./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 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-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:10:06,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:10:06,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:10:06,720 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:10:06,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:10:06,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:10:06,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:10:06,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:10:06,743 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:10:06,743 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:10:06,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:10:06,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:10:06,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:10:06,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:10:06,744 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:10:06,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:10:06,744 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:10:06,745 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:10:06,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:10:06,746 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:10:06,746 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:10:06,746 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:10:06,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:10:06,746 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:10:06,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:10:06,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:10:06,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:10:06,748 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 ! overflow) ) 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 [2025-03-04 15:10:06,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:10:06,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:10:06,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:10:06,972 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:10:06,972 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:10:06,972 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-03-04 15:10:08,126 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/435963ba9/3d5e06a8afbf45a382ac3c80e74db309/FLAG8f3a97842 [2025-03-04 15:10:08,361 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:10:08,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-03-04 15:10:08,370 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/435963ba9/3d5e06a8afbf45a382ac3c80e74db309/FLAG8f3a97842 [2025-03-04 15:10:08,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/435963ba9/3d5e06a8afbf45a382ac3c80e74db309 [2025-03-04 15:10:08,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:10:08,676 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:10:08,677 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:10:08,677 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:10:08,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:10:08,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@238ff2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08, skipping insertion in model container [2025-03-04 15:10:08,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,707 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:10:08,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:10:08,900 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:10:08,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:10:08,956 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:10:08,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08 WrapperNode [2025-03-04 15:10:08,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:10:08,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:10:08,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:10:08,957 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:10:08,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,980 INFO L138 Inliner]: procedures = 172, calls = 20, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 103 [2025-03-04 15:10:08,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:10:08,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:10:08,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:10:08,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:10:08,986 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,996 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-03-04 15:10:08,996 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:08,996 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:09,000 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:09,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:09,001 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:09,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:09,003 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:10:09,004 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:10:09,004 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:10:09,004 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:10:09,005 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:08" (1/1) ... [2025-03-04 15:10:09,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:10:09,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:10:09,032 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) [2025-03-04 15:10:09,034 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 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-04 15:10:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:10:09,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:10:09,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:10:09,051 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:10:09,138 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:10:09,139 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:10:09,239 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc ~#l~0#1.base, ~#l~0#1.offset; [2025-03-04 15:10:09,239 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(~#l~0#1.base, ~#l~0#1.offset); srcloc: null [2025-03-04 15:10:09,326 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc thr1_~#l~0#1.base, thr1_~#l~0#1.offset; [2025-03-04 15:10:09,326 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(thr1_~#l~0#1.base, thr1_~#l~0#1.offset); srcloc: null [2025-03-04 15:10:09,327 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:10:09,327 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:10:09,454 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:09,457 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:09,471 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:09,478 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:09,487 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~mem4#1 := read~int#1(~#l~0#1.base, ~#l~0#1.offset, 4);assume #t~mem4#1 % 4294967296 != ~s~0 % 4294967296;havoc #t~mem4#1;call #t~mem4#1 := read~int#1(~#l~0#1.base, ~#l~0#1.offset, 4);). 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) [2025-03-04 15:10:09,493 INFO L158 Benchmark]: Toolchain (without parser) took 815.85ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 58.9MB in the end (delta: 51.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-04 15:10:09,493 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:10:09,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.21ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 91.1MB in the end (delta: 19.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:10:09,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.86ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:10:09,496 INFO L158 Benchmark]: Boogie Preprocessor took 22.38ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 88.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:10:09,496 INFO L158 Benchmark]: IcfgBuilder took 487.31ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 58.9MB in the end (delta: 29.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 15:10:09,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.21ms. Allocated memory is still 142.6MB. Free memory was 110.8MB in the beginning and 91.1MB in the end (delta: 19.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.86ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.3MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.38ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 88.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 487.31ms. Allocated memory is still 142.6MB. Free memory was 88.0MB in the beginning and 58.9MB in the end (delta: 29.1MB). Peak memory consumption was 25.2MB. 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~mem4#1 := read~int#1(~#l~0#1.base, ~#l~0#1.offset, 4);assume #t~mem4#1 % 4294967296 != ~s~0 % 4294967296;havoc #t~mem4#1;call #t~mem4#1 := read~int#1(~#l~0#1.base, ~#l~0#1.offset, 4);). 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~mem4#1 := read~int#1(~#l~0#1.base, ~#l~0#1.offset, 4);assume #t~mem4#1 % 4294967296 != ~s~0 % 4294967296;havoc #t~mem4#1;call #t~mem4#1 := read~int#1(~#l~0#1.base, ~#l~0#1.offset, 4);). 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. [2025-03-04 15:10:09,511 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-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31f5db4bc5916150a86a586587dbeca1bc7aa37b414274f5dc02856908270171 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:10:11,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:10:11,449 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf [2025-03-04 15:10:11,453 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:10:11,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:10:11,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:10:11,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:10:11,474 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:10:11,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:10:11,475 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:10:11,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:10:11,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:10:11,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:10:11,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:10:11,476 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:10:11,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:10:11,476 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:10:11,476 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:10:11,477 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-04 15:10:11,478 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:10:11,478 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:10:11,478 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:10:11,478 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:10:11,478 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:10:11,478 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:10:11,478 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:10:11,479 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:10:11,479 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:10:11,480 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:10:11,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:10:11,480 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 ! overflow) ) 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 [2025-03-04 15:10:11,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:10:11,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:10:11,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:10:11,757 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:10:11,758 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:10:11,761 INFO L431 ainManager$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 [2025-03-04 15:10:12,970 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3af3537/28f0dc04d25743f6a441a7236f5cbad5/FLAG33c9580d7 [2025-03-04 15:10:13,233 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:10:13,235 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs.i [2025-03-04 15:10:13,248 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3af3537/28f0dc04d25743f6a441a7236f5cbad5/FLAG33c9580d7 [2025-03-04 15:10:13,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b3af3537/28f0dc04d25743f6a441a7236f5cbad5 [2025-03-04 15:10:13,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:10:13,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:10:13,273 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:10:13,273 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:10:13,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:10:13,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b51a0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13, skipping insertion in model container [2025-03-04 15:10:13,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,314 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:10:13,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:10:13,575 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:10:13,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:10:13,651 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:10:13,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13 WrapperNode [2025-03-04 15:10:13,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:10:13,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:10:13,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:10:13,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:10:13,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,694 INFO L138 Inliner]: procedures = 175, calls = 20, calls flagged for inlining = 6, calls inlined = 9, statements flattened = 103 [2025-03-04 15:10:13,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:10:13,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:10:13,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:10:13,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:10:13,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,703 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,720 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-03-04 15:10:13,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,729 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:10:13,745 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:10:13,745 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:10:13,745 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:10:13,746 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:10:13" (1/1) ... [2025-03-04 15:10:13,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:10:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:10:13,774 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) [2025-03-04 15:10:13,777 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 [2025-03-04 15:10:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2025-03-04 15:10:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2025-03-04 15:10:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2025-03-04 15:10:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-04 15:10:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-04 15:10:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:10:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:10:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2025-03-04 15:10:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:10:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:10:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:10:13,802 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:10:13,903 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:10:13,904 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:10:13,984 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc ~#l~0#1.base, ~#l~0#1.offset; [2025-03-04 15:10:13,985 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(~#l~0#1.base, ~#l~0#1.offset); srcloc: null [2025-03-04 15:10:14,103 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: havoc thr1_~#l~0#1.base, thr1_~#l~0#1.offset; [2025-03-04 15:10:14,103 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L716-1: SUMMARY for call ULTIMATE.dealloc(thr1_~#l~0#1.base, thr1_~#l~0#1.offset); srcloc: null [2025-03-04 15:10:14,106 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:10:14,106 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:10:14,233 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:14,234 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:14,239 WARN L170 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:14,240 WARN L170 LargeBlockEncoding]: Complex 2:3 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-03-04 15:10:14,245 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~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume #t~mem4#1 != ~s~0;havoc #t~mem4#1;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). 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) [2025-03-04 15:10:14,250 INFO L158 Benchmark]: Toolchain (without parser) took 978.43ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 36.0MB in the end (delta: 22.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2025-03-04 15:10:14,250 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:10:14,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 380.03ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 37.5MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 15:10:14,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.91ms. Allocated memory is still 83.9MB. Free memory was 37.5MB in the beginning and 35.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:10:14,251 INFO L158 Benchmark]: Boogie Preprocessor took 49.57ms. Allocated memory is still 83.9MB. Free memory was 35.9MB in the beginning and 33.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:10:14,251 INFO L158 Benchmark]: IcfgBuilder took 503.53ms. Allocated memory is still 83.9MB. Free memory was 33.8MB in the beginning and 36.0MB in the end (delta: -2.2MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2025-03-04 15:10:14,252 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 380.03ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 37.5MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.91ms. Allocated memory is still 83.9MB. Free memory was 37.5MB in the beginning and 35.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.57ms. Allocated memory is still 83.9MB. Free memory was 35.9MB in the beginning and 33.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 503.53ms. Allocated memory is still 83.9MB. Free memory was 33.8MB in the beginning and 36.0MB in the end (delta: -2.2MB). Peak memory consumption was 20.9MB. 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~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume #t~mem4#1 != ~s~0;havoc #t~mem4#1;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). 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~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume #t~mem4#1 != ~s~0;havoc #t~mem4#1;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). 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. [2025-03-04 15:10:14,271 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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Incomplete atomic composition (dangling start of atomic block: call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);assume #t~mem4#1 != ~s~0;havoc #t~mem4#1;call #t~mem4#1 := read~intINTTYPE4#1(~#l~0#1.base, ~#l~0#1.offset, 4bv32);). Is there illegal control flow (e.g. loops) within an atomic block?