./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/singleton.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.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 ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:10:55,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:10:55,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:10:55,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:10:55,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:10:55,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:10:55,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:10:55,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:10:55,184 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:10:55,184 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:10:55,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:10:55,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:10:55,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:10:55,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:10:55,184 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:10:55,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:10:55,185 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:10:55,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:10:55,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:10:55,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:10:55,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:10:55,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:10:55,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:10:55,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:10:55,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:10:55,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:10:55,186 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 -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2025-02-08 08:10:55,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:10:55,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:10:55,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:10:55,429 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:10:55,430 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:10:55,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/singleton.i [2025-02-08 08:10:56,634 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b35cc7e1e/1bb332d90e194395a1229af5c1caf854/FLAG30aaad9a9 [2025-02-08 08:10:56,978 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:10:56,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/singleton.i [2025-02-08 08:10:56,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b35cc7e1e/1bb332d90e194395a1229af5c1caf854/FLAG30aaad9a9 [2025-02-08 08:10:57,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b35cc7e1e/1bb332d90e194395a1229af5c1caf854 [2025-02-08 08:10:57,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:10:57,228 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:10:57,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:10:57,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:10:57,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:10:57,232 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,233 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@344e6249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57, skipping insertion in model container [2025-02-08 08:10:57,233 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:10:57,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:10:57,578 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:10:57,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:10:57,659 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:10:57,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57 WrapperNode [2025-02-08 08:10:57,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:10:57,661 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:10:57,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:10:57,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:10:57,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,696 INFO L138 Inliner]: procedures = 323, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 30 [2025-02-08 08:10:57,697 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:10:57,697 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:10:57,697 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:10:57,697 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:10:57,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,714 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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 08:10:57,714 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,714 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,718 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,719 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,720 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:10:57,722 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:10:57,722 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:10:57,722 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:10:57,723 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (1/1) ... [2025-02-08 08:10:57,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:10:57,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:10:57,758 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 08:10:57,761 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 08:10:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-02-08 08:10:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:10:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:10:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:10:57,776 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 08:10:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:10:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:10:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:10:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 08:10:57,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:10:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:10:57,778 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 08:10:57,867 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:10:57,869 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:10:58,025 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:10:58,026 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:10:58,100 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:10:58,100 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:10:58,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:58 BoogieIcfgContainer [2025-02-08 08:10:58,100 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:10:58,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:10:58,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:10:58,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:10:58,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:10:57" (1/3) ... [2025-02-08 08:10:58,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613da24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:10:58, skipping insertion in model container [2025-02-08 08:10:58,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:10:57" (2/3) ... [2025-02-08 08:10:58,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@613da24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:10:58, skipping insertion in model container [2025-02-08 08:10:58,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:58" (3/3) ... [2025-02-08 08:10:58,107 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.i [2025-02-08 08:10:58,116 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:10:58,116 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-02-08 08:10:58,117 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:10:58,175 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-02-08 08:10:58,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 89 transitions, 275 flow [2025-02-08 08:10:58,238 INFO L124 PetriNetUnfolderBase]: 7/61 cut-off events. [2025-02-08 08:10:58,240 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 08:10:58,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 61 events. 7/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2025-02-08 08:10:58,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 89 transitions, 275 flow [2025-02-08 08:10:58,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 60 transitions, 171 flow [2025-02-08 08:10:58,249 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:10:58,256 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;@18e69538, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:10:58,256 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2025-02-08 08:10:58,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:10:58,260 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-02-08 08:10:58,260 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:10:58,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:58,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:10:58,261 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-02-08 08:10:58,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1087617540, now seen corresponding path program 1 times [2025-02-08 08:10:58,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:10:58,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336139430] [2025-02-08 08:10:58,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:58,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:10:58,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:10:58,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:10:58,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:58,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:58,435 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 08:10:58,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:10:58,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336139430] [2025-02-08 08:10:58,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336139430] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:58,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:58,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:10:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247660186] [2025-02-08 08:10:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:58,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:10:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:10:58,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:10:58,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:10:58,472 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-02-08 08:10:58,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:10:58,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:58,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-02-08 08:10:58,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:59,041 INFO L124 PetriNetUnfolderBase]: 4535/6221 cut-off events. [2025-02-08 08:10:59,042 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2025-02-08 08:10:59,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13008 conditions, 6221 events. 4535/6221 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32456 event pairs, 3591 based on Foata normal form. 2/4549 useless extension candidates. Maximal degree in co-relation 12980. Up to 6076 conditions per place. [2025-02-08 08:10:59,098 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 44 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2025-02-08 08:10:59,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 249 flow [2025-02-08 08:10:59,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:10:59,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:10:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-02-08 08:10:59,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3992673992673993 [2025-02-08 08:10:59,110 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 171 flow. Second operand 3 states and 109 transitions. [2025-02-08 08:10:59,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 249 flow [2025-02-08 08:10:59,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-02-08 08:10:59,127 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 123 flow [2025-02-08 08:10:59,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-02-08 08:10:59,132 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -16 predicate places. [2025-02-08 08:10:59,133 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 123 flow [2025-02-08 08:10:59,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:10:59,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:59,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:10:59,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:10:59,134 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-02-08 08:10:59,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1944708131, now seen corresponding path program 1 times [2025-02-08 08:10:59,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:10:59,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472453547] [2025-02-08 08:10:59,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:59,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:10:59,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:10:59,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:10:59,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:59,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:10:59,318 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 08:10:59,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:10:59,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472453547] [2025-02-08 08:10:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472453547] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:10:59,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:10:59,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:10:59,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798694193] [2025-02-08 08:10:59,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:10:59,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:10:59,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:10:59,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:10:59,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:10:59,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-02-08 08:10:59,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:10:59,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:10:59,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-02-08 08:10:59,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:10:59,538 INFO L124 PetriNetUnfolderBase]: 1484/2125 cut-off events. [2025-02-08 08:10:59,539 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 08:10:59,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 2125 events. 1484/2125 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9285 event pairs, 1115 based on Foata normal form. 0/1983 useless extension candidates. Maximal degree in co-relation 2395. Up to 2055 conditions per place. [2025-02-08 08:10:59,550 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 40 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-02-08 08:10:59,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 199 flow [2025-02-08 08:10:59,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:10:59,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:10:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-02-08 08:10:59,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3772893772893773 [2025-02-08 08:10:59,553 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 123 flow. Second operand 3 states and 103 transitions. [2025-02-08 08:10:59,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 199 flow [2025-02-08 08:10:59,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:10:59,555 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 114 flow [2025-02-08 08:10:59,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2025-02-08 08:10:59,556 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -20 predicate places. [2025-02-08 08:10:59,556 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 114 flow [2025-02-08 08:10:59,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:10:59,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:10:59,557 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] [2025-02-08 08:10:59,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:10:59,557 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-02-08 08:10:59,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:10:59,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1801830453, now seen corresponding path program 1 times [2025-02-08 08:10:59,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:10:59,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000817393] [2025-02-08 08:10:59,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:10:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:10:59,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 08:10:59,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 08:10:59,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:59,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:10:59,613 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:10:59,622 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 08:10:59,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 08:10:59,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:10:59,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:10:59,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:10:59,679 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:10:59,680 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (26 of 27 remaining) [2025-02-08 08:10:59,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2025-02-08 08:10:59,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (14 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2025-02-08 08:10:59,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2025-02-08 08:10:59,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2025-02-08 08:10:59,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2025-02-08 08:10:59,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2025-02-08 08:10:59,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2025-02-08 08:10:59,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:10:59,685 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-08 08:10:59,748 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:10:59,750 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:10:59,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:10:59 BasicIcfg [2025-02-08 08:10:59,755 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:10:59,756 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:10:59,756 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:10:59,756 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:10:59,757 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:10:58" (3/4) ... [2025-02-08 08:10:59,758 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:10:59,759 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:10:59,760 INFO L158 Benchmark]: Toolchain (without parser) took 2531.82ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 110.7MB in the beginning and 108.4MB in the end (delta: 2.4MB). Peak memory consumption was 150.0MB. Max. memory is 16.1GB. [2025-02-08 08:10:59,761 INFO L158 Benchmark]: CDTParser took 0.78ms. Allocated memory is still 201.3MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:59,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.79ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 78.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 08:10:59,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.26ms. Allocated memory is still 142.6MB. Free memory was 78.7MB in the beginning and 76.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:59,761 INFO L158 Benchmark]: Boogie Preprocessor took 24.21ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 74.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:10:59,762 INFO L158 Benchmark]: IcfgBuilder took 378.41ms. Allocated memory is still 142.6MB. Free memory was 74.7MB in the beginning and 53.1MB in the end (delta: 21.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:10:59,762 INFO L158 Benchmark]: TraceAbstraction took 1653.88ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 52.2MB in the beginning and 108.4MB in the end (delta: -56.2MB). Peak memory consumption was 82.9MB. Max. memory is 16.1GB. [2025-02-08 08:10:59,762 INFO L158 Benchmark]: Witness Printer took 3.37ms. Allocated memory is still 285.2MB. Free memory was 108.4MB in the beginning and 108.4MB in the end (delta: 10.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:10:59,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78ms. Allocated memory is still 201.3MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.79ms. Allocated memory is still 142.6MB. Free memory was 110.7MB in the beginning and 78.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.26ms. Allocated memory is still 142.6MB. Free memory was 78.7MB in the beginning and 76.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.21ms. Allocated memory is still 142.6MB. Free memory was 76.7MB in the beginning and 74.7MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 378.41ms. Allocated memory is still 142.6MB. Free memory was 74.7MB in the beginning and 53.1MB in the end (delta: 21.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1653.88ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 52.2MB in the beginning and 108.4MB in the end (delta: -56.2MB). Peak memory consumption was 82.9MB. Max. memory is 16.1GB. * Witness Printer took 3.37ms. Allocated memory is still 285.2MB. Free memory was 108.4MB in the beginning and 108.4MB in the end (delta: 10.9kB). Peak memory consumption was 8.4MB. 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={-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=-4, t2=-3, 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=-4, t2=-3, 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=-4, t2=-3, t3=-2, 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=-4, t2=-3, t3=-2, 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=-4, t2=-3, t3=-2, 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=-4, t2=-3, t3=-2, 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=-4, t2=-3, t3=-2, t4=-1, t5=0, 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=-4, t2=-3, t3=-2, t4=-1, t5=0, 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=-4, t2=-3, t3=-2, t4=-1, t5=0, 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=-4, t2=-3, t3=-2, t4=-1, t5=0, 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=-4, t2=-3, t3=-2, t4=-1, t5=0, 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=-4, t2=-3, t3=-2, t4=-1, t5=0, 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=-4, t2=-3, t3=-2, t4=-1, t5=0, t=-5, v={-2:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [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={-2:0}] [L1164] RET 0 __VERIFIER_assert(v[0] == 'X') [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={-2:0}] - 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: 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: 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: 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, 105 locations, 27 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: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 3 mSDtfsCounter, 105 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=171occurred 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, 61 NumberOfCodeBlocks, 61 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 08:10:59,782 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.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 ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:11:01,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:11:01,833 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:11:01,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:11:01,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:11:01,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:11:01,855 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:11:01,855 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:11:01,855 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:11:01,855 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:11:01,855 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:11:01,856 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:11:01,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:11:01,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:11:01,856 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:11:01,856 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:11:01,856 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:11:01,856 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:11:01,856 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:11:01,857 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:11:01,858 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:01,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:11:01,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:11:01,859 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:11:01,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:11:01,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:11:01,859 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 -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2025-02-08 08:11:02,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:11:02,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:11:02,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:11:02,060 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:11:02,060 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:11:02,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/singleton.i [2025-02-08 08:11:03,253 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3287cb9b/14c536fe07c0473eb0ddb4d92f302a47/FLAGef64210f3 [2025-02-08 08:11:03,472 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:11:03,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread/singleton.i [2025-02-08 08:11:03,484 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3287cb9b/14c536fe07c0473eb0ddb4d92f302a47/FLAGef64210f3 [2025-02-08 08:11:03,824 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a3287cb9b/14c536fe07c0473eb0ddb4d92f302a47 [2025-02-08 08:11:03,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:11:03,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:11:03,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:03,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:11:03,831 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:11:03,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:03" (1/1) ... [2025-02-08 08:11:03,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da0ef77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:03, skipping insertion in model container [2025-02-08 08:11:03,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:11:03" (1/1) ... [2025-02-08 08:11:03,852 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:11:04,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:04,121 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:11:04,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:11:04,266 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:11:04,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:11:04 WrapperNode [2025-02-08 08:11:04,267 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:11:04,267 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:04,267 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:11:04,267 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:11:04,272 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 08:11:04,285 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 08:11:04,298 INFO L138 Inliner]: procedures = 324, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2025-02-08 08:11:04,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:11:04,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:11:04,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:11:04,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:11:04,307 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 08:11:04,308 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 08:11:04,313 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 08:11:04,324 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 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 08:11:04,324 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 08:11:04,324 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 08:11:04,344 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 08:11:04,345 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 08:11:04,346 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 08:11:04,347 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 08:11:04,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:11:04,349 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:11:04,349 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:11:04,349 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:11:04,350 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 08:11:04,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:11:04,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:04,380 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 08:11:04,385 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 08:11:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2025-02-08 08:11:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2025-02-08 08:11:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 08:11:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-02-08 08:11:04,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-08 08:11:04,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-08 08:11:04,400 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-08 08:11:04,400 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-08 08:11:04,401 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-08 08:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 08:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:11:04,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:11:04,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:11:04,402 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 08:11:04,508 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:11:04,510 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:11:04,721 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:11:04,721 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:11:04,785 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:11:04,785 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:11:04,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:04 BoogieIcfgContainer [2025-02-08 08:11:04,786 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:11:04,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:11:04,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:11:04,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:11:04,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:11:03" (1/3) ... [2025-02-08 08:11:04,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26edfc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:04, skipping insertion in model container [2025-02-08 08:11:04,791 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 08:11:04,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26edfc21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:11:04, skipping insertion in model container [2025-02-08 08:11:04,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:04" (3/3) ... [2025-02-08 08:11:04,792 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton.i [2025-02-08 08:11:04,801 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:11:04,802 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 8 error locations. [2025-02-08 08:11:04,802 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:11:04,886 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-02-08 08:11:04,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 89 transitions, 275 flow [2025-02-08 08:11:04,927 INFO L124 PetriNetUnfolderBase]: 7/61 cut-off events. [2025-02-08 08:11:04,928 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-08 08:11:04,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 61 events. 7/61 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 70. Up to 3 conditions per place. [2025-02-08 08:11:04,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 89 transitions, 275 flow [2025-02-08 08:11:04,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 60 transitions, 171 flow [2025-02-08 08:11:04,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:11:04,944 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;@6608c80c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:11:04,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2025-02-08 08:11:04,949 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:11:04,949 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-02-08 08:11:04,949 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:11:04,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:04,949 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:04,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-02-08 08:11:04,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash 68215454, now seen corresponding path program 1 times [2025-02-08 08:11:04,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:04,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865726893] [2025-02-08 08:11:04,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:04,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:04,962 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 08:11:04,964 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 08:11:05,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:11:05,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:11:05,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:05,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:05,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-08 08:11:05,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:05,082 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 08:11:05,100 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 08:11:05,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:05,101 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865726893] [2025-02-08 08:11:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865726893] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:05,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:05,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:11:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017940923] [2025-02-08 08:11:05,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:05,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:05,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:05,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:05,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:05,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-02-08 08:11:05,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:11:05,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:05,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-02-08 08:11:05,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:05,828 INFO L124 PetriNetUnfolderBase]: 4535/6221 cut-off events. [2025-02-08 08:11:05,829 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2025-02-08 08:11:05,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13008 conditions, 6221 events. 4535/6221 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 32421 event pairs, 3591 based on Foata normal form. 2/4547 useless extension candidates. Maximal degree in co-relation 12980. Up to 6076 conditions per place. [2025-02-08 08:11:05,865 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 44 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2025-02-08 08:11:05,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 249 flow [2025-02-08 08:11:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-02-08 08:11:05,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3992673992673993 [2025-02-08 08:11:05,875 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 171 flow. Second operand 3 states and 109 transitions. [2025-02-08 08:11:05,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 249 flow [2025-02-08 08:11:05,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 215 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-02-08 08:11:05,909 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 123 flow [2025-02-08 08:11:05,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2025-02-08 08:11:05,914 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -16 predicate places. [2025-02-08 08:11:05,915 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 123 flow [2025-02-08 08:11:05,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:11:05,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:05,915 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:11:05,924 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 08:11:06,120 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 08:11:06,120 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-02-08 08:11:06,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:06,121 INFO L85 PathProgramCache]: Analyzing trace with hash 68215455, now seen corresponding path program 1 times [2025-02-08 08:11:06,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:06,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830040312] [2025-02-08 08:11:06,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:06,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:06,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:06,128 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 08:11:06,129 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 08:11:06,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 08:11:06,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 08:11:06,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:06,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:11:06,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:11:06,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:11:06,200 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 08:11:06,224 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 08:11:06,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:11:06,224 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:11:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830040312] [2025-02-08 08:11:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830040312] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:11:06,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:11:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 08:11:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703725655] [2025-02-08 08:11:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:11:06,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:11:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:11:06,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:11:06,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:11:06,229 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 91 [2025-02-08 08:11:06,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:11:06,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:11:06,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 91 [2025-02-08 08:11:06,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:11:06,433 INFO L124 PetriNetUnfolderBase]: 1484/2125 cut-off events. [2025-02-08 08:11:06,433 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 08:11:06,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 2125 events. 1484/2125 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9305 event pairs, 1115 based on Foata normal form. 0/1981 useless extension candidates. Maximal degree in co-relation 2395. Up to 2055 conditions per place. [2025-02-08 08:11:06,441 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 40 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-02-08 08:11:06,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 199 flow [2025-02-08 08:11:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:11:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:11:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2025-02-08 08:11:06,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3772893772893773 [2025-02-08 08:11:06,442 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 123 flow. Second operand 3 states and 103 transitions. [2025-02-08 08:11:06,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 199 flow [2025-02-08 08:11:06,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:11:06,443 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 114 flow [2025-02-08 08:11:06,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2025-02-08 08:11:06,444 INFO L279 CegarLoopForPetriNet]: 72 programPoint places, -20 predicate places. [2025-02-08 08:11:06,444 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 114 flow [2025-02-08 08:11:06,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 08:11:06,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:11:06,445 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] [2025-02-08 08:11:06,452 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 08:11:06,645 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 08:11:06,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2025-02-08 08:11:06,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:11:06,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1777568065, now seen corresponding path program 1 times [2025-02-08 08:11:06,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:11:06,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905143911] [2025-02-08 08:11:06,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:11:06,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:11:06,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:11:06,648 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 08:11:06,649 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 08:11:06,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 08:11:06,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 08:11:06,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:06,777 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:06,777 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:11:06,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-08 08:11:06,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 08:11:06,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:11:06,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:11:06,855 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 08:11:06,855 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:11:06,856 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (26 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2025-02-08 08:11:06,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (14 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2025-02-08 08:11:06,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 27 remaining) [2025-02-08 08:11:06,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:11:07,059 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 08:11:07,059 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-02-08 08:11:07,120 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:11:07,121 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:11:07,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:11:07 BasicIcfg [2025-02-08 08:11:07,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:11:07,132 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:11:07,132 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:11:07,132 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:11:07,133 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:11:04" (3/4) ... [2025-02-08 08:11:07,134 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:11:07,135 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:11:07,135 INFO L158 Benchmark]: Toolchain (without parser) took 3308.08ms. Allocated memory was 83.9MB in the beginning and 167.8MB in the end (delta: 83.9MB). Free memory was 57.7MB in the beginning and 53.0MB in the end (delta: 4.7MB). Peak memory consumption was 88.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,140 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:07,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.65ms. Allocated memory is still 83.9MB. Free memory was 57.7MB in the beginning and 24.8MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.61ms. Allocated memory is still 83.9MB. Free memory was 24.5MB in the beginning and 22.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:07,140 INFO L158 Benchmark]: Boogie Preprocessor took 50.19ms. Allocated memory is still 83.9MB. Free memory was 22.6MB in the beginning and 57.9MB in the end (delta: -35.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,140 INFO L158 Benchmark]: IcfgBuilder took 436.77ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 30.2MB in the end (delta: 27.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,140 INFO L158 Benchmark]: TraceAbstraction took 2344.31ms. Allocated memory was 83.9MB in the beginning and 167.8MB in the end (delta: 83.9MB). Free memory was 29.7MB in the beginning and 53.0MB in the end (delta: -23.3MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2025-02-08 08:11:07,140 INFO L158 Benchmark]: Witness Printer took 2.70ms. Allocated memory is still 167.8MB. Free memory was 53.0MB in the beginning and 53.0MB in the end (delta: 6.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:11:07,142 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 83.9MB. Free memory was 61.6MB in the beginning and 61.6MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.65ms. Allocated memory is still 83.9MB. Free memory was 57.7MB in the beginning and 24.8MB in the end (delta: 32.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.61ms. Allocated memory is still 83.9MB. Free memory was 24.5MB in the beginning and 22.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.19ms. Allocated memory is still 83.9MB. Free memory was 22.6MB in the beginning and 57.9MB in the end (delta: -35.3MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * IcfgBuilder took 436.77ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 30.2MB in the end (delta: 27.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2344.31ms. Allocated memory was 83.9MB in the beginning and 167.8MB in the end (delta: 83.9MB). Free memory was 29.7MB in the beginning and 53.0MB in the end (delta: -23.3MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Witness Printer took 2.70ms. Allocated memory is still 167.8MB. Free memory was 53.0MB in the beginning and 53.0MB in the end (delta: 6.4kB). 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] CALL 0 __VERIFIER_assert(v[0] == 'X') [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') [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: 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: 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: 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: -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, 105 locations, 27 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: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 3 mSDtfsCounter, 105 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=171occurred 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, 0.1s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 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 08:11:07,161 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