./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/queue_longest.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:14:19,821 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:14:19,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:14:19,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:14:19,877 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:14:19,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:14:19,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:14:19,896 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:14:19,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:14:19,896 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:14:19,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:14:19,896 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:14:19,896 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:14:19,896 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:14:19,896 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:14:19,896 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:14:19,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:14:19,897 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:14:19,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:14:19,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:14:19,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:14:19,899 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:14:19,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:14:19,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:14:19,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:14:19,900 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:14:19,900 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:14:19,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:14:19,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:14:19,900 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-jdk21/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 ! call(reach_error())) ) 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 -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2025-02-06 04:14:20,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:14:20,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:14:20,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:14:20,112 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:14:20,112 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:14:20,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_longest.i [2025-02-06 04:14:21,324 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3a999d0e2/1d77317b0c7f422eaa78b909c4c4877c/FLAG63474f1c9 [2025-02-06 04:14:21,690 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:14:21,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i [2025-02-06 04:14:21,714 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3a999d0e2/1d77317b0c7f422eaa78b909c4c4877c/FLAG63474f1c9 [2025-02-06 04:14:21,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3a999d0e2/1d77317b0c7f422eaa78b909c4c4877c [2025-02-06 04:14:21,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:14:21,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:14:21,932 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:14:21,933 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:14:21,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:14:21,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:14:21" (1/1) ... [2025-02-06 04:14:21,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432da7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:21, skipping insertion in model container [2025-02-06 04:14:21,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:14:21" (1/1) ... [2025-02-06 04:14:21,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:14:22,382 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2025-02-06 04:14:22,386 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2025-02-06 04:14:22,388 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2025-02-06 04:14:22,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:14:22,429 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:14:22,461 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2025-02-06 04:14:22,462 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2025-02-06 04:14:22,463 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2025-02-06 04:14:22,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:14:22,578 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:14:22,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22 WrapperNode [2025-02-06 04:14:22,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:14:22,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:14:22,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:14:22,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:14:22,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,720 INFO L138 Inliner]: procedures = 274, calls = 1656, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 1834 [2025-02-06 04:14:22,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:14:22,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:14:22,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:14:22,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:14:22,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,792 INFO L175 MemorySlicer]: Split 1644 memory accesses to 4 slices as follows [2, 5, 803, 834]. 51 percent of accesses are in the largest equivalence class. The 1610 initializations are split as follows [2, 5, 800, 803]. The 16 writes are split as follows [0, 0, 2, 14]. [2025-02-06 04:14:22,792 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,792 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,897 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,907 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,923 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:14:22,925 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:14:22,925 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:14:22,925 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:14:22,926 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:14:22" (1/1) ... [2025-02-06 04:14:22,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:14:22,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:14:22,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:14:22,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:14:22,965 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2025-02-06 04:14:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2025-02-06 04:14:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2025-02-06 04:14:22,966 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2025-02-06 04:14:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-06 04:14:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:14:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:14:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 04:14:22,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:14:22,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 04:14:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-06 04:14:22,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:14:22,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:14:22,969 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:14:23,095 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:14:23,096 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:14:24,617 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:14:24,618 INFO L308 CfgBuilder]: Performing block encoding