./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-theta/unwind1-1.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/unwind1-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:46:32,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:46:33,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 08:46:33,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:46:33,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:46:33,060 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:46:33,060 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:46:33,060 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:46:33,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:46:33,060 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:46:33,061 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:46:33,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:46:33,061 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:46:33,061 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:46:33,062 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:46:33,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:46:33,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:46:33,062 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 -> 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e [2025-02-08 08:46:33,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:46:33,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:46:33,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:46:33,319 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:46:33,320 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:46:33,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-02-08 08:46:34,477 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/891badc9a/9a96f27fc1884dc6b2190be662b0c9c5/FLAG9ac4c2596 [2025-02-08 08:46:34,752 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:46:34,754 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-02-08 08:46:34,770 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/891badc9a/9a96f27fc1884dc6b2190be662b0c9c5/FLAG9ac4c2596 [2025-02-08 08:46:34,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/891badc9a/9a96f27fc1884dc6b2190be662b0c9c5 [2025-02-08 08:46:34,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:46:34,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:46:34,796 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:46:34,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:46:34,800 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:46:34,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:46:34" (1/1) ... [2025-02-08 08:46:34,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ba6f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:34, skipping insertion in model container [2025-02-08 08:46:34,802 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:46:34" (1/1) ... [2025-02-08 08:46:34,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:46:35,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:46:35,110 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:46:35,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:46:35,161 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:46:35,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35 WrapperNode [2025-02-08 08:46:35,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:46:35,163 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:46:35,163 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:46:35,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:46:35,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,190 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 53 [2025-02-08 08:46:35,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:46:35,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:46:35,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:46:35,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:46:35,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,198 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,210 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 08:46:35,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,216 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:46:35,225 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:46:35,226 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:46:35,226 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:46:35,227 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (1/1) ... [2025-02-08 08:46:35,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:46:35,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:35,254 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 08:46:35,259 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 08:46:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:46:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-08 08:46:35,275 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-08 08:46:35,275 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-08 08:46:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-08 08:46:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 08:46:35,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:46:35,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:46:35,278 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 08:46:35,369 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:46:35,371 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:46:35,489 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:46:35,489 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:46:35,557 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:46:35,557 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:46:35,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:46:35 BoogieIcfgContainer [2025-02-08 08:46:35,557 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:46:35,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:46:35,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:46:35,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:46:35,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:46:34" (1/3) ... [2025-02-08 08:46:35,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b8afdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:46:35, skipping insertion in model container [2025-02-08 08:46:35,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:35" (2/3) ... [2025-02-08 08:46:35,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b8afdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:46:35, skipping insertion in model container [2025-02-08 08:46:35,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:46:35" (3/3) ... [2025-02-08 08:46:35,565 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2025-02-08 08:46:35,578 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:46:35,580 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-1.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-08 08:46:35,580 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:46:35,617 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 08:46:35,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2025-02-08 08:46:35,665 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-08 08:46:35,668 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:46:35,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-02-08 08:46:35,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2025-02-08 08:46:35,673 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2025-02-08 08:46:35,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:46:35,686 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;@3e26d9e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:46:35,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 08:46:35,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:46:35,692 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-02-08 08:46:35,692 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:46:35,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:35,693 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:35,693 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:35,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:35,699 INFO L85 PathProgramCache]: Analyzing trace with hash 2061330347, now seen corresponding path program 1 times [2025-02-08 08:46:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:46:35,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139745817] [2025-02-08 08:46:35,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:35,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:46:35,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:46:35,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:46:35,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:35,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:36,011 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 08:46:36,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:46:36,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139745817] [2025-02-08 08:46:36,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139745817] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:46:36,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:46:36,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:46:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275725261] [2025-02-08 08:46:36,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:46:36,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:46:36,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:46:36,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:46:36,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:46:36,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-08 08:46:36,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:46:36,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:36,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-08 08:46:36,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:36,228 INFO L124 PetriNetUnfolderBase]: 203/376 cut-off events. [2025-02-08 08:46:36,228 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2025-02-08 08:46:36,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 376 events. 203/376 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1421 event pairs, 83 based on Foata normal form. 26/341 useless extension candidates. Maximal degree in co-relation 684. Up to 187 conditions per place. [2025-02-08 08:46:36,236 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 41 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2025-02-08 08:46:36,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 52 transitions, 224 flow [2025-02-08 08:46:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 08:46:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 08:46:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-02-08 08:46:36,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-02-08 08:46:36,248 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 6 states and 87 transitions. [2025-02-08 08:46:36,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 52 transitions, 224 flow [2025-02-08 08:46:36,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 08:46:36,254 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 91 flow [2025-02-08 08:46:36,256 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2025-02-08 08:46:36,263 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2025-02-08 08:46:36,263 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 91 flow [2025-02-08 08:46:36,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:46:36,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:36,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:36,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 08:46:36,264 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:36,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash -524254582, now seen corresponding path program 1 times [2025-02-08 08:46:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:46:36,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994932814] [2025-02-08 08:46:36,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:46:36,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:46:36,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:46:36,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:36,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:46:36,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994932814] [2025-02-08 08:46:36,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994932814] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:46:36,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900431049] [2025-02-08 08:46:36,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:36,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:36,370 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 08:46:36,370 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 08:46:36,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:46:36,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:46:36,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:36,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:36,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:46:36,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:46:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:36,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:46:36,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900431049] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:46:36,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 08:46:36,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-02-08 08:46:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661910795] [2025-02-08 08:46:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:46:36,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:46:36,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:46:36,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:46:36,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:46:36,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:46:36,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 08:46:36,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:36,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:46:36,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:36,543 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2025-02-08 08:46:36,543 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2025-02-08 08:46:36,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 625 conditions, 247 events. 111/247 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 949 event pairs, 30 based on Foata normal form. 13/245 useless extension candidates. Maximal degree in co-relation 312. Up to 97 conditions per place. [2025-02-08 08:46:36,545 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2025-02-08 08:46:36,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 228 flow [2025-02-08 08:46:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:46:36,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:46:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2025-02-08 08:46:36,549 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2025-02-08 08:46:36,549 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 91 flow. Second operand 5 states and 73 transitions. [2025-02-08 08:46:36,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 228 flow [2025-02-08 08:46:36,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:46:36,553 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 127 flow [2025-02-08 08:46:36,554 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2025-02-08 08:46:36,554 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2025-02-08 08:46:36,555 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 127 flow [2025-02-08 08:46:36,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 08:46:36,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:36,555 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:36,569 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 08:46:36,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:36,759 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:36,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:36,760 INFO L85 PathProgramCache]: Analyzing trace with hash -2003139732, now seen corresponding path program 1 times [2025-02-08 08:46:36,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:46:36,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369945037] [2025-02-08 08:46:36,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:36,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:46:36,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:46:36,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:46:36,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:36,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:36,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:36,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:46:36,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369945037] [2025-02-08 08:46:36,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369945037] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:46:36,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258437085] [2025-02-08 08:46:36,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:36,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:36,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:36,906 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 08:46:36,908 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 08:46:36,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:46:36,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:46:36,974 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:36,974 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:36,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:46:36,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:46:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:37,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:46:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:37,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258437085] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:46:37,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 08:46:37,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-08 08:46:37,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420383245] [2025-02-08 08:46:37,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 08:46:37,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 08:46:37,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:46:37,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 08:46:37,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 08:46:37,107 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-08 08:46:37,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 127 flow. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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 08:46:37,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:37,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-08 08:46:37,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:37,299 INFO L124 PetriNetUnfolderBase]: 160/325 cut-off events. [2025-02-08 08:46:37,300 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2025-02-08 08:46:37,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 325 events. 160/325 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1245 event pairs, 40 based on Foata normal form. 5/308 useless extension candidates. Maximal degree in co-relation 492. Up to 91 conditions per place. [2025-02-08 08:46:37,303 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 44 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2025-02-08 08:46:37,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 320 flow [2025-02-08 08:46:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:46:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:46:37,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2025-02-08 08:46:37,304 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44396551724137934 [2025-02-08 08:46:37,304 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 127 flow. Second operand 8 states and 103 transitions. [2025-02-08 08:46:37,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 320 flow [2025-02-08 08:46:37,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:46:37,308 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 184 flow [2025-02-08 08:46:37,308 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=184, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2025-02-08 08:46:37,309 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2025-02-08 08:46:37,309 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 184 flow [2025-02-08 08:46:37,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 10 states have internal predecessors, (78), 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 08:46:37,309 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:37,309 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:37,318 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 08:46:37,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:37,511 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:37,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1968775447, now seen corresponding path program 2 times [2025-02-08 08:46:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:46:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032538821] [2025-02-08 08:46:37,512 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:46:37,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:46:37,518 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:46:37,527 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:46:37,527 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:46:37,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:37,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 08:46:37,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032538821] [2025-02-08 08:46:37,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032538821] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 08:46:37,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066797252] [2025-02-08 08:46:37,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:46:37,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:37,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:37,603 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 08:46:37,605 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 08:46:37,643 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:46:37,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:46:37,655 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:46:37,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:37,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:46:37,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:46:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:37,699 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:46:37,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066797252] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:46:37,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 08:46:37,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-02-08 08:46:37,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593730769] [2025-02-08 08:46:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:46:37,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 08:46:37,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 08:46:37,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 08:46:37,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-08 08:46:37,701 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:46:37,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 184 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:46:37,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:37,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:46:37,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:37,833 INFO L124 PetriNetUnfolderBase]: 168/400 cut-off events. [2025-02-08 08:46:37,834 INFO L125 PetriNetUnfolderBase]: For 580/580 co-relation queries the response was YES. [2025-02-08 08:46:37,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 400 events. 168/400 cut-off events. For 580/580 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1933 event pairs, 55 based on Foata normal form. 5/390 useless extension candidates. Maximal degree in co-relation 1058. Up to 123 conditions per place. [2025-02-08 08:46:37,838 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 49 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2025-02-08 08:46:37,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 415 flow [2025-02-08 08:46:37,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 08:46:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 08:46:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2025-02-08 08:46:37,855 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2025-02-08 08:46:37,855 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 184 flow. Second operand 7 states and 98 transitions. [2025-02-08 08:46:37,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 415 flow [2025-02-08 08:46:37,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 391 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-08 08:46:37,863 INFO L231 Difference]: Finished difference. Result has 53 places, 36 transitions, 221 flow [2025-02-08 08:46:37,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=53, PETRI_TRANSITIONS=36} [2025-02-08 08:46:37,867 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2025-02-08 08:46:37,867 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 36 transitions, 221 flow [2025-02-08 08:46:37,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 08:46:37,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:37,867 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:37,882 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 08:46:38,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:38,068 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:38,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:38,070 INFO L85 PathProgramCache]: Analyzing trace with hash -422478617, now seen corresponding path program 1 times [2025-02-08 08:46:38,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 08:46:38,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172816546] [2025-02-08 08:46:38,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:38,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 08:46:38,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:46:38,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:46:38,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:38,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:46:38,080 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:46:38,081 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:46:38,088 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:46:38,088 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:38,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:46:38,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 08:46:38,102 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:46:38,103 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-02-08 08:46:38,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-08 08:46:38,104 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-08 08:46:38,105 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-02-08 08:46:38,106 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-02-08 08:46:38,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 08:46:38,106 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-02-08 08:46:38,129 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:46:38,129 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:46:38,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:46:38 BasicIcfg [2025-02-08 08:46:38,135 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:46:38,136 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:46:38,136 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:46:38,136 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:46:38,137 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:46:35" (3/4) ... [2025-02-08 08:46:38,138 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:46:38,138 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:46:38,139 INFO L158 Benchmark]: Toolchain (without parser) took 3345.66ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 102.1MB in the end (delta: 10.4MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2025-02-08 08:46:38,139 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:46:38,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.51ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 92.7MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:46:38,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.33ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:46:38,140 INFO L158 Benchmark]: Boogie Preprocessor took 28.83ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:46:38,140 INFO L158 Benchmark]: IcfgBuilder took 331.71ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 70.5MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 08:46:38,140 INFO L158 Benchmark]: TraceAbstraction took 2576.31ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 102.9MB in the end (delta: -33.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:46:38,140 INFO L158 Benchmark]: Witness Printer took 2.84ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 102.1MB in the end (delta: 21.0kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:46:38,142 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 124.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 366.51ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 92.7MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.33ms. Allocated memory is still 142.6MB. Free memory was 92.7MB in the beginning and 91.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.83ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 89.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 331.71ms. Allocated memory is still 142.6MB. Free memory was 89.7MB in the beginning and 70.5MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2576.31ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 102.9MB in the end (delta: -33.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.84ms. Allocated memory is still 142.6MB. Free memory was 102.1MB in the beginning and 102.1MB in the end (delta: 21.0kB). Peak memory consumption was 8.4MB. 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; [L772] 0 _N = 1 [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=1, limit=0, t1=-1] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=0, t1=-1, t2=0] [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, limit=2] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] [L752] 2 __assert_fail ("0", "generated/unwind1.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] - UnprovableResult [Line: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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. - UnprovableResult [Line: 776]: 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, 43 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 387 IncrementalHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 387 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 SizeOfPredicates, 6 NumberOfNonLiveVariables, 240 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/11 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 08:46:38,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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/unwind1-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 08:46:40,093 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 08:46:40,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-02-08 08:46:40,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 08:46:40,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 08:46:40,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 08:46:40,192 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 08:46:40,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 08:46:40,193 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 08:46:40,193 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 08:46:40,193 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 08:46:40,193 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 08:46:40,193 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 08:46:40,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 08:46:40,194 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 08:46:40,194 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 08:46:40,195 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:46:40,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 08:46:40,195 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 08:46:40,196 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 08:46:40,196 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 08:46:40,196 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 -> 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e [2025-02-08 08:46:40,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 08:46:40,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 08:46:40,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 08:46:40,483 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 08:46:40,483 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 08:46:40,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-02-08 08:46:41,666 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5a82ffe54/85d2496682ed47cd8adab6c6078d6f9d/FLAG43a9a1ea7 [2025-02-08 08:46:41,955 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 08:46:41,958 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-02-08 08:46:41,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5a82ffe54/85d2496682ed47cd8adab6c6078d6f9d/FLAG43a9a1ea7 [2025-02-08 08:46:42,262 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/5a82ffe54/85d2496682ed47cd8adab6c6078d6f9d [2025-02-08 08:46:42,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 08:46:42,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 08:46:42,268 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 08:46:42,268 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 08:46:42,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 08:46:42,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fa770d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42, skipping insertion in model container [2025-02-08 08:46:42,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,290 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 08:46:42,491 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:46:42,502 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 08:46:42,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 08:46:42,567 INFO L204 MainTranslator]: Completed translation [2025-02-08 08:46:42,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42 WrapperNode [2025-02-08 08:46:42,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 08:46:42,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 08:46:42,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 08:46:42,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 08:46:42,573 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,588 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,604 INFO L138 Inliner]: procedures = 170, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 54 [2025-02-08 08:46:42,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 08:46:42,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 08:46:42,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 08:46:42,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 08:46:42,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,629 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 08:46:42,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,633 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,633 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 08:46:42,640 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 08:46:42,643 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 08:46:42,643 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 08:46:42,644 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (1/1) ... [2025-02-08 08:46:42,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 08:46:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:42,675 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 08:46:42,678 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 08:46:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 08:46:42,701 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-02-08 08:46:42,701 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-02-08 08:46:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-08 08:46:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-08 08:46:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-02-08 08:46:42,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 08:46:42,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 08:46:42,703 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 08:46:42,824 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 08:46:42,826 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 08:46:42,992 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 08:46:42,993 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 08:46:43,108 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 08:46:43,109 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 08:46:43,109 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:46:43 BoogieIcfgContainer [2025-02-08 08:46:43,109 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 08:46:43,112 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 08:46:43,112 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 08:46:43,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 08:46:43,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 08:46:42" (1/3) ... [2025-02-08 08:46:43,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d612cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:46:43, skipping insertion in model container [2025-02-08 08:46:43,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 08:46:42" (2/3) ... [2025-02-08 08:46:43,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d612cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 08:46:43, skipping insertion in model container [2025-02-08 08:46:43,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:46:43" (3/3) ... [2025-02-08 08:46:43,121 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2025-02-08 08:46:43,132 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 08:46:43,133 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-1.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 2 error locations. [2025-02-08 08:46:43,133 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 08:46:43,170 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-02-08 08:46:43,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2025-02-08 08:46:43,223 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2025-02-08 08:46:43,228 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 08:46:43,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-02-08 08:46:43,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2025-02-08 08:46:43,236 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2025-02-08 08:46:43,243 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 08:46:43,254 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;@606527fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 08:46:43,254 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-08 08:46:43,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 08:46:43,264 INFO L124 PetriNetUnfolderBase]: 4/21 cut-off events. [2025-02-08 08:46:43,264 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-08 08:46:43,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:43,265 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:43,265 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:43,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2061330347, now seen corresponding path program 1 times [2025-02-08 08:46:43,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:46:43,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494766409] [2025-02-08 08:46:43,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:43,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:43,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:43,292 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 08:46:43,293 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 08:46:43,366 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 08:46:43,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 08:46:43,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:43,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:43,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:46:43,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:46:43,451 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 08:46:43,452 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:46:43,452 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:46:43,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494766409] [2025-02-08 08:46:43,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494766409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:46:43,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:46:43,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 08:46:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470405485] [2025-02-08 08:46:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:46:43,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 08:46:43,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:46:43,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 08:46:43,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 08:46:43,488 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:46:43,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 08:46:43,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:43,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:46:43,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:43,670 INFO L124 PetriNetUnfolderBase]: 165/337 cut-off events. [2025-02-08 08:46:43,670 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-02-08 08:46:43,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 337 events. 165/337 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1377 event pairs, 83 based on Foata normal form. 39/332 useless extension candidates. Maximal degree in co-relation 588. Up to 187 conditions per place. [2025-02-08 08:46:43,674 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 33 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2025-02-08 08:46:43,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 183 flow [2025-02-08 08:46:43,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:46:43,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:46:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2025-02-08 08:46:43,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5241379310344828 [2025-02-08 08:46:43,684 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 5 states and 76 transitions. [2025-02-08 08:46:43,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 183 flow [2025-02-08 08:46:43,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 169 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-08 08:46:43,691 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 80 flow [2025-02-08 08:46:43,692 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2025-02-08 08:46:43,696 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2025-02-08 08:46:43,697 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 80 flow [2025-02-08 08:46:43,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 08:46:43,697 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:43,697 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:43,704 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 08:46:43,901 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 08:46:43,901 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:43,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash -524254582, now seen corresponding path program 1 times [2025-02-08 08:46:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:46:43,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1436972038] [2025-02-08 08:46:43,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:43,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:43,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:43,906 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 08:46:43,908 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 08:46:43,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 08:46:43,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 08:46:43,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:43,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:43,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 08:46:43,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:46:43,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:43,988 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 08:46:43,988 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:46:43,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436972038] [2025-02-08 08:46:43,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436972038] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 08:46:43,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 08:46:43,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 08:46:43,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749189433] [2025-02-08 08:46:43,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 08:46:43,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 08:46:43,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:46:43,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 08:46:43,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 08:46:43,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:46:43,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 08:46:43,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:43,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:46:43,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:44,109 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2025-02-08 08:46:44,109 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2025-02-08 08:46:44,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589 conditions, 247 events. 111/247 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 939 event pairs, 30 based on Foata normal form. 13/245 useless extension candidates. Maximal degree in co-relation 260. Up to 97 conditions per place. [2025-02-08 08:46:44,111 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 33 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2025-02-08 08:46:44,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 44 transitions, 216 flow [2025-02-08 08:46:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 08:46:44,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 08:46:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 73 transitions. [2025-02-08 08:46:44,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2025-02-08 08:46:44,112 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 80 flow. Second operand 5 states and 73 transitions. [2025-02-08 08:46:44,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 44 transitions, 216 flow [2025-02-08 08:46:44,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-08 08:46:44,119 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 111 flow [2025-02-08 08:46:44,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-02-08 08:46:44,119 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2025-02-08 08:46:44,119 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 111 flow [2025-02-08 08:46:44,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 08:46:44,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:44,119 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:44,127 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 08:46:44,320 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 08:46:44,320 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:44,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash -2003139732, now seen corresponding path program 1 times [2025-02-08 08:46:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:46:44,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829504725] [2025-02-08 08:46:44,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:44,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:44,323 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 08:46:44,324 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 08:46:44,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 08:46:44,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 08:46:44,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:44,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:44,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 08:46:44,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:46:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:44,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:46:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:44,501 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:46:44,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829504725] [2025-02-08 08:46:44,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829504725] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:46:44,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:46:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-02-08 08:46:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474079645] [2025-02-08 08:46:44,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:46:44,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 08:46:44,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:46:44,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 08:46:44,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-08 08:46:44,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2025-02-08 08:46:44,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 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 08:46:44,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:44,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2025-02-08 08:46:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:44,746 INFO L124 PetriNetUnfolderBase]: 160/325 cut-off events. [2025-02-08 08:46:44,746 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2025-02-08 08:46:44,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 325 events. 160/325 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1248 event pairs, 40 based on Foata normal form. 5/308 useless extension candidates. Maximal degree in co-relation 428. Up to 91 conditions per place. [2025-02-08 08:46:44,748 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 44 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2025-02-08 08:46:44,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 302 flow [2025-02-08 08:46:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 08:46:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-02-08 08:46:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2025-02-08 08:46:44,755 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44396551724137934 [2025-02-08 08:46:44,755 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 111 flow. Second operand 8 states and 103 transitions. [2025-02-08 08:46:44,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 302 flow [2025-02-08 08:46:44,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 59 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 08:46:44,757 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 164 flow [2025-02-08 08:46:44,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2025-02-08 08:46:44,758 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2025-02-08 08:46:44,758 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 164 flow [2025-02-08 08:46:44,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 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 08:46:44,758 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:44,758 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:44,765 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 08:46:44,963 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 08:46:44,963 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:44,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1968775447, now seen corresponding path program 2 times [2025-02-08 08:46:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:46:44,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097136291] [2025-02-08 08:46:44,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 08:46:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:44,966 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 08:46:44,967 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 08:46:45,009 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 08:46:45,019 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:46:45,019 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 08:46:45,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 08:46:45,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 08:46:45,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 08:46:45,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:45,085 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 08:46:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 08:46:45,157 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-02-08 08:46:45,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097136291] [2025-02-08 08:46:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097136291] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 08:46:45,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-08 08:46:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2025-02-08 08:46:45,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736010181] [2025-02-08 08:46:45,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-08 08:46:45,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 08:46:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-02-08 08:46:45,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 08:46:45,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 08:46:45,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2025-02-08 08:46:45,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 164 flow. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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 08:46:45,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 08:46:45,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2025-02-08 08:46:45,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 08:46:45,531 INFO L124 PetriNetUnfolderBase]: 158/373 cut-off events. [2025-02-08 08:46:45,531 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2025-02-08 08:46:45,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 373 events. 158/373 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1751 event pairs, 18 based on Foata normal form. 10/368 useless extension candidates. Maximal degree in co-relation 937. Up to 73 conditions per place. [2025-02-08 08:46:45,534 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 63 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2025-02-08 08:46:45,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 511 flow [2025-02-08 08:46:45,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 08:46:45,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-02-08 08:46:45,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 173 transitions. [2025-02-08 08:46:45,535 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42610837438423643 [2025-02-08 08:46:45,535 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 164 flow. Second operand 14 states and 173 transitions. [2025-02-08 08:46:45,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 511 flow [2025-02-08 08:46:45,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 85 transitions, 477 flow, removed 6 selfloop flow, removed 3 redundant places. [2025-02-08 08:46:45,539 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 251 flow [2025-02-08 08:46:45,539 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=251, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2025-02-08 08:46:45,540 INFO L279 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2025-02-08 08:46:45,540 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 251 flow [2025-02-08 08:46:45,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 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 08:46:45,540 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 08:46:45,540 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 08:46:45,548 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 08:46:45,745 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 08:46:45,745 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-08 08:46:45,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 08:46:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash -422478617, now seen corresponding path program 1 times [2025-02-08 08:46:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-02-08 08:46:45,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610547232] [2025-02-08 08:46:45,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 08:46:45,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:45,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 08:46:45,748 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 08:46:45,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-08 08:46:45,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:46:45,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:46:45,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:45,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:46:45,801 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 08:46:45,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 08:46:45,815 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 08:46:45,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 08:46:45,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 08:46:45,833 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-02-08 08:46:45,833 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 08:46:45,834 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2025-02-08 08:46:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2025-02-08 08:46:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-02-08 08:46:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-02-08 08:46:45,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2025-02-08 08:46:45,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-08 08:46:46,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 08:46:46,036 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-02-08 08:46:46,059 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 08:46:46,059 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 08:46:46,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 08:46:46 BasicIcfg [2025-02-08 08:46:46,070 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 08:46:46,071 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 08:46:46,071 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 08:46:46,071 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 08:46:46,071 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 08:46:43" (3/4) ... [2025-02-08 08:46:46,072 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 08:46:46,073 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 08:46:46,077 INFO L158 Benchmark]: Toolchain (without parser) took 3806.83ms. Allocated memory is still 100.7MB. Free memory was 74.3MB in the beginning and 58.0MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2025-02-08 08:46:46,077 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 46.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:46:46,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.93ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 53.8MB in the end (delta: 20.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:46:46,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.77ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 52.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 08:46:46,077 INFO L158 Benchmark]: Boogie Preprocessor took 34.32ms. Allocated memory is still 100.7MB. Free memory was 52.0MB in the beginning and 50.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:46:46,077 INFO L158 Benchmark]: IcfgBuilder took 469.24ms. Allocated memory is still 100.7MB. Free memory was 50.3MB in the beginning and 63.0MB in the end (delta: -12.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2025-02-08 08:46:46,077 INFO L158 Benchmark]: TraceAbstraction took 2958.25ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 58.0MB in the end (delta: 4.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2025-02-08 08:46:46,078 INFO L158 Benchmark]: Witness Printer took 2.31ms. Allocated memory is still 100.7MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 23.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 08:46:46,079 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 46.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.93ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 53.8MB in the end (delta: 20.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.77ms. Allocated memory is still 100.7MB. Free memory was 53.8MB in the beginning and 52.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.32ms. Allocated memory is still 100.7MB. Free memory was 52.0MB in the beginning and 50.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 469.24ms. Allocated memory is still 100.7MB. Free memory was 50.3MB in the beginning and 63.0MB in the end (delta: -12.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2958.25ms. Allocated memory is still 100.7MB. Free memory was 62.6MB in the beginning and 58.0MB in the end (delta: 4.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Witness Printer took 2.31ms. Allocated memory is still 100.7MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 23.2kB). 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; [L772] 0 _N = 1 [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=1, limit=0, t1=-1] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=0, t1=-1, t2=0] [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, limit=2] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression [L753] CALL 2 reach_error() [L752] COND FALSE 2 !(0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] [L752] 2 __assert_fail ("0", "generated/unwind1.h", 11, __extension__ __PRETTY_FUNCTION__) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] - UnprovableResult [Line: 771]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed 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. - UnprovableResult [Line: 776]: 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, 43 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 195 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 192 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 596 IncrementalHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 596 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 9 NumberOfNonLiveVariables, 176 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 5/9 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-02-08 08:46:46,094 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