./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:01,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:02,050 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:11:02,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:02,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:02,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:02,080 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:02,081 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:02,081 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:02,081 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:02,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:02,082 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:02,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:02,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:02,082 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:02,082 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:02,082 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:02,083 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:02,084 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:02,084 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:02,084 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:02,084 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:02,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:02,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:02,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:02,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:02,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:02,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:02,085 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:11:02,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:11:02,085 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:02,085 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:02,085 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:02,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:02,085 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2025-02-08 08:11:02,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:02,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:02,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:02,414 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:02,414 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:02,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2025-02-08 08:11:03,768 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6e35e8a5d/e1e0759522bb4a1a81db8253164a3daf/FLAG8af368c2c [2025-02-08 08:11:04,150 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:04,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2025-02-08 08:11:04,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6e35e8a5d/e1e0759522bb4a1a81db8253164a3daf/FLAG8af368c2c [2025-02-08 08:11:04,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6e35e8a5d/e1e0759522bb4a1a81db8253164a3daf [2025-02-08 08:11:04,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:04,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:04,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:04,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:04,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:04,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664495e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04, skipping insertion in model container [2025-02-08 08:11:04,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,246 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:04,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:04,614 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:04,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:04,755 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:04,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04 WrapperNode [2025-02-08 08:11:04,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:04,757 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:04,757 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:04,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:04,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,800 INFO L138 Inliner]: procedures = 323, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2025-02-08 08:11:04,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:04,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:04,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:04,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:04,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,842 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 08:11:04,842 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,853 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:04,870 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:04,870 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:04,870 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:04,871 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (1/1) ... [2025-02-08 08:11:04,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:04,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:04,907 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) [2025-02-08 08:11:04,914 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 [2025-02-08 08:11:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:11:04,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:11:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-02-08 08:11:04,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-02-08 08:11:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:11:04,933 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:11:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:11:04,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:11:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:11:04,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:11:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:11:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:11:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:11:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:11:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:11:04,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:04,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:04,936 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:11:05,078 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:05,079 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:05,269 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:05,270 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:05,356 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:05,356 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:05,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:05 BoogieIcfgContainer [2025-02-08 08:11:05,357 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:05,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:05,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:05,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:05,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:04" (1/3) ... [2025-02-08 08:11:05,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a69776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:05, skipping insertion in model container [2025-02-08 08:11:05,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04" (2/3) ... [2025-02-08 08:11:05,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a69776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:05, skipping insertion in model container [2025-02-08 08:11:05,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:05" (3/3) ... [2025-02-08 08:11:05,366 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2025-02-08 08:11:05,379 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:05,381 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton_with-uninit-problems.i that has 5 procedures, 54 locations, 1 initial locations, 0 loop locations, and 10 error locations. [2025-02-08 08:11:05,381 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:05,510 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-02-08 08:11:05,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 287 flow [2025-02-08 08:11:05,603 INFO L124 PetriNetUnfolderBase]: 8/67 cut-off events. [2025-02-08 08:11:05,606 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 08:11:05,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 67 events. 8/67 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 76. Up to 3 conditions per place. [2025-02-08 08:11:05,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 287 flow [2025-02-08 08:11:05,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 66 transitions, 183 flow [2025-02-08 08:11:05,628 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:11:05,642 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7242724, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:11:05,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-02-08 08:11:05,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:11:05,652 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-02-08 08:11:05,652 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:11:05,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:05,653 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:05,654 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 26 more)] === [2025-02-08 08:11:05,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash -767249266, now seen corresponding path program 1 times [2025-02-08 08:11:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:05,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220589953] [2025-02-08 08:11:05,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:05,758 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:11:05,778 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:11:05,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:05,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:05,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220589953] [2025-02-08 08:11:05,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220589953] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:05,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:05,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:11:05,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478169489] [2025-02-08 08:11:05,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:05,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:06,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:06,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:06,033 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 97 [2025-02-08 08:11:06,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:06,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:06,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 97 [2025-02-08 08:11:06,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:06,837 INFO L124 PetriNetUnfolderBase]: 4536/6226 cut-off events. [2025-02-08 08:11:06,838 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2025-02-08 08:11:06,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13015 conditions, 6226 events. 4536/6226 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32302 event pairs, 3591 based on Foata normal form. 2/4647 useless extension candidates. Maximal degree in co-relation 12980. Up to 6078 conditions per place. [2025-02-08 08:11:06,898 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 46 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2025-02-08 08:11:06,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 263 flow [2025-02-08 08:11:06,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2025-02-08 08:11:06,913 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41580756013745707 [2025-02-08 08:11:06,914 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 183 flow. Second operand 3 states and 121 transitions. [2025-02-08 08:11:06,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 263 flow [2025-02-08 08:11:06,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 229 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-02-08 08:11:06,938 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 133 flow [2025-02-08 08:11:06,940 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-02-08 08:11:06,943 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -17 predicate places. [2025-02-08 08:11:06,945 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 133 flow [2025-02-08 08:11:06,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:06,945 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:06,946 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:06,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:11:06,947 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 26 more)] === [2025-02-08 08:11:06,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1624339857, now seen corresponding path program 1 times [2025-02-08 08:11:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284997672] [2025-02-08 08:11:06,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:06,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:06,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:11:06,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:11:06,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:06,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:07,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:11:07,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284997672] [2025-02-08 08:11:07,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284997672] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:11:07,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759638767] [2025-02-08 08:11:07,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:07,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:11:07,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:07,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:07,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 97 [2025-02-08 08:11:07,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:07,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:07,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 97 [2025-02-08 08:11:07,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:07,437 INFO L124 PetriNetUnfolderBase]: 1485/2129 cut-off events. [2025-02-08 08:11:07,438 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 08:11:07,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 2129 events. 1485/2129 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9283 event pairs, 1115 based on Foata normal form. 0/2020 useless extension candidates. Maximal degree in co-relation 2395. Up to 2057 conditions per place. [2025-02-08 08:11:07,450 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 42 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2025-02-08 08:11:07,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 211 flow [2025-02-08 08:11:07,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:07,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2025-02-08 08:11:07,452 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3951890034364261 [2025-02-08 08:11:07,452 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 133 flow. Second operand 3 states and 115 transitions. [2025-02-08 08:11:07,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 211 flow [2025-02-08 08:11:07,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:11:07,454 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 122 flow [2025-02-08 08:11:07,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2025-02-08 08:11:07,455 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -22 predicate places. [2025-02-08 08:11:07,456 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 122 flow [2025-02-08 08:11:07,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:07,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:07,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:07,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:11:07,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 26 more)] === [2025-02-08 08:11:07,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1860586684, now seen corresponding path program 1 times [2025-02-08 08:11:07,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:11:07,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464017427] [2025-02-08 08:11:07,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:11:07,480 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 08:11:07,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 08:11:07,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:07,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:07,509 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:11:07,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 08:11:07,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 08:11:07,545 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:07,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:07,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:11:07,587 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:11:07,587 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (28 of 29 remaining) [2025-02-08 08:11:07,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 29 remaining) [2025-02-08 08:11:07,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 29 remaining) [2025-02-08 08:11:07,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 29 remaining) [2025-02-08 08:11:07,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 29 remaining) [2025-02-08 08:11:07,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 29 remaining) [2025-02-08 08:11:07,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2025-02-08 08:11:07,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2025-02-08 08:11:07,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2025-02-08 08:11:07,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2025-02-08 08:11:07,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2025-02-08 08:11:07,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (14 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 29 remaining) [2025-02-08 08:11:07,592 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2025-02-08 08:11:07,593 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2025-02-08 08:11:07,594 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 29 remaining) [2025-02-08 08:11:07,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:11:07,594 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-08 08:11:07,672 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:11:07,673 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:11:07,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:11:07 BasicIcfg [2025-02-08 08:11:07,682 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:11:07,682 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:11:07,682 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:11:07,683 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:11:07,683 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:05" (3/4) ... [2025-02-08 08:11:07,685 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:11:07,685 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:11:07,686 INFO L158 Benchmark]: Toolchain (without parser) took 3490.41ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 103.8MB in the beginning and 147.6MB in the end (delta: -43.9MB). Peak memory consumption was 101.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,687 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 192.9MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:07,687 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.24ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 71.2MB in the end (delta: 32.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.78ms. Allocated memory is still 142.6MB. Free memory was 71.2MB in the beginning and 69.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:07,689 INFO L158 Benchmark]: Boogie Preprocessor took 67.82ms. Allocated memory is still 142.6MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:07,689 INFO L158 Benchmark]: IcfgBuilder took 487.00ms. Allocated memory is still 142.6MB. Free memory was 67.3MB in the beginning and 44.4MB in the end (delta: 22.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,690 INFO L158 Benchmark]: TraceAbstraction took 2322.88ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 44.0MB in the beginning and 147.7MB in the end (delta: -103.6MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,690 INFO L158 Benchmark]: Witness Printer took 3.16ms. Allocated memory is still 285.2MB. Free memory was 147.7MB in the beginning and 147.6MB in the end (delta: 15.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:07,692 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 192.9MB. Free memory is still 120.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.24ms. Allocated memory is still 142.6MB. Free memory was 103.3MB in the beginning and 71.2MB in the end (delta: 32.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.78ms. Allocated memory is still 142.6MB. Free memory was 71.2MB in the beginning and 69.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.82ms. Allocated memory is still 142.6MB. Free memory was 69.4MB in the beginning and 67.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 487.00ms. Allocated memory is still 142.6MB. Free memory was 67.3MB in the beginning and 44.4MB in the end (delta: 22.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2322.88ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 44.0MB in the beginning and 147.7MB in the end (delta: -103.6MB). Peak memory consumption was 50.9MB. Max. memory is 16.1GB. * Witness Printer took 3.16ms. Allocated memory is still 285.2MB. Free memory was 147.7MB in the beginning and 147.6MB in the end (delta: 15.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1159]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1159. Possible FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\old(arg)={0:0}, t=-3, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, t1=-2, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-2, v={-2:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, v={-2:0}] [L1133] 3 v[0] = 'X' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, v={-2:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, v={-2:0}] [L1140] 4 v[0] = 'Y' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, v={-2:0}] [L1135] 3 return 0; [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, v={-2:0}] [L1133] 5 v[0] = 'X' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, v={-2:0}] [L1142] 4 return 0; [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1133] 6 v[0] = 'X' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1135] 5 return 0; [L1135] 6 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, t=-3, v={-2:0}] [L1164] EXPR 0 v[0] [L1164] EXPR 0 v[0] == 'X' || v[0] == 'Y' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, t=-3, v={-2:0}] [L1164] EXPR 0 v[0] == 'X' || v[0] == 'Y' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1123] COND FALSE 0 !(!expression) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, t1=-2, t2=-1, t3=0, t4=1, t5=2, v={-2:0}] [L1164] RET 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1165] 0 return 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-2, t2=-1, t3=0, t4=1, t5=2, t=-3, v={-2:0}] - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 110 locations, 29 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 114 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 5 mSDtfsCounter, 114 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:11:07,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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-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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:10,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:10,094 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:11:10,100 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:10,100 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:10,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:10,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:10,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:10,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:10,132 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:10,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:10,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:10,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:10,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:10,133 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:10,134 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:10,134 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:10,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:10,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:10,137 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:10,137 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:10,137 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:11:10,137 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:11:10,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:10,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:10,138 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:10,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:10,138 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2025-02-08 08:11:10,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:10,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:10,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:10,467 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:10,468 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:10,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2025-02-08 08:11:11,828 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5175cf799/c6c70ad04de1445c88cc86b66a33cac3/FLAG53285cb36 [2025-02-08 08:11:12,140 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:12,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2025-02-08 08:11:12,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5175cf799/c6c70ad04de1445c88cc86b66a33cac3/FLAG53285cb36 [2025-02-08 08:11:12,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5175cf799/c6c70ad04de1445c88cc86b66a33cac3 [2025-02-08 08:11:12,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:12,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:12,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:12,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:12,191 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:12,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:12,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582e76d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12, skipping insertion in model container [2025-02-08 08:11:12,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:12,235 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:12,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:12,793 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:12,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:12,957 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:12,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12 WrapperNode [2025-02-08 08:11:12,958 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:12,959 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:12,959 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:12,959 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:12,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:12,984 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,004 INFO L138 Inliner]: procedures = 324, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 37 [2025-02-08 08:11:13,004 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:13,005 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:13,005 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:13,005 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:13,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,017 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,029 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-08 08:11:13,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,037 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,043 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:13,044 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:13,044 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:13,044 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:13,045 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (1/1) ... [2025-02-08 08:11:13,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:13,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:13,076 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) [2025-02-08 08:11:13,079 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 [2025-02-08 08:11:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 08:11:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 08:11:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2025-02-08 08:11:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2025-02-08 08:11:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-02-08 08:11:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:11:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:11:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:11:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:13,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:13,104 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:11:13,254 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:13,255 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:13,581 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:13,582 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:13,687 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:13,687 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:13,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:13 BoogieIcfgContainer [2025-02-08 08:11:13,688 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:13,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:13,693 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:13,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:13,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:12" (1/3) ... [2025-02-08 08:11:13,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6803a2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:13, skipping insertion in model container [2025-02-08 08:11:13,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:12" (2/3) ... [2025-02-08 08:11:13,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6803a2d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:13, skipping insertion in model container [2025-02-08 08:11:13,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:13" (3/3) ... [2025-02-08 08:11:13,700 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2025-02-08 08:11:13,711 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:13,712 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton_with-uninit-problems.i that has 5 procedures, 54 locations, 1 initial locations, 0 loop locations, and 10 error locations. [2025-02-08 08:11:13,712 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:13,853 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-02-08 08:11:13,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 287 flow [2025-02-08 08:11:13,939 INFO L124 PetriNetUnfolderBase]: 8/67 cut-off events. [2025-02-08 08:11:13,943 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 08:11:13,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 67 events. 8/67 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 76. Up to 3 conditions per place. [2025-02-08 08:11:13,949 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 287 flow [2025-02-08 08:11:13,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 66 transitions, 183 flow [2025-02-08 08:11:13,962 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:11:13,978 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d4ed103, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:11:13,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-02-08 08:11:13,987 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:11:13,987 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-02-08 08:11:13,987 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:11:13,987 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:13,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:13,989 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 26 more)] === [2025-02-08 08:11:13,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1245674320, now seen corresponding path program 1 times [2025-02-08 08:11:14,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774373617] [2025-02-08 08:11:14,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:14,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:14,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:14,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:14,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:11:14,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:11:14,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:11:14,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:14,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:14,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:11:14,139 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:14,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-02-08 08:11:14,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:14,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:14,222 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:14,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774373617] [2025-02-08 08:11:14,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774373617] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:14,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:14,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:11:14,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643878382] [2025-02-08 08:11:14,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:14,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:14,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:14,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:14,296 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 97 [2025-02-08 08:11:14,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:14,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:14,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 97 [2025-02-08 08:11:14,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:15,336 INFO L124 PetriNetUnfolderBase]: 4536/6226 cut-off events. [2025-02-08 08:11:15,336 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2025-02-08 08:11:15,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13015 conditions, 6226 events. 4536/6226 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32395 event pairs, 3591 based on Foata normal form. 2/4649 useless extension candidates. Maximal degree in co-relation 12980. Up to 6078 conditions per place. [2025-02-08 08:11:15,407 INFO L140 encePairwiseOnDemand]: 88/97 looper letters, 46 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2025-02-08 08:11:15,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 263 flow [2025-02-08 08:11:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:15,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2025-02-08 08:11:15,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41580756013745707 [2025-02-08 08:11:15,422 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 183 flow. Second operand 3 states and 121 transitions. [2025-02-08 08:11:15,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 263 flow [2025-02-08 08:11:15,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 229 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-02-08 08:11:15,445 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 133 flow [2025-02-08 08:11:15,448 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2025-02-08 08:11:15,453 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -17 predicate places. [2025-02-08 08:11:15,453 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 133 flow [2025-02-08 08:11:15,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:15,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:15,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:15,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:11:15,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:15,656 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 26 more)] === [2025-02-08 08:11:15,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:15,656 INFO L85 PathProgramCache]: Analyzing trace with hash 388583729, now seen corresponding path program 1 times [2025-02-08 08:11:15,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:15,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318747084] [2025-02-08 08:11:15,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:15,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:15,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:15,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:15,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:11:15,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:11:15,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:11:15,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:15,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:15,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:11:15,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:15,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-08 08:11:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:11:15,835 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:15,835 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318747084] [2025-02-08 08:11:15,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318747084] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:15,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:15,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:11:15,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725865311] [2025-02-08 08:11:15,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:15,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:15,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:15,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:15,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:15,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 97 [2025-02-08 08:11:15,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:15,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:15,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 97 [2025-02-08 08:11:15,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:16,179 INFO L124 PetriNetUnfolderBase]: 1485/2129 cut-off events. [2025-02-08 08:11:16,180 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 08:11:16,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4288 conditions, 2129 events. 1485/2129 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9265 event pairs, 1115 based on Foata normal form. 0/2022 useless extension candidates. Maximal degree in co-relation 2395. Up to 2057 conditions per place. [2025-02-08 08:11:16,195 INFO L140 encePairwiseOnDemand]: 90/97 looper letters, 42 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2025-02-08 08:11:16,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 211 flow [2025-02-08 08:11:16,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2025-02-08 08:11:16,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3951890034364261 [2025-02-08 08:11:16,197 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 133 flow. Second operand 3 states and 115 transitions. [2025-02-08 08:11:16,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 211 flow [2025-02-08 08:11:16,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:11:16,199 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 122 flow [2025-02-08 08:11:16,199 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2025-02-08 08:11:16,202 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -22 predicate places. [2025-02-08 08:11:16,202 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 122 flow [2025-02-08 08:11:16,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:11:16,203 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:16,203 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:16,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:11:16,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:16,404 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 26 more)] === [2025-02-08 08:11:16,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:16,404 INFO L85 PathProgramCache]: Analyzing trace with hash -20222722, now seen corresponding path program 1 times [2025-02-08 08:11:16,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:16,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264359583] [2025-02-08 08:11:16,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:16,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:16,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:16,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:11:16,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:11:16,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 08:11:16,539 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 08:11:16,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:16,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:16,539 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:11:16,561 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 08:11:16,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 08:11:16,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:16,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:16,639 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 08:11:16,639 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:11:16,640 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (28 of 29 remaining) [2025-02-08 08:11:16,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 29 remaining) [2025-02-08 08:11:16,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (14 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork2Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 29 remaining) [2025-02-08 08:11:16,644 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 29 remaining) [2025-02-08 08:11:16,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 29 remaining) [2025-02-08 08:11:16,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 29 remaining) [2025-02-08 08:11:16,645 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 29 remaining) [2025-02-08 08:11:16,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 08:11:16,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:16,846 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-08 08:11:16,935 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:11:16,935 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:11:16,941 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:11:16 BasicIcfg [2025-02-08 08:11:16,941 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:11:16,942 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:11:16,942 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:11:16,942 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:11:16,943 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:13" (3/4) ... [2025-02-08 08:11:16,944 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:11:16,945 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:11:16,946 INFO L158 Benchmark]: Toolchain (without parser) took 4759.50ms. Allocated memory was 83.9MB in the beginning and 209.7MB in the end (delta: 125.8MB). Free memory was 56.3MB in the beginning and 65.1MB in the end (delta: -8.9MB). Peak memory consumption was 115.0MB. Max. memory is 16.1GB. [2025-02-08 08:11:16,946 INFO L158 Benchmark]: CDTParser took 1.05ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 17.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:16,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 770.38ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 50.9MB in the end (delta: 5.2MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2025-02-08 08:11:16,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.87ms. Allocated memory is still 83.9MB. Free memory was 50.9MB in the beginning and 48.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:16,947 INFO L158 Benchmark]: Boogie Preprocessor took 38.22ms. Allocated memory is still 83.9MB. Free memory was 48.8MB in the beginning and 46.7MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:11:16,947 INFO L158 Benchmark]: IcfgBuilder took 643.79ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 46.7MB in the beginning and 67.5MB in the end (delta: -20.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2025-02-08 08:11:16,947 INFO L158 Benchmark]: TraceAbstraction took 3248.02ms. Allocated memory was 109.1MB in the beginning and 209.7MB in the end (delta: 100.7MB). Free memory was 67.2MB in the beginning and 65.1MB in the end (delta: 2.0MB). Peak memory consumption was 101.0MB. Max. memory is 16.1GB. [2025-02-08 08:11:16,948 INFO L158 Benchmark]: Witness Printer took 3.39ms. Allocated memory is still 209.7MB. Free memory was 65.1MB in the beginning and 65.1MB in the end (delta: 15.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:16,949 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.05ms. Allocated memory is still 83.9MB. Free memory was 54.3MB in the beginning and 54.3MB in the end (delta: 17.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 770.38ms. Allocated memory is still 83.9MB. Free memory was 56.1MB in the beginning and 50.9MB in the end (delta: 5.2MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.87ms. Allocated memory is still 83.9MB. Free memory was 50.9MB in the beginning and 48.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.22ms. Allocated memory is still 83.9MB. Free memory was 48.8MB in the beginning and 46.7MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 643.79ms. Allocated memory was 83.9MB in the beginning and 109.1MB in the end (delta: 25.2MB). Free memory was 46.7MB in the beginning and 67.5MB in the end (delta: -20.8MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * TraceAbstraction took 3248.02ms. Allocated memory was 109.1MB in the beginning and 209.7MB in the end (delta: 100.7MB). Free memory was 67.2MB in the beginning and 65.1MB in the end (delta: 2.0MB). Peak memory consumption was 101.0MB. Max. memory is 16.1GB. * Witness Printer took 3.39ms. Allocated memory is still 209.7MB. Free memory was 65.1MB in the beginning and 65.1MB in the end (delta: 15.4kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1159]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1159. Possible FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [\old(arg)={0:0}, t=-5, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, t1=-4, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, v={4:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={4:0}] [L1133] 3 v[0] = 'X' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, v={4:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={4:0}] [L1140] 4 v[0] = 'Y' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, v={4:0}] [L1135] 3 return 0; [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={4:0}] [L1133] 5 v[0] = 'X' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, v={4:0}] [L1142] 4 return 0; [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1133] 6 v[0] = 'X' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1135] 5 return 0; [L1135] 6 return 0; [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={4:0}] [L1164] EXPR 0 v[0] [L1164] EXPR 0 v[0] == 'X' || v[0] == 'Y' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={4:0}] [L1164] EXPR 0 v[0] == 'X' || v[0] == 'Y' VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1123] COND FALSE 0 !(!expression) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, v={4:0}] [L1164] RET 0 __VERIFIER_assert(v[0] == 'X' || v[0] == 'Y') [L1165] 0 return 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \result=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={4:0}] - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 110 locations, 29 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 9 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 0 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:11:16,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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: UNKNOWN: Overapproximated counterexample