./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:13:43,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:13:43,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:13:43,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:13:43,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:13:43,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:13:43,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:13:43,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:13:43,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:13:43,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:13:43,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:13:43,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:13:43,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:13:43,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:13:43,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:13:43,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:13:43,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:13:43,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:13:43,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:13:43,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:13:43,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:13:43,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:13:43,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:13:43,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:13:43,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:13:43,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:13:43,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:13:43,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:13:43,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:13:43,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:13:43,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:13:43,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:13:43,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:13:43,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:13:43,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:13:43,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:13:43,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:13:43,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:13:43,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:13:43,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:13:43,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:13:43,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 23:13:43,434 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:13:43,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:13:43,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:13:43,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:13:43,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:13:43,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:13:43,436 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:13:43,436 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 23:13:43,437 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 23:13:43,437 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 23:13:43,437 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 23:13:43,437 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 23:13:43,437 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 23:13:43,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:13:43,437 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:13:43,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:13:43,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:13:43,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 23:13:43,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 23:13:43,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 23:13:43,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:13:43,438 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 23:13:43,439 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:13:43,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 23:13:43,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:13:43,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:13:43,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:13:43,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:13:43,440 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 23:13:43,440 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b [2023-02-15 23:13:43,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:13:43,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:13:43,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:13:43,653 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:13:43,653 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:13:43,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-02-15 23:13:44,910 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:13:45,065 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:13:45,065 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-02-15 23:13:45,070 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ce823df/6f1bfe5dbf3d42cbaefa44ff45d125b2/FLAG6dc29e1be [2023-02-15 23:13:45,085 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ce823df/6f1bfe5dbf3d42cbaefa44ff45d125b2 [2023-02-15 23:13:45,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:13:45,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:13:45,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:13:45,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:13:45,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:13:45,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7687d68e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45, skipping insertion in model container [2023-02-15 23:13:45,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:13:45,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:13:45,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:13:45,212 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:13:45,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:13:45,230 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:13:45,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45 WrapperNode [2023-02-15 23:13:45,231 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:13:45,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:13:45,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:13:45,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:13:45,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,242 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,256 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 51 [2023-02-15 23:13:45,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:13:45,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:13:45,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:13:45,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:13:45,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,281 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:13:45,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:13:45,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:13:45,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:13:45,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (1/1) ... [2023-02-15 23:13:45,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 23:13:45,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:13:45,322 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) [2023-02-15 23:13:45,343 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 [2023-02-15 23:13:45,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:13:45,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:13:45,392 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:13:45,394 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:13:45,485 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:13:45,497 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:13:45,498 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 23:13:45,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:13:45 BoogieIcfgContainer [2023-02-15 23:13:45,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:13:45,503 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 23:13:45,503 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 23:13:45,506 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 23:13:45,507 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:13:45,507 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 11:13:45" (1/3) ... [2023-02-15 23:13:45,507 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@143c78b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:13:45, skipping insertion in model container [2023-02-15 23:13:45,508 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:13:45,508 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:13:45" (2/3) ... [2023-02-15 23:13:45,508 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@143c78b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 11:13:45, skipping insertion in model container [2023-02-15 23:13:45,508 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 23:13:45,508 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:13:45" (3/3) ... [2023-02-15 23:13:45,509 INFO L332 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-02-15 23:13:45,566 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 23:13:45,567 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 23:13:45,567 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 23:13:45,567 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 23:13:45,567 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 23:13:45,567 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 23:13:45,567 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 23:13:45,567 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 23:13:45,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2023-02-15 23:13:45,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-02-15 23:13:45,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:13:45,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:13:45,594 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 23:13:45,594 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:13:45,595 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 23:13:45,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 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) [2023-02-15 23:13:45,596 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-02-15 23:13:45,596 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 23:13:45,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 23:13:45,597 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 23:13:45,597 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 23:13:45,605 INFO L748 eck$LassoCheckResult]: Stem: 18#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;~LOCK~0 := 0; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet1#1, main_#t~nondet4#1, main_#t~post5#1, main_~got_lock~0#1, main_~old~0#1, main_~new~0#1;havoc main_~got_lock~0#1;main_~old~0#1 := 0;main_~new~0#1 := 0; 13#L34true assume 0 != main_#t~nondet0#1;havoc main_#t~nondet0#1; 10#L35-3true [2023-02-15 23:13:45,605 INFO L750 eck$LassoCheckResult]: Loop: 10#L35-3true main_~got_lock~0#1 := 0; 11#L37true assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 4#L37-2true assume !(0 != main_~got_lock~0#1); 12#L35-1true assume !!(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 10#L35-3true [2023-02-15 23:13:45,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:45,609 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-15 23:13:45,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:45,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671892663] [2023-02-15 23:13:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:45,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:45,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:45,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1212915, now seen corresponding path program 1 times [2023-02-15 23:13:45,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:45,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348439796] [2023-02-15 23:13:45,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:45,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:13:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1804975636, now seen corresponding path program 1 times [2023-02-15 23:13:45,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:13:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29893074] [2023-02-15 23:13:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:13:45,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:13:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,696 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 23:13:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,781 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 23:13:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 23:13:45,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 11:13:45 BoogieIcfgContainer [2023-02-15 23:13:45,801 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 23:13:45,802 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 23:13:45,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 23:13:45,802 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 23:13:45,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:13:45" (3/4) ... [2023-02-15 23:13:45,804 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-15 23:13:45,826 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 23:13:45,826 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 23:13:45,827 INFO L158 Benchmark]: Toolchain (without parser) took 732.34ms. Allocated memory is still 209.7MB. Free memory was 160.8MB in the beginning and 117.9MB in the end (delta: 42.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-02-15 23:13:45,828 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:13:45,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 134.58ms. Allocated memory is still 209.7MB. Free memory was 160.8MB in the beginning and 151.4MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 23:13:45,828 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.43ms. Allocated memory is still 209.7MB. Free memory was 151.4MB in the beginning and 150.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:13:45,829 INFO L158 Benchmark]: Boogie Preprocessor took 24.89ms. Allocated memory is still 209.7MB. Free memory was 150.3MB in the beginning and 149.3MB in the end (delta: 984.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 23:13:45,829 INFO L158 Benchmark]: RCFGBuilder took 218.66ms. Allocated memory is still 209.7MB. Free memory was 149.3MB in the beginning and 138.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 23:13:45,830 INFO L158 Benchmark]: BuchiAutomizer took 298.43ms. Allocated memory is still 209.7MB. Free memory was 138.9MB in the beginning and 119.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-02-15 23:13:45,831 INFO L158 Benchmark]: Witness Printer took 24.39ms. Allocated memory is still 209.7MB. Free memory was 119.8MB in the beginning and 117.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 23:13:45,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 134.58ms. Allocated memory is still 209.7MB. Free memory was 160.8MB in the beginning and 151.4MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.43ms. Allocated memory is still 209.7MB. Free memory was 151.4MB in the beginning and 150.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.89ms. Allocated memory is still 209.7MB. Free memory was 150.3MB in the beginning and 149.3MB in the end (delta: 984.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 218.66ms. Allocated memory is still 209.7MB. Free memory was 149.3MB in the beginning and 138.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 298.43ms. Allocated memory is still 209.7MB. Free memory was 138.9MB in the beginning and 119.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 24.39ms. Allocated memory is still 209.7MB. Free memory was 119.8MB in the beginning and 117.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 35]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int LOCK; VAL [LOCK=0] [L32] int got_lock; [L33] int old = 0, new = 0; VAL [LOCK=0, new=0, old=0] [L34] COND TRUE __VERIFIER_nondet_int() Loop: [L36] got_lock = 0 [L37] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND FALSE !(\read(got_lock)) [L44] COND TRUE __VERIFIER_nondet_int() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 35]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int LOCK; VAL [LOCK=0] [L32] int got_lock; [L33] int old = 0, new = 0; VAL [LOCK=0, new=0, old=0] [L34] COND TRUE __VERIFIER_nondet_int() Loop: [L36] got_lock = 0 [L37] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND FALSE !(\read(got_lock)) [L44] COND TRUE __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-02-15 23:13:45,873 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)