./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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-theta/unwind3-nondet.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 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:16:50,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:16:50,083 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 01:16:50,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:16:50,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:16:50,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:16:50,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:16:50,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:16:50,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:16:50,115 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:16:50,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:16:50,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:16:50,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:16:50,116 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:16:50,116 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:16:50,116 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:16:50,116 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:16:50,117 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:16:50,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:50,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:50,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:50,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:16:50,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:16:50,119 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 01:16:50,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 01:16:50,119 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:16:50,119 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:16:50,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:16:50,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:16:50,119 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 -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2025-01-10 01:16:50,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:16:50,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:16:50,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:16:50,354 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:16:50,355 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:16:50,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-01-10 01:16:51,567 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf01e9870/734e86d0388b4dd29a21f8287deafaf7/FLAGcdd2d3b15 [2025-01-10 01:16:51,880 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:16:51,880 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-01-10 01:16:51,898 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf01e9870/734e86d0388b4dd29a21f8287deafaf7/FLAGcdd2d3b15 [2025-01-10 01:16:51,916 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bf01e9870/734e86d0388b4dd29a21f8287deafaf7 [2025-01-10 01:16:51,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:16:51,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:16:51,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:51,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:16:51,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:16:51,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,927 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bc0bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:51, skipping insertion in model container [2025-01-10 01:16:51,927 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:51" (1/1) ... [2025-01-10 01:16:51,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:16:52,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:52,211 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:16:52,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:52,286 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:16:52,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52 WrapperNode [2025-01-10 01:16:52,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:52,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:52,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:16:52,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:16:52,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,322 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2025-01-10 01:16:52,324 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:52,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:16:52,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:16:52,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:16:52,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,350 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 01:16:52,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,357 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:16:52,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:16:52,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:16:52,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:16:52,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (1/1) ... [2025-01-10 01:16:52,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:52,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:52,398 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) [2025-01-10 01:16:52,401 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 [2025-01-10 01:16:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:16:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-01-10 01:16:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-01-10 01:16:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-01-10 01:16:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-01-10 01:16:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 01:16:52,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:16:52,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:16:52,434 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:16:52,575 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:16:52,576 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:16:52,669 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:16:52,669 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:16:52,730 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:16:52,730 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:16:52,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:52 BoogieIcfgContainer [2025-01-10 01:16:52,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:16:52,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:16:52,732 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:16:52,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:16:52,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:51" (1/3) ... [2025-01-10 01:16:52,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578c6705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:52, skipping insertion in model container [2025-01-10 01:16:52,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:52" (2/3) ... [2025-01-10 01:16:52,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578c6705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:52, skipping insertion in model container [2025-01-10 01:16:52,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:52" (3/3) ... [2025-01-10 01:16:52,738 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-01-10 01:16:52,749 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:16:52,751 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-10 01:16:52,751 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:16:52,782 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 01:16:52,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2025-01-10 01:16:52,827 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-01-10 01:16:52,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:52,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2025-01-10 01:16:52,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2025-01-10 01:16:52,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2025-01-10 01:16:52,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:52,855 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;@780967dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:52,856 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 01:16:52,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:52,861 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-01-10 01:16:52,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:52,861 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:52,862 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:52,862 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:52,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -823102642, now seen corresponding path program 1 times [2025-01-10 01:16:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:52,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978331757] [2025-01-10 01:16:52,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:52,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:52,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 01:16:52,957 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 01:16:52,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:52,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:53,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:53,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978331757] [2025-01-10 01:16:53,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978331757] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:53,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:53,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:53,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035025444] [2025-01-10 01:16:53,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:53,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:53,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:53,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:53,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:53,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-01-10 01:16:53,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-01-10 01:16:53,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:53,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-01-10 01:16:53,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:53,151 INFO L124 PetriNetUnfolderBase]: 80/198 cut-off events. [2025-01-10 01:16:53,152 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:53,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 198 events. 80/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 813 event pairs, 68 based on Foata normal form. 24/198 useless extension candidates. Maximal degree in co-relation 288. Up to 155 conditions per place. [2025-01-10 01:16:53,156 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 1 changer transitions 1/22 dead transitions. [2025-01-10 01:16:53,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 81 flow [2025-01-10 01:16:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:16:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:16:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-01-10 01:16:53,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-01-10 01:16:53,168 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 42 transitions. [2025-01-10 01:16:53,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 81 flow [2025-01-10 01:16:53,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:16:53,175 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 50 flow [2025-01-10 01:16:53,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2025-01-10 01:16:53,181 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2025-01-10 01:16:53,182 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 50 flow [2025-01-10 01:16:53,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-01-10 01:16:53,182 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:53,182 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:53,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 01:16:53,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:53,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:53,184 INFO L85 PathProgramCache]: Analyzing trace with hash 254594957, now seen corresponding path program 1 times [2025-01-10 01:16:53,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:53,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214365141] [2025-01-10 01:16:53,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:53,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:53,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 01:16:53,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 01:16:53,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:53,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:53,199 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:53,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 01:16:53,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 01:16:53,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:53,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:53,225 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 01:16:53,225 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:53,227 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-01-10 01:16:53,228 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-01-10 01:16:53,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-01-10 01:16:53,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-01-10 01:16:53,229 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-01-10 01:16:53,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 01:16:53,230 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 01:16:53,232 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 01:16:53,232 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 01:16:53,259 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 01:16:53,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2025-01-10 01:16:53,279 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2025-01-10 01:16:53,282 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:53,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 188 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2025-01-10 01:16:53,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2025-01-10 01:16:53,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2025-01-10 01:16:53,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:53,285 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;@780967dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:53,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-10 01:16:53,292 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:53,292 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-01-10 01:16:53,293 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:53,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:53,293 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:53,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 01:16:53,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -43047961, now seen corresponding path program 1 times [2025-01-10 01:16:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:53,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770901924] [2025-01-10 01:16:53,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:53,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 01:16:53,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 01:16:53,321 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:53,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:53,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 01:16:53,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770901924] [2025-01-10 01:16:53,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770901924] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:53,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:53,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211652927] [2025-01-10 01:16:53,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:53,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:53,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 01:16:53,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:53,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:53,354 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 01:16:53,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-01-10 01:16:53,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:53,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 01:16:53,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:53,461 INFO L124 PetriNetUnfolderBase]: 401/777 cut-off events. [2025-01-10 01:16:53,461 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-01-10 01:16:53,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 777 events. 401/777 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4037 event pairs, 362 based on Foata normal form. 69/792 useless extension candidates. Maximal degree in co-relation 399. Up to 647 conditions per place. [2025-01-10 01:16:53,465 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 16 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2025-01-10 01:16:53,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 101 flow [2025-01-10 01:16:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:16:53,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:16:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2025-01-10 01:16:53,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2025-01-10 01:16:53,467 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 3 states and 57 transitions. [2025-01-10 01:16:53,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 101 flow [2025-01-10 01:16:53,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:16:53,468 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 64 flow [2025-01-10 01:16:53,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2025-01-10 01:16:53,469 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-01-10 01:16:53,469 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 64 flow [2025-01-10 01:16:53,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-01-10 01:16:53,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:53,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:53,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 01:16:53,469 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 01:16:53,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:53,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1760780771, now seen corresponding path program 1 times [2025-01-10 01:16:53,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 01:16:53,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528135340] [2025-01-10 01:16:53,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:53,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 01:16:53,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:53,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:53,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:53,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:53,488 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:53,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:53,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:53,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:53,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:53,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 01:16:53,510 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:53,511 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-01-10 01:16:53,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-01-10 01:16:53,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-01-10 01:16:53,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-01-10 01:16:53,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-01-10 01:16:53,511 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-01-10 01:16:53,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 01:16:53,511 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 01:16:53,526 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2025-01-10 01:16:53,526 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 01:16:53,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:16:53 BasicIcfg [2025-01-10 01:16:53,530 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 01:16:53,531 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 01:16:53,531 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 01:16:53,531 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 01:16:53,532 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:52" (3/4) ... [2025-01-10 01:16:53,533 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 01:16:53,533 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 01:16:53,534 INFO L158 Benchmark]: Toolchain (without parser) took 1614.42ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 55.6MB in the end (delta: 49.3MB). Peak memory consumption was 48.7MB. Max. memory is 16.1GB. [2025-01-10 01:16:53,534 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:53,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.14ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 85.2MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 01:16:53,535 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.79ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 01:16:53,535 INFO L158 Benchmark]: Boogie Preprocessor took 41.73ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 81.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:53,535 INFO L158 Benchmark]: RCFGBuilder took 364.11ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 61.0MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 01:16:53,535 INFO L158 Benchmark]: TraceAbstraction took 798.18ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 56.4MB in the end (delta: 4.6MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2025-01-10 01:16:53,535 INFO L158 Benchmark]: Witness Printer took 2.55ms. Allocated memory is still 142.6MB. Free memory was 56.4MB in the beginning and 55.6MB in the end (delta: 793.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:16:53,536 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 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.14ms. Allocated memory is still 142.6MB. Free memory was 104.9MB in the beginning and 85.2MB in the end (delta: 19.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.79ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 83.5MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.73ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 81.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 364.11ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 61.0MB in the end (delta: 20.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 798.18ms. Allocated memory is still 142.6MB. Free memory was 61.0MB in the beginning and 56.4MB in the end (delta: 4.6MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Witness Printer took 2.55ms. Allocated memory is still 142.6MB. Free memory was 56.4MB in the beginning and 55.6MB in the end (delta: 793.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L770] 0 _N = __VERIFIER_nondet_int() [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=0, limit=0] [L773] 0 int i = 0; VAL [_N=0, i=0, limit=0] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [_N=0, limit=0, t=-1] [L763] 1 int i, bound; [L764] 1 bound = limit [L765] 1 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, limit=0] [L765] COND FALSE 1 !(i < bound) [L766] CALL 1 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 1 !expression [L753] CALL 1 reach_error() [L752] COND FALSE 1 !(0) VAL [_N=0, limit=0] [L752] 1 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: 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: 775]: 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 5 procedures, 39 locations, 5 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 52 locations, 6 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: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2025-01-10 01:16:53,556 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-theta/unwind3-nondet.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 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 01:16:55,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 01:16:55,740 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-10 01:16:55,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 01:16:55,748 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 01:16:55,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 01:16:55,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 01:16:55,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 01:16:55,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 01:16:55,775 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 01:16:55,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 01:16:55,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 01:16:55,776 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 01:16:55,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 01:16:55,776 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 01:16:55,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 01:16:55,777 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-10 01:16:55,778 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-10 01:16:55,778 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 01:16:55,778 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 01:16:55,778 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 01:16:55,778 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 01:16:55,778 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:55,779 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:55,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 01:16:55,779 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-10 01:16:55,780 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-10 01:16:55,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 01:16:55,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 01:16:55,780 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 01:16:55,780 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 01:16:55,780 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 -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2025-01-10 01:16:55,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 01:16:56,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 01:16:56,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 01:16:56,016 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 01:16:56,017 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 01:16:56,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-01-10 01:16:57,261 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9dcc68f1d/0bbc48d01bc046099f73183d84566278/FLAGc6703e6a1 [2025-01-10 01:16:57,491 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 01:16:57,492 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-01-10 01:16:57,505 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9dcc68f1d/0bbc48d01bc046099f73183d84566278/FLAGc6703e6a1 [2025-01-10 01:16:57,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9dcc68f1d/0bbc48d01bc046099f73183d84566278 [2025-01-10 01:16:57,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 01:16:57,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 01:16:57,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:57,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 01:16:57,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 01:16:57,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78456caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57, skipping insertion in model container [2025-01-10 01:16:57,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 01:16:57,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:57,812 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 01:16:57,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 01:16:57,890 INFO L204 MainTranslator]: Completed translation [2025-01-10 01:16:57,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57 WrapperNode [2025-01-10 01:16:57,893 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 01:16:57,894 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:57,894 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 01:16:57,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 01:16:57,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,928 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2025-01-10 01:16:57,928 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 01:16:57,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 01:16:57,929 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 01:16:57,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 01:16:57,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,947 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-10 01:16:57,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,952 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,952 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,954 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,960 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,962 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 01:16:57,963 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 01:16:57,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 01:16:57,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 01:16:57,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (1/1) ... [2025-01-10 01:16:57,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 01:16:57,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:57,995 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) [2025-01-10 01:16:58,000 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 [2025-01-10 01:16:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 01:16:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-01-10 01:16:58,013 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-01-10 01:16:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-01-10 01:16:58,013 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-01-10 01:16:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-10 01:16:58,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 01:16:58,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 01:16:58,014 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 01:16:58,106 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 01:16:58,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 01:16:58,234 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 01:16:58,234 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 01:16:58,331 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 01:16:58,332 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 01:16:58,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:58 BoogieIcfgContainer [2025-01-10 01:16:58,332 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 01:16:58,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 01:16:58,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 01:16:58,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 01:16:58,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:16:57" (1/3) ... [2025-01-10 01:16:58,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7842619e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:58, skipping insertion in model container [2025-01-10 01:16:58,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:16:57" (2/3) ... [2025-01-10 01:16:58,341 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7842619e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:16:58, skipping insertion in model container [2025-01-10 01:16:58,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:58" (3/3) ... [2025-01-10 01:16:58,342 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-01-10 01:16:58,352 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 01:16:58,353 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-10 01:16:58,353 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 01:16:58,388 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 01:16:58,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2025-01-10 01:16:58,470 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-01-10 01:16:58,471 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:58,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 43 events. 6/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 102 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 23. Up to 4 conditions per place. [2025-01-10 01:16:58,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2025-01-10 01:16:58,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2025-01-10 01:16:58,486 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:58,498 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;@1a5c462, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:58,499 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-01-10 01:16:58,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:58,509 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-01-10 01:16:58,509 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:58,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:58,510 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:58,510 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:58,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:58,516 INFO L85 PathProgramCache]: Analyzing trace with hash -823102642, now seen corresponding path program 1 times [2025-01-10 01:16:58,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:58,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221938960] [2025-01-10 01:16:58,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:58,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:58,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:58,527 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) [2025-01-10 01:16:58,528 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 [2025-01-10 01:16:58,587 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 01:16:58,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 01:16:58,593 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:58,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:58,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 01:16:58,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:58,625 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:58,626 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:58,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221938960] [2025-01-10 01:16:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221938960] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:58,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:58,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:58,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376919471] [2025-01-10 01:16:58,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:58,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:58,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:58,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:58,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:58,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2025-01-10 01:16:58,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-01-10 01:16:58,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:58,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2025-01-10 01:16:58,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:58,724 INFO L124 PetriNetUnfolderBase]: 80/198 cut-off events. [2025-01-10 01:16:58,724 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:58,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 198 events. 80/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 813 event pairs, 68 based on Foata normal form. 24/198 useless extension candidates. Maximal degree in co-relation 288. Up to 155 conditions per place. [2025-01-10 01:16:58,729 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 1 changer transitions 1/22 dead transitions. [2025-01-10 01:16:58,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 81 flow [2025-01-10 01:16:58,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:16:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:16:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2025-01-10 01:16:58,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2025-01-10 01:16:58,739 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 42 transitions. [2025-01-10 01:16:58,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 81 flow [2025-01-10 01:16:58,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:16:58,743 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 50 flow [2025-01-10 01:16:58,745 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2025-01-10 01:16:58,747 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2025-01-10 01:16:58,747 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 50 flow [2025-01-10 01:16:58,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2025-01-10 01:16:58,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:58,751 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:58,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-10 01:16:58,951 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 [2025-01-10 01:16:58,952 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-01-10 01:16:58,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:58,953 INFO L85 PathProgramCache]: Analyzing trace with hash 254594957, now seen corresponding path program 1 times [2025-01-10 01:16:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737425062] [2025-01-10 01:16:58,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:58,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:58,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:58,955 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) [2025-01-10 01:16:58,960 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 [2025-01-10 01:16:58,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 01:16:59,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 01:16:59,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:59,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:59,006 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:59,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 01:16:59,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 01:16:59,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:59,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:59,031 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 01:16:59,031 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:59,032 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-01-10 01:16:59,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-01-10 01:16:59,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-01-10 01:16:59,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-01-10 01:16:59,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-01-10 01:16:59,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-10 01:16:59,237 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 [2025-01-10 01:16:59,238 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 01:16:59,240 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 01:16:59,240 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 01:16:59,267 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 01:16:59,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2025-01-10 01:16:59,281 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2025-01-10 01:16:59,284 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 01:16:59,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 188 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2025-01-10 01:16:59,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2025-01-10 01:16:59,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2025-01-10 01:16:59,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 01:16:59,287 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;@1a5c462, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 01:16:59,287 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-01-10 01:16:59,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 01:16:59,289 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2025-01-10 01:16:59,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 01:16:59,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:59,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:59,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 01:16:59,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:59,290 INFO L85 PathProgramCache]: Analyzing trace with hash -43047961, now seen corresponding path program 1 times [2025-01-10 01:16:59,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:59,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019640055] [2025-01-10 01:16:59,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:59,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:59,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:59,293 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) [2025-01-10 01:16:59,294 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 [2025-01-10 01:16:59,337 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 01:16:59,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 01:16:59,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:59,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 01:16:59,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-10 01:16:59,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 01:16:59,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 01:16:59,353 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-10 01:16:59,353 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-10 01:16:59,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019640055] [2025-01-10 01:16:59,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019640055] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 01:16:59,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 01:16:59,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-10 01:16:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349496707] [2025-01-10 01:16:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 01:16:59,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 01:16:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-10 01:16:59,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 01:16:59,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 01:16:59,355 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 43 [2025-01-10 01:16:59,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-01-10 01:16:59,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 01:16:59,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 43 [2025-01-10 01:16:59,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 01:16:59,474 INFO L124 PetriNetUnfolderBase]: 401/777 cut-off events. [2025-01-10 01:16:59,477 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-01-10 01:16:59,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 777 events. 401/777 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4037 event pairs, 362 based on Foata normal form. 69/792 useless extension candidates. Maximal degree in co-relation 399. Up to 647 conditions per place. [2025-01-10 01:16:59,485 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 16 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2025-01-10 01:16:59,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 101 flow [2025-01-10 01:16:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 01:16:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 01:16:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2025-01-10 01:16:59,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2025-01-10 01:16:59,487 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 3 states and 57 transitions. [2025-01-10 01:16:59,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 101 flow [2025-01-10 01:16:59,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 100 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 01:16:59,488 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 64 flow [2025-01-10 01:16:59,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2025-01-10 01:16:59,489 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-01-10 01:16:59,489 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 64 flow [2025-01-10 01:16:59,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2025-01-10 01:16:59,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 01:16:59,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 01:16:59,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-10 01:16:59,690 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 [2025-01-10 01:16:59,690 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-01-10 01:16:59,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 01:16:59,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1760780771, now seen corresponding path program 1 times [2025-01-10 01:16:59,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-10 01:16:59,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28374676] [2025-01-10 01:16:59,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 01:16:59,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:59,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 01:16:59,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 01:16:59,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-10 01:16:59,761 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:59,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:59,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:59,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:59,767 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 01:16:59,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 01:16:59,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 01:16:59,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 01:16:59,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 01:16:59,792 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-10 01:16:59,793 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 01:16:59,793 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-01-10 01:16:59,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-01-10 01:16:59,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-01-10 01:16:59,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-01-10 01:16:59,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-01-10 01:16:59,793 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-01-10 01:16:59,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-10 01:16:59,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 01:16:59,994 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 01:17:00,015 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2025-01-10 01:17:00,015 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-10 01:17:00,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:17:00 BasicIcfg [2025-01-10 01:17:00,024 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-10 01:17:00,024 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 01:17:00,024 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 01:17:00,024 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 01:17:00,025 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:16:58" (3/4) ... [2025-01-10 01:17:00,026 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 01:17:00,027 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 01:17:00,027 INFO L158 Benchmark]: Toolchain (without parser) took 2506.21ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 65.7MB in the end (delta: 25.4MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2025-01-10 01:17:00,028 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:17:00,028 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.44ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 70.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 01:17:00,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.86ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:17:00,029 INFO L158 Benchmark]: Boogie Preprocessor took 33.74ms. Allocated memory is still 117.4MB. Free memory was 68.7MB in the beginning and 66.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:17:00,029 INFO L158 Benchmark]: RCFGBuilder took 369.54ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 43.7MB in the end (delta: 23.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-10 01:17:00,029 INFO L158 Benchmark]: TraceAbstraction took 1689.12ms. Allocated memory is still 117.4MB. Free memory was 43.0MB in the beginning and 65.7MB in the end (delta: -22.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:17:00,030 INFO L158 Benchmark]: Witness Printer took 2.39ms. Allocated memory is still 117.4MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 01:17:00,032 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 61.8MB in the beginning and 61.8MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.44ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 70.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.86ms. Allocated memory is still 117.4MB. Free memory was 70.3MB in the beginning and 68.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.74ms. Allocated memory is still 117.4MB. Free memory was 68.7MB in the beginning and 66.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.54ms. Allocated memory is still 117.4MB. Free memory was 66.9MB in the beginning and 43.7MB in the end (delta: 23.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1689.12ms. Allocated memory is still 117.4MB. Free memory was 43.0MB in the beginning and 65.7MB in the end (delta: -22.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.39ms. Allocated memory is still 117.4MB. Free memory is still 65.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L770] 0 _N = __VERIFIER_nondet_int() [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=0, limit=0] [L773] 0 int i = 0; VAL [_N=0, i=0, limit=0] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [_N=0, limit=0, t=0] [L763] 1 int i, bound; [L764] 1 bound = limit [L765] 1 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, limit=0] [L765] COND FALSE 1 !(i < bound) [L766] CALL 1 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 1 !expression [L753] CALL 1 reach_error() [L752] COND FALSE 1 !(0) VAL [_N=0, limit=0] [L752] 1 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: 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: 775]: 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 5 procedures, 39 locations, 5 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 52 locations, 6 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2025-01-10 01:17:00,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample