:58,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-21 03:56:58,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-21 03:56:58,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (1/1) ... [2022-02-21 03:56:58,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-02-21 03:56:58,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-21 03:56:58,709 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) [2022-02-21 03:56:58,724 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 [2022-02-21 03:56:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-21 03:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-21 03:56:58,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-21 03:56:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-21 03:56:58,817 INFO L234 CfgBuilder]: Building ICFG [2022-02-21 03:56:58,818 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-21 03:56:58,997 INFO L275 CfgBuilder]: Performing block encoding [2022-02-21 03:56:59,003 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-21 03:56:59,018 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-21 03:56:59,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:56:59 BoogieIcfgContainer [2022-02-21 03:56:59,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-21 03:56:59,021 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-02-21 03:56:59,021 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-02-21 03:56:59,025 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-02-21 03:56:59,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:56:59,026 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.02 03:56:58" (1/3) ... [2022-02-21 03:56:59,026 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b01cfcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:56:59, skipping insertion in model container [2022-02-21 03:56:59,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:56:59,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:56:58" (2/3) ... [2022-02-21 03:56:59,027 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b01cfcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.02 03:56:59, skipping insertion in model container [2022-02-21 03:56:59,027 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-02-21 03:56:59,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:56:59" (3/3) ... [2022-02-21 03:56:59,029 INFO L388 chiAutomizerObserver]: Analyzing ICFG stateful_check.c [2022-02-21 03:56:59,075 INFO L359 BuchiCegarLoop]: Interprodecural is true [2022-02-21 03:56:59,075 INFO L360 BuchiCegarLoop]: Hoare is false [2022-02-21 03:56:59,075 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-02-21 03:56:59,075 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-02-21 03:56:59,075 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-02-21 03:56:59,076 INFO L364 BuchiCegarLoop]: Difference is false [2022-02-21 03:56:59,076 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-02-21 03:56:59,076 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2022-02-21 03:56:59,093 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 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) [2022-02-21 03:56:59,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2022-02-21 03:56:59,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:56:59,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:56:59,142 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-02-21 03:56:59,142 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-02-21 03:56:59,142 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2022-02-21 03:56:59,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 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) [2022-02-21 03:56:59,161 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2022-02-21 03:56:59,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:56:59,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:56:59,165 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-02-21 03:56:59,165 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-02-21 03:56:59,172 INFO L791 eck$LassoCheckResult]: Stem: 42#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(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 29#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 50#L72true main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 36#L78-2true [2022-02-21 03:56:59,173 INFO L793 eck$LassoCheckResult]: Loop: 36#L78-2true assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 17#L82true assume main_#t~switch8#1; 18#L83true assume !(0 == main_~ldv_s_misc_fops_file_operations~0#1); 12#L80true havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 36#L78-2true [2022-02-21 03:56:59,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:56:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-02-21 03:56:59,193 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:56:59,194 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147404241] [2022-02-21 03:56:59,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:56:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:56:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,288 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:56:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,362 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:56:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:56:59,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1327184, now seen corresponding path program 1 times [2022-02-21 03:56:59,374 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:56:59,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114772738] [2022-02-21 03:56:59,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:56:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:56:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,387 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:56:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,403 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:56:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:56:59,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1804166384, now seen corresponding path program 1 times [2022-02-21 03:56:59,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:56:59,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334837741] [2022-02-21 03:56:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:56:59,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:56:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-21 03:56:59,507 INFO L290 TraceCheckUtils]: 0: Hoare triple {57#true} 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(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; {57#true} is VALID [2022-02-21 03:56:59,510 INFO L290 TraceCheckUtils]: 1: Hoare triple {57#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} is VALID [2022-02-21 03:56:59,512 INFO L290 TraceCheckUtils]: 2: Hoare triple {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} is VALID [2022-02-21 03:56:59,513 INFO L290 TraceCheckUtils]: 3: Hoare triple {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} is VALID [2022-02-21 03:56:59,514 INFO L290 TraceCheckUtils]: 4: Hoare triple {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} assume main_#t~switch8#1; {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} is VALID [2022-02-21 03:56:59,514 INFO L290 TraceCheckUtils]: 5: Hoare triple {59#(= 0 |ULTIMATE.start_main_~ldv_s_misc_fops_file_operations~0#1|)} assume !(0 == main_~ldv_s_misc_fops_file_operations~0#1); {58#false} is VALID [2022-02-21 03:56:59,515 INFO L290 TraceCheckUtils]: 6: Hoare triple {58#false} havoc main_#t~nondet7#1;havoc main_#t~switch8#1; {58#false} is VALID [2022-02-21 03:56:59,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-21 03:56:59,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-21 03:56:59,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334837741] [2022-02-21 03:56:59,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334837741] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-21 03:56:59,518 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-21 03:56:59,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-21 03:56:59,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497362865] [2022-02-21 03:56:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-21 03:56:59,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-21 03:56:59,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-21 03:56:59,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-21 03:56:59,627 INFO L87 Difference]: Start difference. First operand has 49 states, 48 states have (on average 1.375) internal successors, (66), 48 states have internal predecessors, (66), 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-02-21 03:56:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:56:59,751 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2022-02-21 03:56:59,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-21 03:56:59,753 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-02-21 03:56:59,775 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-21 03:56:59,780 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 78 transitions. [2022-02-21 03:56:59,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2022-02-21 03:56:59,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 44 states and 60 transitions. [2022-02-21 03:56:59,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2022-02-21 03:56:59,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2022-02-21 03:56:59,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 60 transitions. [2022-02-21 03:56:59,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-02-21 03:56:59,791 INFO L681 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2022-02-21 03:56:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 60 transitions. [2022-02-21 03:56:59,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-02-21 03:56:59,812 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-21 03:56:59,813 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states and 60 transitions. Second operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 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) [2022-02-21 03:56:59,814 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states and 60 transitions. Second operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 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) [2022-02-21 03:56:59,815 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 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) [2022-02-21 03:56:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:56:59,819 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2022-02-21 03:56:59,819 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2022-02-21 03:56:59,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:56:59,820 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:56:59,821 INFO L74 IsIncluded]: Start isIncluded. First operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 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) Second operand 44 states and 60 transitions. [2022-02-21 03:56:59,822 INFO L87 Difference]: Start difference. First operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 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) Second operand 44 states and 60 transitions. [2022-02-21 03:56:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-21 03:56:59,830 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2022-02-21 03:56:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2022-02-21 03:56:59,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-21 03:56:59,831 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-21 03:56:59,831 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-21 03:56:59,832 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-21 03:56:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 43 states have internal predecessors, (60), 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) [2022-02-21 03:56:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2022-02-21 03:56:59,839 INFO L704 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2022-02-21 03:56:59,839 INFO L587 BuchiCegarLoop]: Abstraction has 44 states and 60 transitions. [2022-02-21 03:56:59,839 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2022-02-21 03:56:59,840 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 44 states and 60 transitions. [2022-02-21 03:56:59,841 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2022-02-21 03:56:59,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-02-21 03:56:59,844 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-02-21 03:56:59,844 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-02-21 03:56:59,844 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2022-02-21 03:56:59,844 INFO L791 eck$LassoCheckResult]: Stem: 150#ULTIMATE.startENTRY 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(17, 2);call #Ultimate.allocInit(12, 3);~ldv_mutex~0 := 1;~open_called~0 := 0; 137#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret5#1, main_#t~nondet7#1, main_#t~switch8#1, main_#t~ret9#1, main_#t~post10#1, main_#t~ret11#1, main_#t~post12#1, main_#t~ret13#1, main_#t~post14#1, main_#t~ret15#1, main_#t~nondet6#1, main_~ldv_s_misc_fops_file_operations~0#1;main_~ldv_s_misc_fops_file_operations~0#1 := 0;assume { :begin_inline_my_init } true;havoc my_init_#res#1;~open_called~0 := 0;my_init_#res#1 := 0; 138#L72 main_#t~ret5#1 := my_init_#res#1;assume { :end_inline_my_init } true;havoc main_#t~ret5#1; 142#L78-2 [2022-02-21 03:56:59,845 INFO L793 eck$LassoCheckResult]: Loop: 142#L78-2 assume !!(0 != main_#t~nondet6#1);havoc main_#t~nondet6#1;main_#t~switch8#1 := 0 == main_#t~nondet7#1; 145#L82 assume !main_#t~switch8#1;main_#t~switch8#1 := main_#t~switch8#1 || 1 == main_#t~nondet7#1; 151#L90 assume main_#t~switch8#1; 152#L91 assume !(1 == main_~ldv_s_misc_fops_file_operations~0#1); 139#L80 havoc main_#t~nondet7#1;havoc main_#t~switch8#1; 142#L78-2 [2022-02-21 03:56:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:56:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 2 times [2022-02-21 03:56:59,846 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:56:59,846 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030271279] [2022-02-21 03:56:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:56:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:56:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,854 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:56:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,860 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:56:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:56:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash 41592526, now seen corresponding path program 1 times [2022-02-21 03:56:59,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:56:59,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947806869] [2022-02-21 03:56:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:56:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:56:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,868 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:56:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,874 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:56:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-21 03:56:59,875 INFO L85 PathProgramCache]: Analyzing trace with hash 95032878, now seen corresponding path program 1 times [2022-02-21 03:56:59,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-21 03:56:59,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66401913] [2022-02-21 03:56:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-21 03:56:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-21 03:56:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,888 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-21 03:56:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-21 03:56:59,903 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-21 03:57:00,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.02 03:57:00 BoogieIcfgContainer [2022-02-21 03:57:00,145 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-02-21 03:57:00,145 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-21 03:57:00,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-21 03:57:00,146 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-21 03:57:00,146 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:56:59" (3/4) ... [2022-02-21 03:57:00,149 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-02-21 03:57:00,188 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-21 03:57:00,188 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-21 03:57:00,189 INFO L158 Benchmark]: Toolchain (without parser) took 1863.27ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 56.9MB in the beginning and 87.6MB in the end (delta: -30.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:57:00,194 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 47.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:57:00,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.39ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 56.7MB in the beginning and 89.9MB in the end (delta: -33.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-21 03:57:00,196 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.31ms. Allocated memory is still 115.3MB. Free memory was 89.9MB in the beginning and 88.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-21 03:57:00,197 INFO L158 Benchmark]: Boogie Preprocessor took 45.83ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 86.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:57:00,197 INFO L158 Benchmark]: RCFGBuilder took 365.72ms. Allocated memory is still 115.3MB. Free memory was 86.8MB in the beginning and 75.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-21 03:57:00,197 INFO L158 Benchmark]: BuchiAutomizer took 1123.82ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 88.9MB in the end (delta: -13.7MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2022-02-21 03:57:00,198 INFO L158 Benchmark]: Witness Printer took 42.75ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 87.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-21 03:57:00,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 90.2MB. Free memory was 47.0MB in the beginning and 47.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.39ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 56.7MB in the beginning and 89.9MB in the end (delta: -33.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.31ms. Allocated memory is still 115.3MB. Free memory was 89.9MB in the beginning and 88.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.83ms. Allocated memory is still 115.3MB. Free memory was 88.2MB in the beginning and 86.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 365.72ms. Allocated memory is still 115.3MB. Free memory was 86.8MB in the beginning and 75.2MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 1123.82ms. Allocated memory is still 115.3MB. Free memory was 75.2MB in the beginning and 88.9MB in the end (delta: -13.7MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Witness Printer took 42.75ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 87.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 44 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 44 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 50 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 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: 78]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4bcc654f=4, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@70a95cb7=1, NULL=0, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5fedcc62=0, \result=0, ldv_mutex=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77f43ef7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2c9365ff=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@6ad14ef3=0, NULL=0, ldv_s_misc_fops_file_operations=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@59c76929=0, open_called=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@48db21c4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2c9ebf69=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61a9fe2b=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 78]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L11] int ldv_mutex = 1; [L13] int open_called = 0; [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; [L77] RET my_init() Loop: [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L91] COND FALSE !(ldv_s_misc_fops_file_operations==1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-02-21 03:57:00,240 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)