./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:46:55,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:46:55,484 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 10:46:55,490 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:46:55,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:46:55,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:46:55,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:46:55,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:46:55,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:46:55,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:46:55,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:46:55,518 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:46:55,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:46:55,519 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:46:55,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:46:55,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:46:55,520 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 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 ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2025-03-17 10:46:55,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:46:55,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:46:55,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:46:55,750 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:46:55,750 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:46:55,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-03-17 10:46:56,899 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5531fbf1/88f7e94f7fcf4d67b3df37cb835f2cc3/FLAGa63d109ab [2025-03-17 10:46:57,182 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:46:57,183 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-03-17 10:46:57,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5531fbf1/88f7e94f7fcf4d67b3df37cb835f2cc3/FLAGa63d109ab [2025-03-17 10:46:57,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5531fbf1/88f7e94f7fcf4d67b3df37cb835f2cc3 [2025-03-17 10:46:57,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:46:57,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:46:57,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:46:57,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:46:57,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:46:57,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e35fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57, skipping insertion in model container [2025-03-17 10:46:57,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:46:57,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:46:57,729 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:46:57,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:46:57,788 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:46:57,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57 WrapperNode [2025-03-17 10:46:57,789 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:46:57,790 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:46:57,790 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:46:57,790 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:46:57,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,822 INFO L138 Inliner]: procedures = 172, calls = 20, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 183 [2025-03-17 10:46:57,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:46:57,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:46:57,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:46:57,824 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:46:57,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,836 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,844 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,847 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,850 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:46:57,856 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:46:57,856 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:46:57,856 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:46:57,857 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:46:57" (1/1) ... [2025-03-17 10:46:57,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:46:57,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:46:57,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 10:46:57,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 10:46:57,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 10:46:57,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:46:57,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:46:57,909 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 10:46:57,994 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:46:57,996 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:46:58,141 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc ~#l~0#1.base, ~#l~0#1.offset; [2025-03-17 10:46:58,141 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(~#l~0#1.base, ~#l~0#1.offset); srcloc: null [2025-03-17 10:46:58,240 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc thr1_~#l~0#1.base, thr1_~#l~0#1.offset; [2025-03-17 10:46:58,240 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(thr1_~#l~0#1.base, thr1_~#l~0#1.offset); srcloc: null [2025-03-17 10:46:58,241 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 10:46:58,241 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:46:58,373 WARN L170 LargeBlockEncoding]: Complex 2:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:46:58,381 WARN L170 LargeBlockEncoding]: Complex 2:5 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:46:58,400 WARN L170 LargeBlockEncoding]: Complex 2:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:46:58,406 WARN L170 LargeBlockEncoding]: Complex 2:5 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:46:58,438 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: call #t~mem6#1 := read~int(~#l~0#1.base, ~#l~0#1.offset, 4);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,1 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,2 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,3 + ~#l~0#1.offset := 0];assume ((0 == #race[~#l~0#1.base,~#l~0#1.offset] && 0 == #race[~#l~0#1.base,1 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,2 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,3 + ~#l~0#1.offset];#race~s~0 := 0;assume 0 == #race~s~0;assume #t~mem6#1 % 4294967296 != ~s~0 % 4294967296;havoc #t~mem6#1;call #t~mem6#1 := read~int(~#l~0#1.base, ~#l~0#1.offset, 4);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,1 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,2 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,3 + ~#l~0#1.offset := 0];assume ((0 == #race[~#l~0#1.base,~#l~0#1.offset] && 0 == #race[~#l~0#1.base,1 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,2 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,3 + ~#l~0#1.offset];#race~s~0 := 0;assume 0 == #race~s~0;). 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.icfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:323) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.IcfgBuilderObserver.process(IcfgBuilderObserver.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) [2025-03-17 10:46:58,443 INFO L158 Benchmark]: Toolchain (without parser) took 967.48ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 105.5MB in the end (delta: 7.0MB). Peak memory consumption was 82.2MB. Max. memory is 16.1GB. [2025-03-17 10:46:58,443 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 122.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 10:46:58,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.90ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 92.7MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 10:46:58,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.73ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.2MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 10:46:58,445 INFO L158 Benchmark]: Boogie Preprocessor took 27.69ms. Allocated memory is still 142.6MB. Free memory was 90.2MB in the beginning and 88.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 10:46:58,445 INFO L158 Benchmark]: IcfgBuilder took 585.69ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 105.5MB in the end (delta: -16.7MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2025-03-17 10:46:58,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 201.3MB. Free memory is still 122.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.90ms. Allocated memory is still 142.6MB. Free memory was 112.0MB in the beginning and 92.7MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.73ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 90.2MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.69ms. Allocated memory is still 142.6MB. Free memory was 90.2MB in the beginning and 88.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 585.69ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 105.5MB in the end (delta: -16.7MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: call #t~mem6#1 := read~int(~#l~0#1.base, ~#l~0#1.offset, 4);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,1 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,2 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,3 + ~#l~0#1.offset := 0];assume ((0 == #race[~#l~0#1.base,~#l~0#1.offset] && 0 == #race[~#l~0#1.base,1 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,2 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,3 + ~#l~0#1.offset];#race~s~0 := 0;assume 0 == #race~s~0;assume #t~mem6#1 % 4294967296 != ~s~0 % 4294967296;havoc #t~mem6#1;call #t~mem6#1 := read~int(~#l~0#1.base, ~#l~0#1.offset, 4);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,1 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,2 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,3 + ~#l~0#1.offset := 0];assume ((0 == #race[~#l~0#1.base,~#l~0#1.offset] && 0 == #race[~#l~0#1.base,1 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,2 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,3 + ~#l~0#1.offset];#race~s~0 := 0;assume 0 == #race~s~0;). Is there illegal control flow (e.g. loops) within an atomic block? de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: call #t~mem6#1 := read~int(~#l~0#1.base, ~#l~0#1.offset, 4);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,1 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,2 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,3 + ~#l~0#1.offset := 0];assume ((0 == #race[~#l~0#1.base,~#l~0#1.offset] && 0 == #race[~#l~0#1.base,1 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,2 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,3 + ~#l~0#1.offset];#race~s~0 := 0;assume 0 == #race~s~0;assume #t~mem6#1 % 4294967296 != ~s~0 % 4294967296;havoc #t~mem6#1;call #t~mem6#1 := read~int(~#l~0#1.base, ~#l~0#1.offset, 4);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,1 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,2 + ~#l~0#1.offset := 0];#race := #race[~#l~0#1.base,3 + ~#l~0#1.offset := 0];assume ((0 == #race[~#l~0#1.base,~#l~0#1.offset] && 0 == #race[~#l~0#1.base,1 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,2 + ~#l~0#1.offset]) && 0 == #race[~#l~0#1.base,3 + ~#l~0#1.offset];#race~s~0 := 0;assume 0 == #race~s~0;). 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. [2025-03-17 10:46:58,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:47:00,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:47:00,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf [2025-03-17 10:47:00,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:47:00,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:47:00,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:47:00,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:47:00,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:47:00,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:47:00,404 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:47:00,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:47:00,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:47:00,405 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:47:00,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:47:00,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:47:00,405 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:47:00,405 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:47:00,406 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:47:00,407 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:47:00,407 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:47:00,407 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:47:00,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:47:00,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:47:00,407 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:47:00,407 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:47:00,408 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 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 ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 [2025-03-17 10:47:00,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:47:00,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:47:00,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:47:00,646 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:47:00,646 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:47:00,647 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-03-17 10:47:01,854 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c24e26ce1/00d2bcf1fa154b32806f4e300b255cd2/FLAG22042dc73 [2025-03-17 10:47:02,078 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:47:02,080 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-03-17 10:47:02,093 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c24e26ce1/00d2bcf1fa154b32806f4e300b255cd2/FLAG22042dc73 [2025-03-17 10:47:02,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c24e26ce1/00d2bcf1fa154b32806f4e300b255cd2 [2025-03-17 10:47:02,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:47:02,414 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:47:02,415 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:47:02,415 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:47:02,418 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:47:02,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,419 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464e9874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02, skipping insertion in model container [2025-03-17 10:47:02,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,447 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:47:02,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:47:02,630 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:47:02,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:47:02,685 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:47:02,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02 WrapperNode [2025-03-17 10:47:02,686 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:47:02,687 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:47:02,687 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:47:02,687 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:47:02,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,726 INFO L138 Inliner]: procedures = 175, calls = 20, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 183 [2025-03-17 10:47:02,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:47:02,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:47:02,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:47:02,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:47:02,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,744 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:47:02,749 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:47:02,749 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:47:02,749 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:47:02,750 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:47:02" (1/1) ... [2025-03-17 10:47:02,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:47:02,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:47:02,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 10:47:02,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 10:47:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-03-17 10:47:02,796 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 10:47:02,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 10:47:02,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:47:02,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:47:02,798 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 10:47:02,901 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:47:02,903 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:47:03,053 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc ~#l~0#1.base, ~#l~0#1.offset; [2025-03-17 10:47:03,055 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(~#l~0#1.base, ~#l~0#1.offset); srcloc: null [2025-03-17 10:47:03,186 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc thr1_~#l~0#1.base, thr1_~#l~0#1.offset; [2025-03-17 10:47:03,187 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(thr1_~#l~0#1.base, thr1_~#l~0#1.offset); srcloc: null [2025-03-17 10:47:03,188 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 10:47:03,188 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:47:03,367 WARN L170 LargeBlockEncoding]: Complex 2:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:47:03,373 WARN L170 LargeBlockEncoding]: Complex 2:5 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:47:03,390 WARN L170 LargeBlockEncoding]: Complex 2:4 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:47:03,397 WARN L170 LargeBlockEncoding]: Complex 2:5 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-17 10:47:03,417 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;assume #t~mem6#1 != ~s~0;havoc #t~mem6#1;call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;). 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.icfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:323) at de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.IcfgBuilderObserver.process(IcfgBuilderObserver.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) [2025-03-17 10:47:03,425 INFO L158 Benchmark]: Toolchain (without parser) took 1009.27ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 56.6MB in the beginning and 62.2MB in the end (delta: -5.6MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2025-03-17 10:47:03,425 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 17.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 10:47:03,425 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.24ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 35.7MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 10:47:03,426 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.45ms. Allocated memory is still 83.9MB. Free memory was 35.7MB in the beginning and 33.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 10:47:03,426 INFO L158 Benchmark]: Boogie Preprocessor took 22.10ms. Allocated memory is still 83.9MB. Free memory was 33.3MB in the beginning and 31.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 10:47:03,426 INFO L158 Benchmark]: IcfgBuilder took 673.05ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 31.3MB in the beginning and 62.2MB in the end (delta: -30.9MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2025-03-17 10:47:03,427 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.4MB in the end (delta: 17.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.24ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 35.7MB in the end (delta: 20.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.45ms. Allocated memory is still 83.9MB. Free memory was 35.7MB in the beginning and 33.3MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.10ms. Allocated memory is still 83.9MB. Free memory was 33.3MB in the beginning and 31.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 673.05ms. Allocated memory was 83.9MB in the beginning and 125.8MB in the end (delta: 41.9MB). Free memory was 31.3MB in the beginning and 62.2MB in the end (delta: -30.9MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;assume #t~mem6#1 != ~s~0;havoc #t~mem6#1;call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;). Is there illegal control flow (e.g. loops) within an atomic block? de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;assume #t~mem6#1 != ~s~0;havoc #t~mem6#1;call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;). 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. [2025-03-17 10:47:03,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-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: call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;assume #t~mem6#1 != ~s~0;havoc #t~mem6#1;call #t~mem6#1 := read~intINTTYPE4(~#l~0#1.base, ~#l~0#1.offset, 4bv32);#race := #race[~#l~0#1.base,~#l~0#1.offset := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset) := 0bv1];#race := #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset) := 0bv1];assume ((0bv1 == #race[~#l~0#1.base,~#l~0#1.offset] && 0bv1 == #race[~#l~0#1.base,~bvadd~32(1bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(2bv32, ~#l~0#1.offset)]) && 0bv1 == #race[~#l~0#1.base,~bvadd~32(3bv32, ~#l~0#1.offset)];#race~s~0 := 0bv1;assume 0bv1 == #race~s~0;). Is there illegal control flow (e.g. loops) within an atomic block?