./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-1.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 ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:15:48,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:15:48,407 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 13:15:48,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:15:48,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:15:48,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:15:48,450 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:15:48,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:15:48,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:15:48,451 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:15:48,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:15:48,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:15:48,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:15:48,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:15:48,451 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:15:48,451 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:15:48,451 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:15:48,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:15:48,453 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:15:48,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:48,453 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:15:48,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:15:48,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 13:15:48,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 13:15:48,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:15:48,454 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:15:48,454 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:15:48,454 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:15:48,454 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 -> ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe [2025-02-06 13:15:48,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:15:48,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:15:48,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:15:48,733 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:15:48,733 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:15:48,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-1.i [2025-02-06 13:15:49,984 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d520829c9/d439724080c34aff950248e81f87d4b1/FLAG41cf97e14 [2025-02-06 13:15:50,269 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:15:50,269 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-1.i [2025-02-06 13:15:50,280 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d520829c9/d439724080c34aff950248e81f87d4b1/FLAG41cf97e14 [2025-02-06 13:15:50,561 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d520829c9/d439724080c34aff950248e81f87d4b1 [2025-02-06 13:15:50,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:15:50,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:15:50,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:50,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:15:50,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:15:50,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:50,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77b13c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50, skipping insertion in model container [2025-02-06 13:15:50,569 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:50,591 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:15:50,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:50,907 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:15:50,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:50,984 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:15:50,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50 WrapperNode [2025-02-06 13:15:50,985 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:50,986 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:50,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:15:50,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:15:50,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,019 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 60 [2025-02-06 13:15:51,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:51,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:15:51,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:15:51,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:15:51,025 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,029 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,042 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]. [2025-02-06 13:15:51,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,046 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,047 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,048 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:15:51,049 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:15:51,050 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:15:51,050 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:15:51,050 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (1/1) ... [2025-02-06 13:15:51,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:51,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:51,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:15:51,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:15:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:15:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-06 13:15:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-06 13:15:51,100 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-06 13:15:51,100 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-06 13:15:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 13:15:51,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:15:51,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:15:51,102 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:15:51,237 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:15:51,239 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:15:51,339 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:15:51,339 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:15:51,419 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:15:51,420 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:15:51,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:51 BoogieIcfgContainer [2025-02-06 13:15:51,420 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:15:51,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:15:51,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:15:51,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:15:51,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:15:50" (1/3) ... [2025-02-06 13:15:51,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2990304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:51, skipping insertion in model container [2025-02-06 13:15:51,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:50" (2/3) ... [2025-02-06 13:15:51,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2990304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:51, skipping insertion in model container [2025-02-06 13:15:51,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:51" (3/3) ... [2025-02-06 13:15:51,431 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-1.i [2025-02-06 13:15:51,447 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:15:51,449 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-1.i that has 3 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 13:15:51,449 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:15:51,479 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 13:15:51,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2025-02-06 13:15:51,524 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-02-06 13:15:51,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:51,528 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 93 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. [2025-02-06 13:15:51,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2025-02-06 13:15:51,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2025-02-06 13:15:51,535 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:51,543 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;@3d125ed2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:51,543 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 13:15:51,549 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:51,549 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-02-06 13:15:51,549 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:51,549 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:51,550 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:51,550 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)] === [2025-02-06 13:15:51,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1525933431, now seen corresponding path program 1 times [2025-02-06 13:15:51,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:51,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203425804] [2025-02-06 13:15:51,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:51,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:51,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 13:15:51,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 13:15:51,625 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:51,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:51,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:51,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203425804] [2025-02-06 13:15:51,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203425804] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:51,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:51,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 13:15:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311975654] [2025-02-06 13:15:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:51,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 13:15:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:51,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 13:15:51,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 13:15:51,781 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 13:15:51,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:51,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:51,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 13:15:51,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:51,857 INFO L124 PetriNetUnfolderBase]: 98/222 cut-off events. [2025-02-06 13:15:51,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:51,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 222 events. 98/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 833 event pairs, 32 based on Foata normal form. 24/230 useless extension candidates. Maximal degree in co-relation 394. Up to 172 conditions per place. [2025-02-06 13:15:51,860 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 19 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2025-02-06 13:15:51,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 105 flow [2025-02-06 13:15:51,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 13:15:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 13:15:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2025-02-06 13:15:51,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2025-02-06 13:15:51,870 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 4 states and 49 transitions. [2025-02-06 13:15:51,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 105 flow [2025-02-06 13:15:51,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:15:51,875 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 62 flow [2025-02-06 13:15:51,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2025-02-06 13:15:51,879 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2025-02-06 13:15:51,879 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 62 flow [2025-02-06 13:15:51,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:51,879 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:51,880 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:51,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 13:15:51,880 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:15:51,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:51,881 INFO L85 PathProgramCache]: Analyzing trace with hash -60284697, now seen corresponding path program 1 times [2025-02-06 13:15:51,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:51,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997652178] [2025-02-06 13:15:51,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:51,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 13:15:51,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 13:15:51,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:51,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:51,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997652178] [2025-02-06 13:15:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997652178] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:51,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:51,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 13:15:51,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352164108] [2025-02-06 13:15:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:51,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:15:51,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:51,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:15:51,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:15:51,959 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 13:15:51,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 62 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:51,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:51,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 13:15:51,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:52,073 INFO L124 PetriNetUnfolderBase]: 95/211 cut-off events. [2025-02-06 13:15:52,073 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 13:15:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 211 events. 95/211 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 775 event pairs, 32 based on Foata normal form. 4/203 useless extension candidates. Maximal degree in co-relation 392. Up to 158 conditions per place. [2025-02-06 13:15:52,079 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 20 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2025-02-06 13:15:52,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 119 flow [2025-02-06 13:15:52,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:15:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:15:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-02-06 13:15:52,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2025-02-06 13:15:52,081 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 62 flow. Second operand 5 states and 55 transitions. [2025-02-06 13:15:52,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 119 flow [2025-02-06 13:15:52,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 13:15:52,083 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 64 flow [2025-02-06 13:15:52,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2025-02-06 13:15:52,084 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2025-02-06 13:15:52,084 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 64 flow [2025-02-06 13:15:52,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:52,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:52,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 13:15:52,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:15:52,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2098980906, now seen corresponding path program 1 times [2025-02-06 13:15:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:52,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642192901] [2025-02-06 13:15:52,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:52,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 13:15:52,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 13:15:52,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:52,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642192901] [2025-02-06 13:15:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642192901] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:52,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:52,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548674469] [2025-02-06 13:15:52,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:52,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:52,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:52,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:52,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:52,156 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 13:15:52,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:52,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 13:15:52,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:52,220 INFO L124 PetriNetUnfolderBase]: 95/207 cut-off events. [2025-02-06 13:15:52,220 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-02-06 13:15:52,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 207 events. 95/207 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 731 event pairs, 83 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 396. Up to 170 conditions per place. [2025-02-06 13:15:52,225 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 15 selfloop transitions, 1 changer transitions 1/21 dead transitions. [2025-02-06 13:15:52,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 21 transitions, 96 flow [2025-02-06 13:15:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:15:52,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:15:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2025-02-06 13:15:52,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 13:15:52,227 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 64 flow. Second operand 3 states and 36 transitions. [2025-02-06 13:15:52,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 21 transitions, 96 flow [2025-02-06 13:15:52,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 21 transitions, 86 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-02-06 13:15:52,232 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 52 flow [2025-02-06 13:15:52,232 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2025-02-06 13:15:52,233 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2025-02-06 13:15:52,233 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 52 flow [2025-02-06 13:15:52,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,233 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:52,233 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:52,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 13:15:52,233 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:15:52,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:52,234 INFO L85 PathProgramCache]: Analyzing trace with hash -306693463, now seen corresponding path program 1 times [2025-02-06 13:15:52,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:52,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590786970] [2025-02-06 13:15:52,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:52,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:52,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:15:52,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:15:52,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590786970] [2025-02-06 13:15:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590786970] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:52,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 13:15:52,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657891642] [2025-02-06 13:15:52,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:52,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:15:52,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:52,344 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:15:52,344 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:15:52,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 13:15:52,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:52,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 13:15:52,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:52,445 INFO L124 PetriNetUnfolderBase]: 146/282 cut-off events. [2025-02-06 13:15:52,446 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-02-06 13:15:52,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 563 conditions, 282 events. 146/282 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1009 event pairs, 66 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 556. Up to 141 conditions per place. [2025-02-06 13:15:52,447 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 19 selfloop transitions, 3 changer transitions 13/38 dead transitions. [2025-02-06 13:15:52,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 38 transitions, 158 flow [2025-02-06 13:15:52,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:15:52,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:15:52,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 72 transitions. [2025-02-06 13:15:52,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 13:15:52,448 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 52 flow. Second operand 6 states and 72 transitions. [2025-02-06 13:15:52,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 38 transitions, 158 flow [2025-02-06 13:15:52,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:15:52,450 INFO L231 Difference]: Finished difference. Result has 33 places, 20 transitions, 65 flow [2025-02-06 13:15:52,450 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2025-02-06 13:15:52,450 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2025-02-06 13:15:52,450 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 20 transitions, 65 flow [2025-02-06 13:15:52,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:52,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:52,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 13:15:52,451 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:15:52,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:52,451 INFO L85 PathProgramCache]: Analyzing trace with hash -918548657, now seen corresponding path program 1 times [2025-02-06 13:15:52,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:52,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372130691] [2025-02-06 13:15:52,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:52,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:52,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 13:15:52,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 13:15:52,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:52,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372130691] [2025-02-06 13:15:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372130691] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:52,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148033459] [2025-02-06 13:15:52,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:52,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:52,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:52,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:52,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:15:52,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 13:15:52,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 13:15:52,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:52,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:52,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 13:15:52,627 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:15:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148033459] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:15:52,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 13:15:52,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 13:15:52,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076514981] [2025-02-06 13:15:52,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 13:15:52,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 13:15:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:52,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 13:15:52,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-02-06 13:15:52,874 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 13:15:52,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 20 transitions, 65 flow. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:52,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:52,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 13:15:52,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:53,016 INFO L124 PetriNetUnfolderBase]: 129/253 cut-off events. [2025-02-06 13:15:53,016 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2025-02-06 13:15:53,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 253 events. 129/253 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 826 event pairs, 66 based on Foata normal form. 12/241 useless extension candidates. Maximal degree in co-relation 594. Up to 141 conditions per place. [2025-02-06 13:15:53,019 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 24 selfloop transitions, 4 changer transitions 6/37 dead transitions. [2025-02-06 13:15:53,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 171 flow [2025-02-06 13:15:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:15:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:15:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2025-02-06 13:15:53,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2025-02-06 13:15:53,020 INFO L175 Difference]: Start difference. First operand has 33 places, 20 transitions, 65 flow. Second operand 6 states and 71 transitions. [2025-02-06 13:15:53,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 171 flow [2025-02-06 13:15:53,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 163 flow, removed 2 selfloop flow, removed 3 redundant places. [2025-02-06 13:15:53,022 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 77 flow [2025-02-06 13:15:53,022 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2025-02-06 13:15:53,026 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2025-02-06 13:15:53,026 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 77 flow [2025-02-06 13:15:53,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 11 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:53,026 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:53,027 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:53,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 13:15:53,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:53,228 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:15:53,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:53,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1588776809, now seen corresponding path program 2 times [2025-02-06 13:15:53,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:53,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471045538] [2025-02-06 13:15:53,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:53,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:53,240 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 13:15:53,247 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:15:53,247 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:53,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:53,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:53,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 13:15:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471045538] [2025-02-06 13:15:53,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471045538] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 13:15:53,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691881056] [2025-02-06 13:15:53,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 13:15:53,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:53,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:53,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:53,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 13:15:53,372 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-06 13:15:53,381 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 13:15:53,382 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 13:15:53,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:53,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 13:15:53,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:53,427 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:15:53,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691881056] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:53,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 13:15:53,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-06 13:15:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994231956] [2025-02-06 13:15:53,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:53,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 13:15:53,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 13:15:53,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 13:15:53,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 13:15:53,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-06 13:15:53,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 77 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:53,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:53,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-06 13:15:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:53,524 INFO L124 PetriNetUnfolderBase]: 84/178 cut-off events. [2025-02-06 13:15:53,524 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2025-02-06 13:15:53,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 178 events. 84/178 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 533 event pairs, 20 based on Foata normal form. 12/184 useless extension candidates. Maximal degree in co-relation 450. Up to 93 conditions per place. [2025-02-06 13:15:53,525 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 21 selfloop transitions, 2 changer transitions 17/43 dead transitions. [2025-02-06 13:15:53,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 43 transitions, 217 flow [2025-02-06 13:15:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 13:15:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-06 13:15:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2025-02-06 13:15:53,528 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-02-06 13:15:53,528 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 77 flow. Second operand 8 states and 96 transitions. [2025-02-06 13:15:53,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 43 transitions, 217 flow [2025-02-06 13:15:53,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 43 transitions, 201 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-02-06 13:15:53,530 INFO L231 Difference]: Finished difference. Result has 41 places, 21 transitions, 81 flow [2025-02-06 13:15:53,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2025-02-06 13:15:53,530 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2025-02-06 13:15:53,530 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 21 transitions, 81 flow [2025-02-06 13:15:53,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:53,530 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:53,530 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:53,537 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 [2025-02-06 13:15:53,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:53,736 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:15:53,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:53,737 INFO L85 PathProgramCache]: Analyzing trace with hash 519945660, now seen corresponding path program 1 times [2025-02-06 13:15:53,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 13:15:53,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570953424] [2025-02-06 13:15:53,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:53,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 13:15:53,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:15:53,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:53,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:53,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:53,751 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 13:15:53,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:15:53,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:15:53,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:53,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:15:53,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 13:15:53,775 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 13:15:53,776 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-02-06 13:15:53,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-06 13:15:53,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-06 13:15:53,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-02-06 13:15:53,777 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-02-06 13:15:53,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 13:15:53,778 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2025-02-06 13:15:53,805 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 13:15:53,805 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 13:15:53,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 01:15:53 BasicIcfg [2025-02-06 13:15:53,808 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 13:15:53,809 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 13:15:53,809 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 13:15:53,809 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 13:15:53,810 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:51" (3/4) ... [2025-02-06 13:15:53,811 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 13:15:53,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 13:15:53,812 INFO L158 Benchmark]: Toolchain (without parser) took 3247.76ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 85.5MB in the end (delta: 44.6MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2025-02-06 13:15:53,812 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 226.5MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:15:53,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 420.36ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 110.6MB in the end (delta: 19.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 13:15:53,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.49ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 108.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:15:53,815 INFO L158 Benchmark]: Boogie Preprocessor took 29.14ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 107.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:15:53,815 INFO L158 Benchmark]: IcfgBuilder took 370.85ms. Allocated memory is still 167.8MB. Free memory was 107.3MB in the beginning and 87.3MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 13:15:53,815 INFO L158 Benchmark]: TraceAbstraction took 2386.11ms. Allocated memory is still 167.8MB. Free memory was 86.7MB in the beginning and 85.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2025-02-06 13:15:53,815 INFO L158 Benchmark]: Witness Printer took 2.60ms. Allocated memory is still 167.8MB. Free memory was 85.5MB in the beginning and 85.5MB in the end (delta: 3.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:15:53,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 226.5MB. Free memory is still 140.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 420.36ms. Allocated memory is still 167.8MB. Free memory was 130.1MB in the beginning and 110.6MB in the end (delta: 19.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.49ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 108.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.14ms. Allocated memory is still 167.8MB. Free memory was 108.6MB in the beginning and 107.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 370.85ms. Allocated memory is still 167.8MB. Free memory was 107.3MB in the beginning and 87.3MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2386.11ms. Allocated memory is still 167.8MB. Free memory was 86.7MB in the beginning and 85.5MB in the end (delta: 1.2MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. * Witness Printer took 2.60ms. Allocated memory is still 167.8MB. Free memory was 85.5MB in the beginning and 85.5MB in the end (delta: 3.4kB). 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 = 1 [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=1, limit=1] [L773] 0 int i = 0; VAL [_N=1, i=0, limit=1] [L773] COND TRUE 0 i < _N [L774] 0 pthread_t t; [L775] FCALL, FORK 0 pthread_create(&t, 0, f1, 0) VAL [\old(arg)={0:0}, _N=1, i=0, limit=1, t=-1] [L757] 1 int l; [L758] 1 l = limit VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=1] [L773] 0 ++i VAL [\old(arg)={0:0}, _N=1, arg={0:0}, i=1, l=1, limit=1] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=1, t=0] [L759] 1 limit = l + 1 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=2] [L763] 2 int i, bound; [L764] 2 bound = limit [L765] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, l=1, limit=2] [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, l=1, limit=2] [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, l=1, limit=2] [L765] COND FALSE 2 !(i < bound) [L766] CALL 2 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=2] [L752] 2 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=2] - 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: 2.3s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 163 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 159 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 381 IncrementalHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 3 mSDtfsCounter, 381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 319 SizeOfPredicates, 5 NumberOfNonLiveVariables, 165 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 5/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-06 13:15:53,830 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/unwind3-1.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 ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 13:15:56,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 13:15:56,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-06 13:15:56,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 13:15:56,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 13:15:56,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 13:15:56,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 13:15:56,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 13:15:56,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 13:15:56,286 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 13:15:56,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 13:15:56,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 13:15:56,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 13:15:56,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-06 13:15:56,287 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 13:15:56,288 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:56,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 13:15:56,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 13:15:56,288 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 -> ac23e7ddc6ad8a4019915da456e24c280b09a2b1564c0f5287e162f39d98d7fe [2025-02-06 13:15:56,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 13:15:56,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 13:15:56,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 13:15:56,555 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 13:15:56,556 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 13:15:56,557 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-1.i [2025-02-06 13:15:57,921 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff4deb5a0/2ac4bd0e87934d5e8bd89a65f50dc75f/FLAGc631f68dc [2025-02-06 13:15:58,194 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 13:15:58,197 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-1.i [2025-02-06 13:15:58,210 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff4deb5a0/2ac4bd0e87934d5e8bd89a65f50dc75f/FLAGc631f68dc [2025-02-06 13:15:58,224 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ff4deb5a0/2ac4bd0e87934d5e8bd89a65f50dc75f [2025-02-06 13:15:58,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 13:15:58,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 13:15:58,228 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:58,228 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 13:15:58,231 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 13:15:58,231 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,232 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff47b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58, skipping insertion in model container [2025-02-06 13:15:58,232 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 13:15:58,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:58,486 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 13:15:58,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 13:15:58,543 INFO L204 MainTranslator]: Completed translation [2025-02-06 13:15:58,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58 WrapperNode [2025-02-06 13:15:58,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 13:15:58,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:58,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 13:15:58,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 13:15:58,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,603 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 61 [2025-02-06 13:15:58,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 13:15:58,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 13:15:58,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 13:15:58,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 13:15:58,612 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,636 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]. [2025-02-06 13:15:58,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,643 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 13:15:58,648 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 13:15:58,648 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 13:15:58,648 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 13:15:58,649 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (1/1) ... [2025-02-06 13:15:58,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 13:15:58,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:58,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 13:15:58,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 13:15:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 13:15:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-06 13:15:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-06 13:15:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-06 13:15:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-06 13:15:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-06 13:15:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 13:15:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 13:15:58,700 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 13:15:58,792 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 13:15:58,797 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 13:15:58,918 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 13:15:58,918 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 13:15:59,040 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 13:15:59,041 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 13:15:59,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:59 BoogieIcfgContainer [2025-02-06 13:15:59,041 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 13:15:59,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 13:15:59,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 13:15:59,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 13:15:59,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:15:58" (1/3) ... [2025-02-06 13:15:59,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7a280a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:59, skipping insertion in model container [2025-02-06 13:15:59,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:15:58" (2/3) ... [2025-02-06 13:15:59,052 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7a280a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:15:59, skipping insertion in model container [2025-02-06 13:15:59,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:59" (3/3) ... [2025-02-06 13:15:59,053 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-1.i [2025-02-06 13:15:59,064 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 13:15:59,065 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-1.i that has 3 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-06 13:15:59,066 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 13:15:59,140 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 13:15:59,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2025-02-06 13:15:59,195 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-02-06 13:15:59,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:59,203 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 93 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. [2025-02-06 13:15:59,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2025-02-06 13:15:59,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2025-02-06 13:15:59,214 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 13:15:59,223 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;@57624443, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 13:15:59,224 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 13:15:59,232 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 13:15:59,234 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-02-06 13:15:59,234 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:59,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:59,235 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:59,236 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)] === [2025-02-06 13:15:59,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash 308240843, now seen corresponding path program 1 times [2025-02-06 13:15:59,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 13:15:59,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115138780] [2025-02-06 13:15:59,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:59,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:59,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:59,255 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:59,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 13:15:59,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 13:15:59,328 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 13:15:59,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:59,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:59,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 13:15:59,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:59,360 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:15:59,360 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 13:15:59,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115138780] [2025-02-06 13:15:59,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115138780] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:59,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:59,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-06 13:15:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980804912] [2025-02-06 13:15:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:59,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 13:15:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 13:15:59,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 13:15:59,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 13:15:59,383 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 13:15:59,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:59,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:59,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 13:15:59,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:59,445 INFO L124 PetriNetUnfolderBase]: 109/249 cut-off events. [2025-02-06 13:15:59,445 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-06 13:15:59,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 249 events. 109/249 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 987 event pairs, 94 based on Foata normal form. 30/256 useless extension candidates. Maximal degree in co-relation 387. Up to 204 conditions per place. [2025-02-06 13:15:59,448 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 1 changer transitions 1/22 dead transitions. [2025-02-06 13:15:59,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 85 flow [2025-02-06 13:15:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 13:15:59,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 13:15:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2025-02-06 13:15:59,456 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2025-02-06 13:15:59,457 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 38 transitions. [2025-02-06 13:15:59,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 85 flow [2025-02-06 13:15:59,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 13:15:59,460 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 50 flow [2025-02-06 13:15:59,462 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} [2025-02-06 13:15:59,467 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2025-02-06 13:15:59,467 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 50 flow [2025-02-06 13:15:59,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:59,468 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:59,468 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:59,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 13:15:59,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:59,672 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:15:59,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:15:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash 964542951, now seen corresponding path program 1 times [2025-02-06 13:15:59,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 13:15:59,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1940855931] [2025-02-06 13:15:59,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:15:59,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:15:59,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:15:59,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:15:59,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 13:15:59,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 13:15:59,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 13:15:59,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:15:59,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:15:59,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 13:15:59,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:15:59,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:15:59,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:15:59,772 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 13:15:59,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940855931] [2025-02-06 13:15:59,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940855931] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:15:59,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:15:59,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 13:15:59,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955555866] [2025-02-06 13:15:59,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:15:59,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:15:59,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 13:15:59,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:15:59,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:15:59,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-06 13:15:59,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:59,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:15:59,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-06 13:15:59,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:15:59,835 INFO L124 PetriNetUnfolderBase]: 78/178 cut-off events. [2025-02-06 13:15:59,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 13:15:59,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 178 events. 78/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 609 event pairs, 24 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 328. Up to 129 conditions per place. [2025-02-06 13:15:59,836 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 19 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2025-02-06 13:15:59,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 105 flow [2025-02-06 13:15:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 13:15:59,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 13:15:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2025-02-06 13:15:59,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2025-02-06 13:15:59,837 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 50 flow. Second operand 5 states and 55 transitions. [2025-02-06 13:15:59,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 105 flow [2025-02-06 13:15:59,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 13:15:59,838 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 57 flow [2025-02-06 13:15:59,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=57, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2025-02-06 13:15:59,839 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2025-02-06 13:15:59,839 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 57 flow [2025-02-06 13:15:59,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:15:59,839 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:15:59,839 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:15:59,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 13:16:00,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:00,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:16:00,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:00,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1377589547, now seen corresponding path program 1 times [2025-02-06 13:16:00,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 13:16:00,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922890807] [2025-02-06 13:16:00,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:16:00,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:00,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:00,044 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:16:00,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 13:16:00,092 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 13:16:00,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 13:16:00,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:16:00,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:00,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 13:16:00,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:00,152 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 13:16:00,152 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 13:16:00,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922890807] [2025-02-06 13:16:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922890807] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 13:16:00,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 13:16:00,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 13:16:00,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608888646] [2025-02-06 13:16:00,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 13:16:00,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 13:16:00,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 13:16:00,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 13:16:00,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 13:16:00,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-02-06 13:16:00,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:00,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:00,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-02-06 13:16:00,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:00,245 INFO L124 PetriNetUnfolderBase]: 95/207 cut-off events. [2025-02-06 13:16:00,245 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-02-06 13:16:00,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 207 events. 95/207 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 745 event pairs, 35 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 399. Up to 83 conditions per place. [2025-02-06 13:16:00,246 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 27 selfloop transitions, 7 changer transitions 0/38 dead transitions. [2025-02-06 13:16:00,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 169 flow [2025-02-06 13:16:00,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 13:16:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 13:16:00,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2025-02-06 13:16:00,248 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-02-06 13:16:00,248 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 57 flow. Second operand 6 states and 78 transitions. [2025-02-06 13:16:00,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 169 flow [2025-02-06 13:16:00,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 13:16:00,249 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 92 flow [2025-02-06 13:16:00,249 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2025-02-06 13:16:00,249 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2025-02-06 13:16:00,249 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 92 flow [2025-02-06 13:16:00,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:00,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:00,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:00,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 13:16:00,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:00,454 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:16:00,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash -245382897, now seen corresponding path program 1 times [2025-02-06 13:16:00,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 13:16:00,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170695767] [2025-02-06 13:16:00,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:16:00,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:00,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:00,458 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) [2025-02-06 13:16:00,459 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 [2025-02-06 13:16:00,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 13:16:00,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 13:16:00,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:16:00,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 13:16:00,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 13:16:00,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 13:16:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:00,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 13:16:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 13:16:00,698 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-06 13:16:00,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170695767] [2025-02-06 13:16:00,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170695767] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 13:16:00,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 13:16:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2025-02-06 13:16:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099512266] [2025-02-06 13:16:00,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 13:16:00,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 13:16:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-06 13:16:00,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 13:16:00,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2025-02-06 13:16:00,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-02-06 13:16:00,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 92 flow. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:00,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 13:16:00,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-02-06 13:16:00,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 13:16:01,034 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2025-02-06 13:16:01,034 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2025-02-06 13:16:01,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 301 events. 153/301 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1100 event pairs, 9 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 782. Up to 68 conditions per place. [2025-02-06 13:16:01,036 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 23 selfloop transitions, 11 changer transitions 42/78 dead transitions. [2025-02-06 13:16:01,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 394 flow [2025-02-06 13:16:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 13:16:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-02-06 13:16:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 167 transitions. [2025-02-06 13:16:01,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3638344226579521 [2025-02-06 13:16:01,038 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 92 flow. Second operand 17 states and 167 transitions. [2025-02-06 13:16:01,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 394 flow [2025-02-06 13:16:01,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 381 flow, removed 2 selfloop flow, removed 2 redundant places. [2025-02-06 13:16:01,040 INFO L231 Difference]: Finished difference. Result has 58 places, 25 transitions, 145 flow [2025-02-06 13:16:01,040 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=145, PETRI_PLACES=58, PETRI_TRANSITIONS=25} [2025-02-06 13:16:01,041 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2025-02-06 13:16:01,041 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 25 transitions, 145 flow [2025-02-06 13:16:01,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 13:16:01,041 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 13:16:01,041 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 13:16:01,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 13:16:01,241 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 [2025-02-06 13:16:01,242 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 13:16:01,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 13:16:01,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1598798782, now seen corresponding path program 1 times [2025-02-06 13:16:01,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-06 13:16:01,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039435731] [2025-02-06 13:16:01,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 13:16:01,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:01,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 13:16:01,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 13:16:01,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 13:16:01,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:16:01,295 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:16:01,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:16:01,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:16:01,295 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 13:16:01,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 13:16:01,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 13:16:01,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 13:16:01,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 13:16:01,323 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-06 13:16:01,324 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-06 13:16:01,324 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-02-06 13:16:01,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-06 13:16:01,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-06 13:16:01,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-02-06 13:16:01,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-02-06 13:16:01,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 13:16:01,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 13:16:01,526 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-02-06 13:16:01,545 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 13:16:01,545 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 13:16:01,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 01:16:01 BasicIcfg [2025-02-06 13:16:01,549 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 13:16:01,549 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 13:16:01,549 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 13:16:01,549 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 13:16:01,549 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:15:59" (3/4) ... [2025-02-06 13:16:01,550 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 13:16:01,551 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 13:16:01,551 INFO L158 Benchmark]: Toolchain (without parser) took 3324.63ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 49.3MB in the end (delta: 41.5MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2025-02-06 13:16:01,551 INFO L158 Benchmark]: CDTParser took 3.99ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:16:01,552 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.32ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 70.1MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 13:16:01,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.22ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 68.4MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 13:16:01,552 INFO L158 Benchmark]: Boogie Preprocessor took 43.90ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 66.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:16:01,552 INFO L158 Benchmark]: IcfgBuilder took 393.24ms. Allocated memory is still 117.4MB. Free memory was 66.5MB in the beginning and 41.8MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 13:16:01,552 INFO L158 Benchmark]: TraceAbstraction took 2504.28ms. Allocated memory is still 117.4MB. Free memory was 41.3MB in the beginning and 49.3MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:16:01,552 INFO L158 Benchmark]: Witness Printer took 1.91ms. Allocated memory is still 117.4MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 8.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 13:16:01,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.99ms. Allocated memory is still 83.9MB. Free memory is still 61.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.32ms. Allocated memory is still 117.4MB. Free memory was 90.5MB in the beginning and 70.1MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.22ms. Allocated memory is still 117.4MB. Free memory was 70.1MB in the beginning and 68.4MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.90ms. Allocated memory is still 117.4MB. Free memory was 68.4MB in the beginning and 66.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 393.24ms. Allocated memory is still 117.4MB. Free memory was 66.5MB in the beginning and 41.8MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2504.28ms. Allocated memory is still 117.4MB. Free memory was 41.3MB in the beginning and 49.3MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 1.91ms. Allocated memory is still 117.4MB. Free memory was 49.3MB in the beginning and 49.3MB in the end (delta: 8.4kB). 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 = 1 [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=1, limit=1] [L773] 0 int i = 0; VAL [_N=1, i=0, limit=1] [L773] COND TRUE 0 i < _N [L774] 0 pthread_t t; [L775] FCALL, FORK 0 pthread_create(&t, 0, f1, 0) VAL [\old(arg)={0:0}, _N=1, i=0, limit=1, t=-1] [L757] 1 int l; [L758] 1 l = limit VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=1] [L773] 0 ++i VAL [\old(arg)={0:0}, _N=1, arg={0:0}, i=1, l=1, limit=1] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=1, t=0] [L759] 1 limit = l + 1 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=2] [L763] 2 int i, bound; [L764] 2 bound = limit [L765] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, l=1, limit=2] [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, l=1, limit=2] [L765] COND TRUE 2 i < bound [L765] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, l=1, limit=2] [L765] COND FALSE 2 !(i < bound) [L766] CALL 2 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=2] [L752] 2 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, l=1, limit=2] - 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: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 399 IncrementalHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 399 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=4, InterpolantAutomatonStates: 31, 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, 0.3s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 7 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-06 13:16:01,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample