./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:47:00,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:47:00,074 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:47:00,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:47:00,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:47:00,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:47:00,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:47:00,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:47:00,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:47:00,105 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:47:00,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:47:00,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:47:00,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:47:00,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:47:00,106 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:47:00,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:47:00,106 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:47:00,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:47:00,106 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:47:00,107 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:47:00,108 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:47:00,108 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:47:00,108 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:47:00,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:47:00,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:47:00,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:47:00,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:47:00,108 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:47:00,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:47:00,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:47:00,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:47:00,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:47:00,110 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:47:00,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:47:00,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:47:00,110 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2025-02-08 08:47:00,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:47:00,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:47:00,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:47:00,424 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:47:00,424 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:47:00,425 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-02-08 08:47:01,770 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2230d3579/93de921c8fcc401987f4d8bfc3fe213d/FLAGb9ac73c05 [2025-02-08 08:47:02,070 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:47:02,070 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-02-08 08:47:02,092 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2230d3579/93de921c8fcc401987f4d8bfc3fe213d/FLAGb9ac73c05 [2025-02-08 08:47:02,106 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2230d3579/93de921c8fcc401987f4d8bfc3fe213d [2025-02-08 08:47:02,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:47:02,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:47:02,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:47:02,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:47:02,113 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:47:02,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ef7baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02, skipping insertion in model container [2025-02-08 08:47:02,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:47:02,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:47:02,426 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:47:02,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:47:02,496 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:47:02,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02 WrapperNode [2025-02-08 08:47:02,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:47:02,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:47:02,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:47:02,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:47:02,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,519 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,536 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2025-02-08 08:47:02,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:47:02,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:47:02,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:47:02,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:47:02,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,553 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]. [2025-02-08 08:47:02,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,564 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:47:02,565 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:47:02,565 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:47:02,565 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:47:02,566 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (1/1) ... [2025-02-08 08:47:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:47:02,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:47:02,592 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:47:02,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:47:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:47:02,611 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-08 08:47:02,611 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-08 08:47:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-08 08:47:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-08 08:47:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:47:02,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:47:02,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:47:02,613 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:47:02,722 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:47:02,723 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:47:02,906 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:47:02,906 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:47:03,027 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:47:03,027 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:47:03,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:47:03 BoogieIcfgContainer [2025-02-08 08:47:03,027 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:47:03,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:47:03,030 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:47:03,040 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:47:03,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:47:02" (1/3) ... [2025-02-08 08:47:03,041 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157b0993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:47:03, skipping insertion in model container [2025-02-08 08:47:03,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:02" (2/3) ... [2025-02-08 08:47:03,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157b0993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:47:03, skipping insertion in model container [2025-02-08 08:47:03,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:47:03" (3/3) ... [2025-02-08 08:47:03,044 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-02-08 08:47:03,057 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:47:03,059 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:47:03,059 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:47:03,103 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:47:03,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2025-02-08 08:47:03,163 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-02-08 08:47:03,165 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:47:03,169 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 98 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. [2025-02-08 08:47:03,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2025-02-08 08:47:03,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2025-02-08 08:47:03,182 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:47:03,193 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;@b3bfa35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:47:03,193 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 08:47:03,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:47:03,201 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-02-08 08:47:03,201 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:47:03,201 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:03,202 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:03,202 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)] === [2025-02-08 08:47:03,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:03,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2094310771, now seen corresponding path program 1 times [2025-02-08 08:47:03,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:47:03,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216167998] [2025-02-08 08:47:03,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:03,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:47:03,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 08:47:03,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 08:47:03,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:03,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:47:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:47:03,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:47:03,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216167998] [2025-02-08 08:47:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216167998] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:47:03,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:47:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:47:03,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575579190] [2025-02-08 08:47:03,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:47:03,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:47:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:47:03,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:47:03,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:47:03,487 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:47:03,489 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) [2025-02-08 08:47:03,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:47:03,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:47:03,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:47:03,627 INFO L124 PetriNetUnfolderBase]: 109/245 cut-off events. [2025-02-08 08:47:03,627 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:47:03,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 245 events. 109/245 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 970 event pairs, 94 based on Foata normal form. 30/249 useless extension candidates. Maximal degree in co-relation 384. Up to 204 conditions per place. [2025-02-08 08:47:03,634 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 1 changer transitions 1/22 dead transitions. [2025-02-08 08:47:03,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 85 flow [2025-02-08 08:47:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:47:03,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:47:03,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2025-02-08 08:47:03,648 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2025-02-08 08:47:03,650 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 38 transitions. [2025-02-08 08:47:03,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 85 flow [2025-02-08 08:47:03,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:47:03,655 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 50 flow [2025-02-08 08:47:03,657 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} [2025-02-08 08:47:03,660 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2025-02-08 08:47:03,660 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 50 flow [2025-02-08 08:47:03,660 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) [2025-02-08 08:47:03,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:03,660 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:03,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:47:03,660 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)] === [2025-02-08 08:47:03,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:03,661 INFO L85 PathProgramCache]: Analyzing trace with hash -500112119, now seen corresponding path program 1 times [2025-02-08 08:47:03,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:47:03,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382792861] [2025-02-08 08:47:03,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:03,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:47:03,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:47:03,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:47:03,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:03,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:03,684 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:47:03,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:47:03,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:47:03,699 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:03,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:03,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:47:03,719 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:47:03,720 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-02-08 08:47:03,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-08 08:47:03,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-08 08:47:03,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-02-08 08:47:03,721 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-02-08 08:47:03,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 08:47:03,722 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 08:47:03,724 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 08:47:03,724 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 08:47:03,749 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:47:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2025-02-08 08:47:03,763 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2025-02-08 08:47:03,764 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:47:03,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 182 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2025-02-08 08:47:03,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2025-02-08 08:47:03,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2025-02-08 08:47:03,768 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:47:03,769 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;@b3bfa35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:47:03,769 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 08:47:03,775 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:47:03,777 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2025-02-08 08:47:03,777 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:47:03,777 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:03,777 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:03,778 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:47:03,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1314255129, now seen corresponding path program 1 times [2025-02-08 08:47:03,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:47:03,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743827939] [2025-02-08 08:47:03,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:03,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:47:03,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 08:47:03,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 08:47:03,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:03,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:47:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:47:03,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:47:03,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743827939] [2025-02-08 08:47:03,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743827939] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:47:03,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:47:03,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:47:03,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621532271] [2025-02-08 08:47:03,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:47:03,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:47:03,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:47:03,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:47:03,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:47:03,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-02-08 08:47:03,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:47:03,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:47:03,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-02-08 08:47:03,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:47:04,049 INFO L124 PetriNetUnfolderBase]: 729/1200 cut-off events. [2025-02-08 08:47:04,050 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2025-02-08 08:47:04,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1200 events. 729/1200 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5387 event pairs, 666 based on Foata normal form. 114/1219 useless extension candidates. Maximal degree in co-relation 874. Up to 1128 conditions per place. [2025-02-08 08:47:04,062 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 19 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2025-02-08 08:47:04,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 107 flow [2025-02-08 08:47:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:47:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:47:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-02-08 08:47:04,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2025-02-08 08:47:04,065 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 3 states and 51 transitions. [2025-02-08 08:47:04,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 107 flow [2025-02-08 08:47:04,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:47:04,067 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 64 flow [2025-02-08 08:47:04,068 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2025-02-08 08:47:04,069 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-02-08 08:47:04,069 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 64 flow [2025-02-08 08:47:04,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:47:04,069 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:04,069 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:04,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 08:47:04,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:47:04,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash -45242771, now seen corresponding path program 1 times [2025-02-08 08:47:04,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:47:04,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469545265] [2025-02-08 08:47:04,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:04,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:47:04,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:47:04,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:47:04,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:04,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:04,102 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:47:04,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:47:04,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:47:04,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:04,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:04,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:47:04,119 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:47:04,119 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-02-08 08:47:04,119 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-02-08 08:47:04,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-02-08 08:47:04,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-02-08 08:47:04,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-02-08 08:47:04,120 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-02-08 08:47:04,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 08:47:04,120 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 08:47:04,144 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2025-02-08 08:47:04,145 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:47:04,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:47:04 BasicIcfg [2025-02-08 08:47:04,150 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:47:04,151 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:47:04,151 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:47:04,152 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:47:04,152 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:47:03" (3/4) ... [2025-02-08 08:47:04,154 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:47:04,155 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:47:04,156 INFO L158 Benchmark]: Toolchain (without parser) took 2046.99ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 47.6MB in the end (delta: 63.6MB). Peak memory consumption was 65.5MB. Max. memory is 16.1GB. [2025-02-08 08:47:04,156 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:47:04,156 INFO L158 Benchmark]: CACSL2BoogieTranslator took 387.66ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 91.7MB in the end (delta: 19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:47:04,157 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.31ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 89.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:47:04,157 INFO L158 Benchmark]: Boogie Preprocessor took 26.75ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:47:04,157 INFO L158 Benchmark]: IcfgBuilder took 462.65ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 67.5MB in the end (delta: 20.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:47:04,157 INFO L158 Benchmark]: TraceAbstraction took 1120.79ms. Allocated memory is still 142.6MB. Free memory was 66.5MB in the beginning and 48.4MB in the end (delta: 18.1MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. [2025-02-08 08:47:04,158 INFO L158 Benchmark]: Witness Printer took 3.92ms. Allocated memory is still 142.6MB. Free memory was 48.4MB in the beginning and 47.6MB in the end (delta: 800.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:47:04,161 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 122.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 387.66ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 91.7MB in the end (delta: 19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.31ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 89.6MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.75ms. Allocated memory is still 142.6MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 462.65ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 67.5MB in the end (delta: 20.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1120.79ms. Allocated memory is still 142.6MB. Free memory was 66.5MB in the beginning and 48.4MB in the end (delta: 18.1MB). Peak memory consumption was 32.0MB. Max. memory is 16.1GB. * Witness Printer took 3.92ms. Allocated memory is still 142.6MB. Free memory was 48.4MB in the beginning and 47.6MB in the end (delta: 800.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L770] 0 _N = __VERIFIER_nondet_int() [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=0, limit=0] [L773] 0 int i = 0; VAL [_N=0, i=0, limit=0] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [_N=0, limit=0, t=-1] [L763] 1 int i, bound; [L764] 1 bound = limit [L765] 1 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, limit=0] [L765] COND FALSE 1 !(i < bound) [L766] CALL 1 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 1 !expression [L753] CALL 1 reach_error() [L752] COND FALSE 1 !(0) VAL [_N=0, limit=0] [L752] 1 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 52 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:47:04,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:47:06,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:47:06,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:47:06,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:47:06,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:47:06,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:47:06,552 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:47:06,552 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:47:06,553 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:47:06,553 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:47:06,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:47:06,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:47:06,553 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:47:06,553 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:47:06,553 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:47:06,554 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:47:06,554 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:47:06,555 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:47:06,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:47:06,555 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:47:06,556 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:47:06,556 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:47:06,556 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:47:06,556 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:47:06,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:47:06,556 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2025-02-08 08:47:06,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:47:06,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:47:06,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:47:06,888 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:47:06,889 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:47:06,890 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-02-08 08:47:08,211 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36577a606/0f02c943422a4c0b918be86b1ec27b6f/FLAG4583fc71b [2025-02-08 08:47:08,515 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:47:08,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-02-08 08:47:08,533 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36577a606/0f02c943422a4c0b918be86b1ec27b6f/FLAG4583fc71b [2025-02-08 08:47:08,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/36577a606/0f02c943422a4c0b918be86b1ec27b6f [2025-02-08 08:47:08,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:47:08,779 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:47:08,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:47:08,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:47:08,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:47:08,784 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:47:08" (1/1) ... [2025-02-08 08:47:08,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f92aae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:08, skipping insertion in model container [2025-02-08 08:47:08,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:47:08" (1/1) ... [2025-02-08 08:47:08,817 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:47:09,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:47:09,100 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:47:09,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:47:09,190 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:47:09,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09 WrapperNode [2025-02-08 08:47:09,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:47:09,193 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:47:09,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:47:09,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:47:09,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,238 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 63 [2025-02-08 08:47:09,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:47:09,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:47:09,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:47:09,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:47:09,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,271 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]. [2025-02-08 08:47:09,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,275 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,285 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:47:09,293 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:47:09,293 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:47:09,293 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:47:09,294 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (1/1) ... [2025-02-08 08:47:09,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:47:09,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:47:09,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 08:47:09,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 08:47:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:47:09,350 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-08 08:47:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-08 08:47:09,351 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-08 08:47:09,351 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-08 08:47:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:47:09,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:47:09,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:47:09,353 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 08:47:09,469 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:47:09,471 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:47:09,632 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:47:09,632 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:47:09,752 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:47:09,752 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:47:09,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:47:09 BoogieIcfgContainer [2025-02-08 08:47:09,753 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:47:09,755 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:47:09,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:47:09,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:47:09,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:47:08" (1/3) ... [2025-02-08 08:47:09,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a136c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:47:09, skipping insertion in model container [2025-02-08 08:47:09,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:47:09" (2/3) ... [2025-02-08 08:47:09,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a136c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:47:09, skipping insertion in model container [2025-02-08 08:47:09,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:47:09" (3/3) ... [2025-02-08 08:47:09,763 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-02-08 08:47:09,779 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:47:09,780 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 24 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-02-08 08:47:09,780 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:47:09,827 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:47:09,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 62 flow [2025-02-08 08:47:09,881 INFO L124 PetriNetUnfolderBase]: 6/43 cut-off events. [2025-02-08 08:47:09,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:47:09,886 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 98 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. [2025-02-08 08:47:09,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 27 transitions, 62 flow [2025-02-08 08:47:09,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 59 flow [2025-02-08 08:47:09,902 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:47:09,913 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;@37c8c30e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:47:09,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 08:47:09,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:47:09,925 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2025-02-08 08:47:09,926 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 08:47:09,926 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:09,926 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:09,927 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)] === [2025-02-08 08:47:09,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:09,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2094310771, now seen corresponding path program 1 times [2025-02-08 08:47:09,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:47:09,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651030924] [2025-02-08 08:47:09,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:09,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:47:09,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:47:09,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:47:09,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-08 08:47:10,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 08:47:10,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 08:47:10,032 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:10,032 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:47:10,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 08:47:10,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:47:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:47:10,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:47:10,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:47:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651030924] [2025-02-08 08:47:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651030924] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:47:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:47:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:47:10,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427022611] [2025-02-08 08:47:10,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:47:10,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:47:10,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:47:10,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:47:10,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:47:10,103 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-02-08 08:47:10,105 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) [2025-02-08 08:47:10,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:47:10,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-02-08 08:47:10,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:47:10,217 INFO L124 PetriNetUnfolderBase]: 109/245 cut-off events. [2025-02-08 08:47:10,217 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:47:10,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 245 events. 109/245 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 970 event pairs, 94 based on Foata normal form. 30/249 useless extension candidates. Maximal degree in co-relation 384. Up to 204 conditions per place. [2025-02-08 08:47:10,222 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 15 selfloop transitions, 1 changer transitions 1/22 dead transitions. [2025-02-08 08:47:10,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 85 flow [2025-02-08 08:47:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:47:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:47:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2025-02-08 08:47:10,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2025-02-08 08:47:10,233 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 59 flow. Second operand 3 states and 38 transitions. [2025-02-08 08:47:10,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 85 flow [2025-02-08 08:47:10,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:47:10,237 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 50 flow [2025-02-08 08:47:10,239 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} [2025-02-08 08:47:10,242 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2025-02-08 08:47:10,242 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 50 flow [2025-02-08 08:47:10,242 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) [2025-02-08 08:47:10,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:10,243 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:10,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 08:47:10,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:47:10,445 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)] === [2025-02-08 08:47:10,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:10,446 INFO L85 PathProgramCache]: Analyzing trace with hash -500112119, now seen corresponding path program 1 times [2025-02-08 08:47:10,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:47:10,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335884834] [2025-02-08 08:47:10,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:10,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:47:10,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:47:10,448 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:47:10,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-08 08:47:10,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:47:10,507 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:47:10,508 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:10,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:10,508 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:47:10,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 08:47:10,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 08:47:10,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:10,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:10,537 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 08:47:10,538 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:47:10,539 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2025-02-08 08:47:10,540 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-08 08:47:10,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-08 08:47:10,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2025-02-08 08:47:10,541 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-02-08 08:47:10,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 08:47:10,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:47:10,742 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 08:47:10,744 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 08:47:10,744 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 08:47:10,776 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 08:47:10,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 106 flow [2025-02-08 08:47:10,794 INFO L124 PetriNetUnfolderBase]: 9/65 cut-off events. [2025-02-08 08:47:10,794 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:47:10,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 65 events. 9/65 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 182 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 76. Up to 6 conditions per place. [2025-02-08 08:47:10,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 106 flow [2025-02-08 08:47:10,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 30 transitions, 73 flow [2025-02-08 08:47:10,796 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:47:10,796 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;@37c8c30e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:47:10,796 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-02-08 08:47:10,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:47:10,800 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2025-02-08 08:47:10,800 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:47:10,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:10,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:10,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:47:10,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1314255129, now seen corresponding path program 1 times [2025-02-08 08:47:10,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:47:10,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2020906918] [2025-02-08 08:47:10,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:10,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:47:10,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:47:10,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:47:10,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-08 08:47:10,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 08:47:10,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 08:47:10,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:10,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:47:10,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 08:47:10,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:47:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:47:10,883 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:47:10,883 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:47:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020906918] [2025-02-08 08:47:10,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020906918] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:47:10,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:47:10,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 08:47:10,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281945051] [2025-02-08 08:47:10,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:47:10,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 08:47:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:47:10,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 08:47:10,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 08:47:10,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 43 [2025-02-08 08:47:10,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:47:10,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:47:10,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 43 [2025-02-08 08:47:10,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:47:11,064 INFO L124 PetriNetUnfolderBase]: 729/1200 cut-off events. [2025-02-08 08:47:11,064 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2025-02-08 08:47:11,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1200 events. 729/1200 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5387 event pairs, 666 based on Foata normal form. 114/1219 useless extension candidates. Maximal degree in co-relation 874. Up to 1128 conditions per place. [2025-02-08 08:47:11,076 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 19 selfloop transitions, 1 changer transitions 1/26 dead transitions. [2025-02-08 08:47:11,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 107 flow [2025-02-08 08:47:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 08:47:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 08:47:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2025-02-08 08:47:11,078 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3953488372093023 [2025-02-08 08:47:11,079 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 73 flow. Second operand 3 states and 51 transitions. [2025-02-08 08:47:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 107 flow [2025-02-08 08:47:11,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:47:11,081 INFO L231 Difference]: Finished difference. Result has 34 places, 25 transitions, 64 flow [2025-02-08 08:47:11,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=25} [2025-02-08 08:47:11,082 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2025-02-08 08:47:11,082 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 25 transitions, 64 flow [2025-02-08 08:47:11,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:47:11,083 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:47:11,083 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:47:11,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 08:47:11,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:47:11,287 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-02-08 08:47:11,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:47:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash -45242771, now seen corresponding path program 1 times [2025-02-08 08:47:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:47:11,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976643689] [2025-02-08 08:47:11,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:47:11,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:47:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:47:11,290 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) [2025-02-08 08:47:11,291 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 [2025-02-08 08:47:11,346 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:47:11,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:47:11,354 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:11,354 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:11,354 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:47:11,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:47:11,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:47:11,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:47:11,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:47:11,391 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 08:47:11,392 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:47:11,392 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2025-02-08 08:47:11,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2025-02-08 08:47:11,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-02-08 08:47:11,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-02-08 08:47:11,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2025-02-08 08:47:11,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2025-02-08 08:47:11,400 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 08:47:11,593 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 [2025-02-08 08:47:11,593 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 08:47:11,617 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2025-02-08 08:47:11,617 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:47:11,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:47:11 BasicIcfg [2025-02-08 08:47:11,622 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:47:11,623 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:47:11,623 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:47:11,623 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:47:11,624 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:47:09" (3/4) ... [2025-02-08 08:47:11,626 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:47:11,627 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:47:11,627 INFO L158 Benchmark]: Toolchain (without parser) took 2847.73ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 53.0MB in the end (delta: 4.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2025-02-08 08:47:11,627 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:47:11,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.85ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 37.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 08:47:11,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.83ms. Allocated memory is still 83.9MB. Free memory was 37.3MB in the beginning and 35.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:47:11,628 INFO L158 Benchmark]: Boogie Preprocessor took 51.96ms. Allocated memory is still 83.9MB. Free memory was 35.5MB in the beginning and 33.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:47:11,628 INFO L158 Benchmark]: IcfgBuilder took 460.32ms. Allocated memory is still 83.9MB. Free memory was 33.6MB in the beginning and 46.7MB in the end (delta: -13.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2025-02-08 08:47:11,628 INFO L158 Benchmark]: TraceAbstraction took 1866.92ms. Allocated memory is still 83.9MB. Free memory was 46.2MB in the beginning and 53.6MB in the end (delta: -7.5MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. [2025-02-08 08:47:11,629 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.0MB in the end (delta: 591.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:47:11,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.85ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 37.3MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.83ms. Allocated memory is still 83.9MB. Free memory was 37.3MB in the beginning and 35.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.96ms. Allocated memory is still 83.9MB. Free memory was 35.5MB in the beginning and 33.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 460.32ms. Allocated memory is still 83.9MB. Free memory was 33.6MB in the beginning and 46.7MB in the end (delta: -13.0MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1866.92ms. Allocated memory is still 83.9MB. Free memory was 46.2MB in the beginning and 53.6MB in the end (delta: -7.5MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 83.9MB. Free memory was 53.6MB in the beginning and 53.0MB in the end (delta: 591.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 752]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 752. Possible FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L770] 0 _N = __VERIFIER_nondet_int() [L771] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L750] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff / 2) [L772] 0 limit = _N VAL [_N=0, limit=0] [L773] 0 int i = 0; VAL [_N=0, i=0, limit=0] [L773] COND FALSE 0 !(i < _N) [L777] 0 pthread_t t; [L778] FCALL, FORK 0 pthread_create(&t, 0, f2, 0) VAL [_N=0, limit=0, t=0] [L763] 1 int i, bound; [L764] 1 bound = limit [L765] 1 i = 0 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, bound=0, i=0, limit=0] [L765] COND FALSE 1 !(i < bound) [L766] CALL 1 __VERIFIER_assert(i != 2 * _N) [L753] COND TRUE 1 !expression [L753] CALL 1 reach_error() [L752] COND FALSE 1 !(0) VAL [_N=0, limit=0] [L752] 1 __assert_fail ("0", "generated/unwind3.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [_N=0, limit=0] - UnprovableResult [Line: 769]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 39 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 52 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 0 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:47:11,646 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