./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 574ddb4e 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-?-574ddb4 [2023-02-17 09:40:10,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:40:10,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:40:10,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:40:10,902 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:40:10,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:40:10,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:40:10,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:40:10,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:40:10,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:40:10,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:40:10,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:40:10,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:40:10,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:40:10,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:40:10,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:40:10,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:40:10,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:40:10,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:40:10,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:40:10,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:40:10,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:40:10,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:40:10,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:40:10,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:40:10,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:40:10,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:40:10,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:40:10,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:40:10,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:40:10,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:40:10,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:40:10,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:40:10,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:40:10,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:40:10,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:40:10,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:40:10,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:40:10,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:40:10,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:40:10,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:40:10,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-17 09:40:10,960 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:40:10,963 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:40:10,964 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:40:10,964 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:40:10,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:40:10,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:40:10,965 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:40:10,965 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-17 09:40:10,965 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-17 09:40:10,966 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-17 09:40:10,966 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-17 09:40:10,966 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-17 09:40:10,966 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-17 09:40:10,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:40:10,967 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:40:10,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:40:10,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:40:10,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-17 09:40:10,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-17 09:40:10,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-17 09:40:10,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:40:10,968 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-17 09:40:10,968 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:40:10,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-17 09:40:10,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:40:10,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:40:10,968 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:40:10,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:40:10,969 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-17 09:40:10,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b [2023-02-17 09:40:11,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:40:11,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:40:11,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:40:11,183 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:40:11,183 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:40:11,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-02-17 09:40:12,146 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:40:12,301 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:40:12,302 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-02-17 09:40:12,308 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/137a7996f/96e1599e1ea6475ba0695f70ebbba997/FLAG3e5965a7c [2023-02-17 09:40:12,325 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/137a7996f/96e1599e1ea6475ba0695f70ebbba997 [2023-02-17 09:40:12,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:40:12,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:40:12,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:40:12,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:40:12,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:40:12,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5975f739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12, skipping insertion in model container [2023-02-17 09:40:12,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:40:12,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:40:12,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:40:12,461 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:40:12,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:40:12,480 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:40:12,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12 WrapperNode [2023-02-17 09:40:12,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:40:12,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:40:12,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:40:12,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:40:12,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,503 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 51 [2023-02-17 09:40:12,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:40:12,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:40:12,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:40:12,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:40:12,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,525 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:40:12,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:40:12,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:40:12,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:40:12,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (1/1) ... [2023-02-17 09:40:12,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:12,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:12,550 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) [2023-02-17 09:40:12,569 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 [2023-02-17 09:40:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:40:12,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:40:12,616 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:40:12,618 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:40:12,715 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:40:12,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:40:12,720 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 09:40:12,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:40:12 BoogieIcfgContainer [2023-02-17 09:40:12,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:40:12,722 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-17 09:40:12,722 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-17 09:40:12,724 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-17 09:40:12,725 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:40:12,725 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.02 09:40:12" (1/3) ... [2023-02-17 09:40:12,726 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7567a3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 09:40:12, skipping insertion in model container [2023-02-17 09:40:12,726 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:40:12,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:12" (2/3) ... [2023-02-17 09:40:12,726 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7567a3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 09:40:12, skipping insertion in model container [2023-02-17 09:40:12,738 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:40:12,738 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:40:12" (3/3) ... [2023-02-17 09:40:12,739 INFO L332 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-02-17 09:40:12,827 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-17 09:40:12,827 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-17 09:40:12,827 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-17 09:40:12,827 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-17 09:40:12,827 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-17 09:40:12,827 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-17 09:40:12,827 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-17 09:40:12,828 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-17 09:40:12,831 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) [2023-02-17 09:40:12,842 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-02-17 09:40:12,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:12,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:12,845 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 09:40:12,845 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 09:40:12,846 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-17 09:40:12,846 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) [2023-02-17 09:40:12,847 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-02-17 09:40:12,847 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:12,847 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:12,847 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 09:40:12,848 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 09:40:12,857 INFO L748 eck$LassoCheckResult]: Stem: 18#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;~LOCK~0 := 0; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet1#1, main_#t~nondet4#1, main_#t~post5#1, main_~got_lock~0#1, main_~old~0#1, main_~new~0#1;havoc main_~got_lock~0#1;main_~old~0#1 := 0;main_~new~0#1 := 0; 13#L34true assume 0 != main_#t~nondet0#1;havoc main_#t~nondet0#1; 10#L35-3true [2023-02-17 09:40:12,857 INFO L750 eck$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 [2023-02-17 09:40:12,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:12,861 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-17 09:40:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:12,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762678588] [2023-02-17 09:40:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:12,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:12,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:12,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:12,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:12,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1212915, now seen corresponding path program 1 times [2023-02-17 09:40:12,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:12,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138806602] [2023-02-17 09:40:12,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:12,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:12,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:12,976 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:12,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1804975636, now seen corresponding path program 1 times [2023-02-17 09:40:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:12,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485863091] [2023-02-17 09:40:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:12,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:12,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:13,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:13,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 09:40:13 BoogieIcfgContainer [2023-02-17 09:40:13,091 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-17 09:40:13,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:40:13,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:40:13,092 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:40:13,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:40:12" (3/4) ... [2023-02-17 09:40:13,094 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-02-17 09:40:13,125 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 09:40:13,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:40:13,127 INFO L158 Benchmark]: Toolchain (without parser) took 798.00ms. Allocated memory is still 138.4MB. Free memory was 110.9MB in the beginning and 70.3MB in the end (delta: 40.7MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-02-17 09:40:13,127 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:13,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 152.00ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 101.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:40:13,130 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.01ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 966.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:13,131 INFO L158 Benchmark]: Boogie Preprocessor took 22.37ms. Allocated memory is still 138.4MB. Free memory was 99.6MB in the beginning and 99.1MB in the end (delta: 563.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:13,132 INFO L158 Benchmark]: RCFGBuilder took 193.26ms. Allocated memory is still 138.4MB. Free memory was 98.5MB in the beginning and 89.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 09:40:13,133 INFO L158 Benchmark]: BuchiAutomizer took 368.99ms. Allocated memory is still 138.4MB. Free memory was 89.1MB in the beginning and 71.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-17 09:40:13,133 INFO L158 Benchmark]: Witness Printer took 34.17ms. Allocated memory is still 138.4MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:40:13,134 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 83.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 152.00ms. Allocated memory is still 138.4MB. Free memory was 110.7MB in the beginning and 101.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.01ms. Allocated memory is still 138.4MB. Free memory was 101.2MB in the beginning and 100.2MB in the end (delta: 966.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.37ms. Allocated memory is still 138.4MB. Free memory was 99.6MB in the beginning and 99.1MB in the end (delta: 563.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 193.26ms. Allocated memory is still 138.4MB. Free memory was 98.5MB in the beginning and 89.1MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 368.99ms. Allocated memory is still 138.4MB. Free memory was 89.1MB in the beginning and 71.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 34.17ms. Allocated memory is still 138.4MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.5MB). 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 0.2s. 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! [2023-02-17 09:40:13,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)