./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 42d87675 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-42d8767-m [2025-04-24 22:04:55,071 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 22:04:55,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2025-04-24 22:04:55,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 22:04:55,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 22:04:55,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 22:04:55,135 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 22:04:55,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 22:04:55,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 22:04:55,135 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 22:04:55,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 22:04:55,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 22:04:55,135 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 22:04:55,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 22:04:55,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 22:04:55,137 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 22:04:55,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 22:04:55,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 22:04:55,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 22:04:55,138 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 22:04:55,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE [2025-04-24 22:04:55,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 22:04:55,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 22:04:55,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 22:04:55,346 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 22:04:55,346 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 22:04:55,347 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-04-24 22:04:56,652 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/44d4d43cf/78849c5757bf42b78cdcee144e19ff1b/FLAGcd6aa14fb [2025-04-24 22:04:56,904 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 22:04:56,905 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-04-24 22:04:56,921 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/44d4d43cf/78849c5757bf42b78cdcee144e19ff1b/FLAGcd6aa14fb [2025-04-24 22:04:57,703 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/44d4d43cf/78849c5757bf42b78cdcee144e19ff1b [2025-04-24 22:04:57,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 22:04:57,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 22:04:57,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 22:04:57,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 22:04:57,711 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 22:04:57,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 10:04:57" (1/1) ... [2025-04-24 22:04:57,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e6ca5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:57, skipping insertion in model container [2025-04-24 22:04:57,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 10:04:57" (1/1) ... [2025-04-24 22:04:57,729 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 22:04:58,024 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2025-04-24 22:04:58,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 22:04:58,040 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 22:04:58,097 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2025-04-24 22:04:58,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 22:04:58,120 INFO L204 MainTranslator]: Completed translation [2025-04-24 22:04:58,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58 WrapperNode [2025-04-24 22:04:58,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 22:04:58,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 22:04:58,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 22:04:58,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 22:04:58,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,149 INFO L138 Inliner]: procedures = 172, calls = 19, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 99 [2025-04-24 22:04:58,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 22:04:58,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 22:04:58,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 22:04:58,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 22:04:58,154 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,160 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 22:04:58,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 22:04:58,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 22:04:58,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 22:04:58,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:04:58" (1/1) ... [2025-04-24 22:04:58,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 22:04:58,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 22:04:58,201 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 22:04:58,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 22:04:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-24 22:04:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-24 22:04:58,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-24 22:04:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-24 22:04:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 22:04:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 22:04:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 22:04:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 22:04:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-24 22:04:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 22:04:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 22:04:58,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 22:04:58,220 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 22:04:58,303 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 22:04:58,304 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 22:04:58,410 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 22:04:58,411 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 22:04:58,508 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: ). Is there illegal control flow (e.g. loops) within an atomic block? at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionIsComplete(AtomicBlockAnalyzer.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:166) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-04-24 22:04:58,513 INFO L158 Benchmark]: Toolchain (without parser) took 805.78ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 71.7MB in the end (delta: 51.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-04-24 22:04:58,513 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 201.3MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 22:04:58,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.07ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 101.4MB in the end (delta: 21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-04-24 22:04:58,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.50ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 99.1MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-04-24 22:04:58,514 INFO L158 Benchmark]: Boogie Preprocessor took 24.90ms. Allocated memory is still 167.8MB. Free memory was 99.1MB in the beginning and 97.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 22:04:58,514 INFO L158 Benchmark]: RCFGBuilder took 336.25ms. Allocated memory is still 167.8MB. Free memory was 97.6MB in the beginning and 71.7MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-24 22:04:58,515 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 201.3MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 413.07ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 101.4MB in the end (delta: 21.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.50ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 99.1MB in the end (delta: 2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.90ms. Allocated memory is still 167.8MB. Free memory was 99.1MB in the beginning and 97.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.25ms. Allocated memory is still 167.8MB. Free memory was 97.6MB in the beginning and 71.7MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: ). Is there illegal control flow (e.g. loops) within an atomic block? de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: ). Is there illegal control flow (e.g. loops) within an atomic block?: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2025-04-24 22:04:58,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --traceabstraction.use.conditional.por.in.concurrent.analysis false --traceabstraction.commutativity.condition.synthesis NONE --- Real Ultimate output --- This is Ultimate 0.3.0-dev-42d8767-m [2025-04-24 22:05:00,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-24 22:05:00,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Bitvector.epf [2025-04-24 22:05:00,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-24 22:05:00,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-24 22:05:00,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-24 22:05:00,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-24 22:05:00,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-24 22:05:00,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-24 22:05:00,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * Use SBE=true [2025-04-24 22:05:00,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-24 22:05:00,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-24 22:05:00,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-24 22:05:00,377 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-04-24 22:05:00,377 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-04-24 22:05:00,377 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-24 22:05:00,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-24 22:05:00,378 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-24 22:05:00,378 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-24 22:05:00,378 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-24 22:05:00,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 22:05:00,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 22:05:00,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 22:05:00,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 22:05:00,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 22:05:00,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Refinement strategy for commutativity condition synthesis=FOX [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2025-04-24 22:05:00,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-24 22:05:00,380 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-04-24 22:05:00,380 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2025-04-24 22:05:00,380 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-04-24 22:05:00,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2025-04-24 22:05:00,380 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2025-04-24 22:05:00,380 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2025-04-24 22:05:00,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use conditional POR in concurrent analysis -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Commutativity condition synthesis -> NONE [2025-04-24 22:05:00,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-24 22:05:00,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-24 22:05:00,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-24 22:05:00,613 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-24 22:05:00,613 INFO L274 PluginConnector]: CDTParser initialized [2025-04-24 22:05:00,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-04-24 22:05:01,922 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7a377a317/a420ae4ff3264177a06e2948756a370b/FLAGf56d88263 [2025-04-24 22:05:02,134 INFO L389 CDTParser]: Found 1 translation units. [2025-04-24 22:05:02,135 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-04-24 22:05:02,148 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7a377a317/a420ae4ff3264177a06e2948756a370b/FLAGf56d88263 [2025-04-24 22:05:02,973 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/7a377a317/a420ae4ff3264177a06e2948756a370b [2025-04-24 22:05:02,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-24 22:05:02,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-04-24 22:05:02,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-24 22:05:02,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-24 22:05:02,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-24 22:05:02,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 10:05:02" (1/1) ... [2025-04-24 22:05:02,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7200f625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:02, skipping insertion in model container [2025-04-24 22:05:02,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.04 10:05:02" (1/1) ... [2025-04-24 22:05:03,004 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-24 22:05:03,210 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2025-04-24 22:05:03,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 22:05:03,228 INFO L200 MainTranslator]: Completed pre-run [2025-04-24 22:05:03,268 WARN L116 LibraryModelHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i[30893,30906] [2025-04-24 22:05:03,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-24 22:05:03,297 INFO L204 MainTranslator]: Completed translation [2025-04-24 22:05:03,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03 WrapperNode [2025-04-24 22:05:03,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-24 22:05:03,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-24 22:05:03,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-24 22:05:03,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-24 22:05:03,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,321 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,339 INFO L138 Inliner]: procedures = 175, calls = 19, calls flagged for inlining = 5, calls inlined = 7, statements flattened = 99 [2025-04-24 22:05:03,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-24 22:05:03,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-24 22:05:03,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-24 22:05:03,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-24 22:05:03,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,358 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,362 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-24 22:05:03,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-24 22:05:03,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-24 22:05:03,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-24 22:05:03,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.04 10:05:03" (1/1) ... [2025-04-24 22:05:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-24 22:05:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-24 22:05:03,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-24 22:05:03,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-04-24 22:05:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-24 22:05:03,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-24 22:05:03,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-24 22:05:03,427 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-24 22:05:03,520 INFO L234 CfgBuilder]: Building ICFG [2025-04-24 22:05:03,521 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-24 22:05:03,666 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-24 22:05:03,666 INFO L283 CfgBuilder]: Performing block encoding [2025-04-24 22:05:03,780 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: ). Is there illegal control flow (e.g. loops) within an atomic block? at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionIsComplete(AtomicBlockAnalyzer.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:166) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-04-24 22:05:03,785 INFO L158 Benchmark]: Toolchain (without parser) took 808.69ms. Allocated memory is still 83.9MB. Free memory was 56.0MB in the beginning and 26.7MB in the end (delta: 29.3MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2025-04-24 22:05:03,785 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 18.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 22:05:03,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.40ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 33.0MB in the end (delta: 22.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-04-24 22:05:03,786 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.68ms. Allocated memory is still 83.9MB. Free memory was 33.0MB in the beginning and 30.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 22:05:03,787 INFO L158 Benchmark]: Boogie Preprocessor took 28.52ms. Allocated memory is still 83.9MB. Free memory was 30.9MB in the beginning and 29.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-04-24 22:05:03,787 INFO L158 Benchmark]: RCFGBuilder took 413.89ms. Allocated memory is still 83.9MB. Free memory was 29.3MB in the beginning and 26.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2025-04-24 22:05:03,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 18.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.40ms. Allocated memory is still 83.9MB. Free memory was 55.8MB in the beginning and 33.0MB in the end (delta: 22.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.68ms. Allocated memory is still 83.9MB. Free memory was 33.0MB in the beginning and 30.9MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.52ms. Allocated memory is still 83.9MB. Free memory was 30.9MB in the beginning and 29.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 413.89ms. Allocated memory is still 83.9MB. Free memory was 29.3MB in the beginning and 26.7MB in the end (delta: 2.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: ). Is there illegal control flow (e.g. loops) within an atomic block? de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: ). Is there illegal control flow (e.g. loops) within an atomic block?: de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.AtomicBlockAnalyzer.ensureAtomicCompositionComplete(AtomicBlockAnalyzer.java:146) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2025-04-24 22:05:03,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: ). Is there illegal control flow (e.g. loops) within an atomic block?