./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/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-?-791161d [2022-07-23 14:14:03,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:14:03,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:14:03,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:14:03,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:14:03,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:14:03,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:14:03,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:14:03,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:14:03,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:14:03,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:14:03,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:14:03,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:14:03,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:14:03,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:14:03,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:14:03,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:14:03,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:14:03,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:14:03,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:14:03,172 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:14:03,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:14:03,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:14:03,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:14:03,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:14:03,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:14:03,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:14:03,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:14:03,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:14:03,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:14:03,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:14:03,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:14:03,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:14:03,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:14:03,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:14:03,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:14:03,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:14:03,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:14:03,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:14:03,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:14:03,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:14:03,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:14:03,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:14:03,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:14:03,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:14:03,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:14:03,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:14:03,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:14:03,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:14:03,215 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:14:03,215 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:14:03,215 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:14:03,216 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:14:03,216 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:14:03,217 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:14:03,217 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:14:03,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:14:03,217 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:14:03,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:14:03,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:14:03,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:14:03,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:14:03,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:14:03,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:14:03,218 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:14:03,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:14:03,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:14:03,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:14:03,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:14:03,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:14:03,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:14:03,220 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:14:03,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b [2022-07-23 14:14:03,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:14:03,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:14:03,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:14:03,424 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:14:03,424 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:14:03,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2022-07-23 14:14:03,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c060cdd/e11ed720b16a442d8ed64d5e65160b6a/FLAGebbab5347 [2022-07-23 14:14:03,839 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:14:03,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2022-07-23 14:14:03,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c060cdd/e11ed720b16a442d8ed64d5e65160b6a/FLAGebbab5347 [2022-07-23 14:14:03,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c060cdd/e11ed720b16a442d8ed64d5e65160b6a [2022-07-23 14:14:03,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:14:03,853 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:14:03,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:03,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:14:03,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:14:03,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:03" (1/1) ... [2022-07-23 14:14:03,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b55608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:03, skipping insertion in model container [2022-07-23 14:14:03,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:14:03" (1/1) ... [2022-07-23 14:14:03,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:14:03,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:14:03,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:03,963 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:14:04,001 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:14:04,008 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:14:04,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04 WrapperNode [2022-07-23 14:14:04,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:14:04,010 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:04,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:14:04,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:14:04,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,030 INFO L137 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 51 [2022-07-23 14:14:04,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:14:04,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:14:04,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:14:04,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:14:04,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:14:04,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:14:04,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:14:04,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:14:04,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (1/1) ... [2022-07-23 14:14:04,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:14:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:14:04,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:14:04,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:14:04,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:14:04,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:14:04,141 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:14:04,142 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:14:04,216 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:14:04,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:14:04,221 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 14:14:04,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:04 BoogieIcfgContainer [2022-07-23 14:14:04,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:14:04,223 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:14:04,223 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:14:04,225 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:14:04,225 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:04,226 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:14:03" (1/3) ... [2022-07-23 14:14:04,226 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13ce7768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:04, skipping insertion in model container [2022-07-23 14:14:04,226 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:04,226 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:14:04" (2/3) ... [2022-07-23 14:14:04,227 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@13ce7768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:14:04, skipping insertion in model container [2022-07-23 14:14:04,227 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:14:04,227 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:04" (3/3) ... [2022-07-23 14:14:04,228 INFO L354 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2022-07-23 14:14:04,258 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:14:04,258 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:14:04,258 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:14:04,259 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:14:04,259 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:14:04,259 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:14:04,259 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:14:04,259 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:14:04,261 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) [2022-07-23 14:14:04,272 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-07-23 14:14:04,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:04,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:04,275 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 14:14:04,275 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-23 14:14:04,275 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:14:04,276 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) [2022-07-23 14:14:04,277 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-07-23 14:14:04,277 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:14:04,278 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:14:04,278 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 14:14:04,278 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-23 14:14:04,282 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;~LOCK~0 := 0; 9#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; 15#L34true assume 0 != main_#t~nondet0#1;havoc main_#t~nondet0#1; 11#L35-3true [2022-07-23 14:14:04,282 INFO L754 eck$LassoCheckResult]: Loop: 11#L35-3true main_~got_lock~0#1 := 0; 12#L37true assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 4#L37-2true assume !(0 != main_~got_lock~0#1); 14#L35-1true assume !!(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 11#L35-3true [2022-07-23 14:14:04,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:04,286 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-07-23 14:14:04,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:04,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560177378] [2022-07-23 14:14:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:04,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:04,375 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:04,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:04,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1212915, now seen corresponding path program 1 times [2022-07-23 14:14:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:04,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226280767] [2022-07-23 14:14:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:04,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:04,409 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:04,413 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:14:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1804975636, now seen corresponding path program 1 times [2022-07-23 14:14:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:14:04,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095687199] [2022-07-23 14:14:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:14:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:14:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:04,427 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:14:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:14:04,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:14:04,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:14:04 BoogieIcfgContainer [2022-07-23 14:14:04,541 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:14:04,542 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:14:04,542 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:14:04,542 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:14:04,543 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:14:04" (3/4) ... [2022-07-23 14:14:04,544 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-23 14:14:04,570 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-23 14:14:04,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:14:04,573 INFO L158 Benchmark]: Toolchain (without parser) took 718.53ms. Allocated memory is still 123.7MB. Free memory was 96.4MB in the beginning and 67.8MB in the end (delta: 28.6MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2022-07-23 14:14:04,573 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:04,573 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.37ms. Allocated memory is still 123.7MB. Free memory was 96.2MB in the beginning and 98.4MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:14:04,575 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.73ms. Allocated memory is still 123.7MB. Free memory was 98.4MB in the beginning and 97.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:04,576 INFO L158 Benchmark]: Boogie Preprocessor took 12.12ms. Allocated memory is still 123.7MB. Free memory was 97.1MB in the beginning and 96.1MB in the end (delta: 995.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:14:04,577 INFO L158 Benchmark]: RCFGBuilder took 178.39ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 87.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:14:04,578 INFO L158 Benchmark]: BuchiAutomizer took 318.84ms. Allocated memory is still 123.7MB. Free memory was 87.0MB in the beginning and 69.4MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-23 14:14:04,578 INFO L158 Benchmark]: Witness Printer took 28.77ms. Allocated memory is still 123.7MB. Free memory was 69.4MB in the beginning and 67.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:14:04,580 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 123.7MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.37ms. Allocated memory is still 123.7MB. Free memory was 96.2MB in the beginning and 98.4MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.73ms. Allocated memory is still 123.7MB. Free memory was 98.4MB in the beginning and 97.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.12ms. Allocated memory is still 123.7MB. Free memory was 97.1MB in the beginning and 96.1MB in the end (delta: 995.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 178.39ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 87.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 318.84ms. Allocated memory is still 123.7MB. Free memory was 87.0MB in the beginning and 69.4MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 28.77ms. Allocated memory is still 123.7MB. Free memory was 69.4MB in the beginning and 67.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s 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 - FixpointNonTerminationResult [Line: 35]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {got_lock=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19de2cfa=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@449ef1fc=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@3f3d3d06=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@19a3b29b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@75fae411=0, new=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4b93736c=0, old=0, LOCK=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 35]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int LOCK; [L32] int got_lock; [L33] int old = 0, new = 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! [2022-07-23 14:14:04,614 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)